Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* opncls.c -- open and close a BFD. |
2571583a | 2 | Copyright (C) 1990-2017 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Written by Cygnus Support. | |
5 | ||
c4f3d130 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
c4f3d130 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c4f3d130 | 11 | (at your option) any later version. |
252b5132 | 12 | |
c4f3d130 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
c4f3d130 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "objalloc.h" |
26 | #include "libbfd.h" | |
31f7ba04 | 27 | #include "libiberty.h" |
2425a30e | 28 | #include "elf-bfd.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 | ||
fc1cfaa5 | 40 | /* Counters used to initialize the bfd identifier. */ |
52b69c9e | 41 | |
fc1cfaa5 AM |
42 | static unsigned int bfd_id_counter = 0; |
43 | static unsigned int bfd_reserved_id_counter = 0; | |
44 | ||
45 | /* | |
46 | CODE_FRAGMENT | |
47 | .{* Set to N to open the next N BFDs using an alternate id space. *} | |
48 | .extern unsigned int bfd_use_reserved_id; | |
49 | */ | |
50 | unsigned int bfd_use_reserved_id = 0; | |
52b69c9e | 51 | |
252b5132 RH |
52 | /* fdopen is a loser -- we should use stdio exclusively. Unfortunately |
53 | if we do that we can't use fcntl. */ | |
54 | ||
252b5132 RH |
55 | /* Return a new BFD. All BFD's are allocated through this routine. */ |
56 | ||
57 | bfd * | |
c58b9523 | 58 | _bfd_new_bfd (void) |
252b5132 RH |
59 | { |
60 | bfd *nbfd; | |
61 | ||
a50b1753 | 62 | nbfd = (bfd *) bfd_zmalloc (sizeof (bfd)); |
252b5132 RH |
63 | if (nbfd == NULL) |
64 | return NULL; | |
65 | ||
fc1cfaa5 AM |
66 | if (bfd_use_reserved_id) |
67 | { | |
68 | nbfd->id = --bfd_reserved_id_counter; | |
69 | --bfd_use_reserved_id; | |
70 | } | |
71 | else | |
72 | nbfd->id = bfd_id_counter++; | |
52b69c9e | 73 | |
c58b9523 | 74 | nbfd->memory = objalloc_create (); |
252b5132 RH |
75 | if (nbfd->memory == NULL) |
76 | { | |
77 | bfd_set_error (bfd_error_no_memory); | |
73e87d70 | 78 | free (nbfd); |
252b5132 RH |
79 | return NULL; |
80 | } | |
81 | ||
82 | nbfd->arch_info = &bfd_default_arch_struct; | |
83 | ||
28d39d1a | 84 | if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc, |
c9ba0c87 | 85 | sizeof (struct section_hash_entry), 13)) |
73e87d70 AM |
86 | { |
87 | free (nbfd); | |
88 | return NULL; | |
89 | } | |
252b5132 RH |
90 | |
91 | return nbfd; | |
92 | } | |
93 | ||
b374d0f8 AM |
94 | static const struct bfd_iovec opncls_iovec; |
95 | ||
252b5132 RH |
96 | /* Allocate a new BFD as a member of archive OBFD. */ |
97 | ||
98 | bfd * | |
c58b9523 | 99 | _bfd_new_bfd_contained_in (bfd *obfd) |
252b5132 RH |
100 | { |
101 | bfd *nbfd; | |
102 | ||
103 | nbfd = _bfd_new_bfd (); | |
301e3139 AM |
104 | if (nbfd == NULL) |
105 | return NULL; | |
252b5132 | 106 | nbfd->xvec = obfd->xvec; |
40838a72 | 107 | nbfd->iovec = obfd->iovec; |
b374d0f8 AM |
108 | if (obfd->iovec == &opncls_iovec) |
109 | nbfd->iostream = obfd->iostream; | |
252b5132 RH |
110 | nbfd->my_archive = obfd; |
111 | nbfd->direction = read_direction; | |
112 | nbfd->target_defaulted = obfd->target_defaulted; | |
ce875075 AM |
113 | nbfd->lto_output = obfd->lto_output; |
114 | nbfd->no_export = obfd->no_export; | |
252b5132 RH |
115 | return nbfd; |
116 | } | |
117 | ||
73e87d70 AM |
118 | /* Delete a BFD. */ |
119 | ||
7b84f8da | 120 | static void |
c58b9523 | 121 | _bfd_delete_bfd (bfd *abfd) |
73e87d70 | 122 | { |
b25e3d87 L |
123 | if (abfd->memory) |
124 | { | |
125 | bfd_hash_table_free (&abfd->section_htab); | |
126 | objalloc_free ((struct objalloc *) abfd->memory); | |
127 | } | |
a988325c | 128 | |
1be5090b NC |
129 | if (abfd->filename) |
130 | free ((char *) abfd->filename); | |
06e7acd7 | 131 | free (abfd->arelt_data); |
73e87d70 AM |
132 | free (abfd); |
133 | } | |
134 | ||
b25e3d87 L |
135 | /* Free objalloc memory. */ |
136 | ||
137 | bfd_boolean | |
138 | _bfd_free_cached_info (bfd *abfd) | |
139 | { | |
140 | if (abfd->memory) | |
141 | { | |
142 | bfd_hash_table_free (&abfd->section_htab); | |
143 | objalloc_free ((struct objalloc *) abfd->memory); | |
144 | ||
145 | abfd->sections = NULL; | |
146 | abfd->section_last = NULL; | |
147 | abfd->outsymbols = NULL; | |
148 | abfd->tdata.any = NULL; | |
149 | abfd->usrdata = NULL; | |
150 | abfd->memory = NULL; | |
151 | } | |
152 | ||
153 | return TRUE; | |
154 | } | |
155 | ||
252b5132 RH |
156 | /* |
157 | SECTION | |
158 | Opening and closing BFDs | |
159 | ||
1b74d094 BW |
160 | SUBSECTION |
161 | Functions for opening and closing | |
252b5132 RH |
162 | */ |
163 | ||
164 | /* | |
165 | FUNCTION | |
2d0123b7 | 166 | bfd_fopen |
252b5132 RH |
167 | |
168 | SYNOPSIS | |
2d0123b7 | 169 | bfd *bfd_fopen (const char *filename, const char *target, |
07d6d2b8 | 170 | const char *mode, int fd); |
252b5132 RH |
171 | |
172 | DESCRIPTION | |
2d0123b7 MM |
173 | Open the file @var{filename} with the target @var{target}. |
174 | Return a pointer to the created BFD. If @var{fd} is not -1, | |
175 | then <<fdopen>> is used to open the file; otherwise, <<fopen>> | |
176 | is used. @var{mode} is passed directly to <<fopen>> or | |
68ffbac6 | 177 | <<fdopen>>. |
252b5132 RH |
178 | |
179 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
180 | that function. | |
181 | ||
a366f4ff MM |
182 | The new BFD is marked as cacheable iff @var{fd} is -1. |
183 | ||
252b5132 | 184 | If <<NULL>> is returned then an error has occured. Possible errors |
7c4a37eb AM |
185 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
186 | <<system_call>> error. | |
6f0c7050 TT |
187 | |
188 | On error, @var{fd} is always closed. | |
1be5090b NC |
189 | |
190 | A copy of the @var{filename} argument is stored in the newly created | |
191 | BFD. It can be accessed via the bfd_get_filename() macro. | |
252b5132 RH |
192 | */ |
193 | ||
194 | bfd * | |
2d0123b7 | 195 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
196 | { |
197 | bfd *nbfd; | |
198 | const bfd_target *target_vec; | |
199 | ||
200 | nbfd = _bfd_new_bfd (); | |
201 | if (nbfd == NULL) | |
6f0c7050 TT |
202 | { |
203 | if (fd != -1) | |
204 | close (fd); | |
205 | return NULL; | |
206 | } | |
252b5132 RH |
207 | |
208 | target_vec = bfd_find_target (target, nbfd); | |
209 | if (target_vec == NULL) | |
210 | { | |
6f0c7050 TT |
211 | if (fd != -1) |
212 | close (fd); | |
73e87d70 | 213 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
214 | return NULL; |
215 | } | |
68ffbac6 | 216 | |
2d0123b7 MM |
217 | #ifdef HAVE_FDOPEN |
218 | if (fd != -1) | |
219 | nbfd->iostream = fdopen (fd, mode); | |
220 | else | |
221 | #endif | |
c7c3d11b | 222 | nbfd->iostream = _bfd_real_fopen (filename, mode); |
2d0123b7 MM |
223 | if (nbfd->iostream == NULL) |
224 | { | |
92a7c1b8 | 225 | bfd_set_error (bfd_error_system_call); |
2d0123b7 MM |
226 | _bfd_delete_bfd (nbfd); |
227 | return NULL; | |
228 | } | |
252b5132 | 229 | |
2d0123b7 | 230 | /* OK, put everything where it belongs. */ |
1be5090b NC |
231 | |
232 | /* PR 11983: Do not cache the original filename, but | |
233 | rather make a copy - the original might go away. */ | |
234 | nbfd->filename = xstrdup (filename); | |
252b5132 | 235 | |
2d0123b7 MM |
236 | /* Figure out whether the user is opening the file for reading, |
237 | writing, or both, by looking at the MODE argument. */ | |
68ffbac6 | 238 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') |
2d0123b7 MM |
239 | && mode[1] == '+') |
240 | nbfd->direction = both_direction; | |
241 | else if (mode[0] == 'r') | |
242 | nbfd->direction = read_direction; | |
243 | else | |
244 | nbfd->direction = write_direction; | |
245 | ||
246 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 247 | { |
73e87d70 | 248 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
249 | return NULL; |
250 | } | |
2d0123b7 | 251 | nbfd->opened_once = TRUE; |
a253d456 | 252 | |
a366f4ff MM |
253 | /* If we opened the file by name, mark it cacheable; we can close it |
254 | and reopen it later. However, if a file descriptor was provided, | |
255 | then it may have been opened with special flags that make it | |
256 | unsafe to close and reopen the file. */ | |
257 | if (fd == -1) | |
a253d456 | 258 | (void) bfd_set_cacheable (nbfd, TRUE); |
252b5132 RH |
259 | |
260 | return nbfd; | |
261 | } | |
262 | ||
2d0123b7 MM |
263 | /* |
264 | FUNCTION | |
265 | bfd_openr | |
266 | ||
267 | SYNOPSIS | |
268 | bfd *bfd_openr (const char *filename, const char *target); | |
269 | ||
270 | DESCRIPTION | |
271 | Open the file @var{filename} (using <<fopen>>) with the target | |
272 | @var{target}. Return a pointer to the created BFD. | |
273 | ||
274 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
275 | that function. | |
276 | ||
277 | If <<NULL>> is returned then an error has occured. Possible errors | |
278 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
279 | <<system_call>> error. | |
1be5090b NC |
280 | |
281 | A copy of the @var{filename} argument is stored in the newly created | |
282 | BFD. It can be accessed via the bfd_get_filename() macro. | |
2d0123b7 MM |
283 | */ |
284 | ||
285 | bfd * | |
286 | bfd_openr (const char *filename, const char *target) | |
287 | { | |
288 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
289 | } | |
290 | ||
252b5132 RH |
291 | /* Don't try to `optimize' this function: |
292 | ||
293 | o - We lock using stack space so that interrupting the locking | |
294 | won't cause a storage leak. | |
295 | o - We open the file stream last, since we don't want to have to | |
296 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 297 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
298 | /* |
299 | FUNCTION | |
7c4a37eb | 300 | bfd_fdopenr |
252b5132 RH |
301 | |
302 | SYNOPSIS | |
c58b9523 | 303 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
304 | |
305 | DESCRIPTION | |
7c4a37eb AM |
306 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
307 | <<fopen>>. It opens a BFD on a file already described by the | |
308 | @var{fd} supplied. | |
309 | ||
310 | When the file is later <<bfd_close>>d, the file descriptor will | |
311 | be closed. If the caller desires that this file descriptor be | |
312 | cached by BFD (opened as needed, closed as needed to free | |
313 | descriptors for other opens), with the supplied @var{fd} used as | |
314 | an initial file descriptor (but subject to closure at any time), | |
315 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 316 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
317 | until <<bfd_close>>, and will not be affected by BFD operations |
318 | on other files. | |
319 | ||
320 | Possible errors are <<bfd_error_no_memory>>, | |
321 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
6f0c7050 TT |
322 | |
323 | On error, @var{fd} is closed. | |
1be5090b NC |
324 | |
325 | A copy of the @var{filename} argument is stored in the newly created | |
326 | BFD. It can be accessed via the bfd_get_filename() macro. | |
252b5132 RH |
327 | */ |
328 | ||
329 | bfd * | |
c58b9523 | 330 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 331 | { |
2d0123b7 MM |
332 | const char *mode; |
333 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 334 | int fdflags; |
2d0123b7 | 335 | #endif |
252b5132 | 336 | |
252b5132 | 337 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) |
2d0123b7 | 338 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
339 | #else |
340 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 | 341 | if (fdflags == -1) |
d83747fa | 342 | { |
6f0c7050 TT |
343 | int save = errno; |
344 | ||
345 | close (fd); | |
346 | errno = save; | |
d83747fa AM |
347 | bfd_set_error (bfd_error_system_call); |
348 | return NULL; | |
349 | } | |
252b5132 | 350 | |
c4f3d130 | 351 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
352 | switch (fdflags & (O_ACCMODE)) |
353 | { | |
dfab97d6 MM |
354 | case O_RDONLY: mode = FOPEN_RB; break; |
355 | case O_WRONLY: mode = FOPEN_RUB; break; | |
356 | case O_RDWR: mode = FOPEN_RUB; break; | |
252b5132 RH |
357 | default: abort (); |
358 | } | |
359 | #endif | |
360 | ||
2d0123b7 | 361 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
362 | } |
363 | ||
364 | /* | |
365 | FUNCTION | |
366 | bfd_openstreamr | |
367 | ||
368 | SYNOPSIS | |
49f4617b | 369 | bfd *bfd_openstreamr (const char * filename, const char * target, |
07d6d2b8 | 370 | void * stream); |
252b5132 RH |
371 | |
372 | DESCRIPTION | |
252b5132 RH |
373 | Open a BFD for read access on an existing stdio stream. When |
374 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
1be5090b NC |
375 | |
376 | A copy of the @var{filename} argument is stored in the newly created | |
377 | BFD. It can be accessed via the bfd_get_filename() macro. | |
252b5132 RH |
378 | */ |
379 | ||
380 | bfd * | |
c58b9523 | 381 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 382 | { |
a50b1753 | 383 | FILE *stream = (FILE *) streamarg; |
252b5132 RH |
384 | bfd *nbfd; |
385 | const bfd_target *target_vec; | |
386 | ||
387 | nbfd = _bfd_new_bfd (); | |
388 | if (nbfd == NULL) | |
389 | return NULL; | |
390 | ||
391 | target_vec = bfd_find_target (target, nbfd); | |
392 | if (target_vec == NULL) | |
393 | { | |
73e87d70 | 394 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
395 | return NULL; |
396 | } | |
397 | ||
c58b9523 | 398 | nbfd->iostream = stream; |
1be5090b NC |
399 | /* PR 11983: Do not cache the original filename, but |
400 | rather make a copy - the original might go away. */ | |
401 | nbfd->filename = xstrdup (filename); | |
252b5132 | 402 | nbfd->direction = read_direction; |
dc810e39 | 403 | |
252b5132 RH |
404 | if (! bfd_cache_init (nbfd)) |
405 | { | |
73e87d70 | 406 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
407 | return NULL; |
408 | } | |
409 | ||
410 | return nbfd; | |
411 | } | |
40838a72 AC |
412 | |
413 | /* | |
414 | FUNCTION | |
415 | bfd_openr_iovec | |
416 | ||
417 | SYNOPSIS | |
07d6d2b8 AM |
418 | bfd *bfd_openr_iovec (const char *filename, const char *target, |
419 | void *(*open_func) (struct bfd *nbfd, | |
420 | void *open_closure), | |
421 | void *open_closure, | |
422 | file_ptr (*pread_func) (struct bfd *nbfd, | |
423 | void *stream, | |
424 | void *buf, | |
425 | file_ptr nbytes, | |
426 | file_ptr offset), | |
427 | int (*close_func) (struct bfd *nbfd, | |
428 | void *stream), | |
e7f8eadb | 429 | int (*stat_func) (struct bfd *abfd, |
07d6d2b8 AM |
430 | void *stream, |
431 | struct stat *sb)); | |
40838a72 AC |
432 | |
433 | DESCRIPTION | |
07d6d2b8 AM |
434 | Create and return a BFD backed by a read-only @var{stream}. |
435 | The @var{stream} is created using @var{open_func}, accessed using | |
436 | @var{pread_func} and destroyed using @var{close_func}. | |
40838a72 AC |
437 | |
438 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
439 | that function. | |
440 | ||
e7f8eadb | 441 | Calls @var{open_func} (which can call <<bfd_zalloc>> and |
40838a72 | 442 | <<bfd_get_filename>>) to obtain the read-only stream backing |
e7f8eadb | 443 | the BFD. @var{open_func} either succeeds returning the |
40838a72 AC |
444 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> |
445 | (setting <<bfd_error>>). | |
446 | ||
e7f8eadb | 447 | Calls @var{pread_func} to request @var{nbytes} of data from |
40838a72 | 448 | @var{stream} starting at @var{offset} (e.g., via a call to |
e7f8eadb | 449 | <<bfd_read>>). @var{pread_func} either succeeds returning the |
40838a72 AC |
450 | number of bytes read (which can be less than @var{nbytes} when |
451 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
452 | ||
e7f8eadb DK |
453 | Calls @var{close_func} when the BFD is later closed using |
454 | <<bfd_close>>. @var{close_func} either succeeds returning 0, or | |
40838a72 AC |
455 | fails returning -1 (setting <<bfd_error>>). |
456 | ||
e7f8eadb DK |
457 | Calls @var{stat_func} to fill in a stat structure for bfd_stat, |
458 | bfd_get_size, and bfd_get_mtime calls. @var{stat_func} returns 0 | |
f6cf9273 AM |
459 | on success, or returns -1 on failure (setting <<bfd_error>>). |
460 | ||
40838a72 AC |
461 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has |
462 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
463 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
464 | ||
1be5090b NC |
465 | A copy of the @var{filename} argument is stored in the newly created |
466 | BFD. It can be accessed via the bfd_get_filename() macro. | |
40838a72 AC |
467 | */ |
468 | ||
469 | struct opncls | |
470 | { | |
471 | void *stream; | |
472 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
473 | file_ptr nbytes, file_ptr offset); | |
474 | int (*close) (struct bfd *abfd, void *stream); | |
f6cf9273 | 475 | int (*stat) (struct bfd *abfd, void *stream, struct stat *sb); |
40838a72 AC |
476 | file_ptr where; |
477 | }; | |
478 | ||
479 | static file_ptr | |
480 | opncls_btell (struct bfd *abfd) | |
481 | { | |
a50b1753 | 482 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
483 | return vec->where; |
484 | } | |
485 | ||
486 | static int | |
487 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
488 | { | |
a50b1753 | 489 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
490 | switch (whence) |
491 | { | |
492 | case SEEK_SET: vec->where = offset; break; | |
493 | case SEEK_CUR: vec->where += offset; break; | |
494 | case SEEK_END: return -1; | |
495 | } | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static file_ptr | |
500 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
501 | { | |
a50b1753 | 502 | struct opncls *vec = (struct opncls *) abfd->iostream; |
0709bb22 | 503 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
49f4617b | 504 | |
40838a72 AC |
505 | if (nread < 0) |
506 | return nread; | |
507 | vec->where += nread; | |
508 | return nread; | |
509 | } | |
510 | ||
511 | static file_ptr | |
512 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
513 | const void *where ATTRIBUTE_UNUSED, | |
514 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
515 | { | |
516 | return -1; | |
517 | } | |
518 | ||
405bf443 | 519 | static int |
40838a72 AC |
520 | opncls_bclose (struct bfd *abfd) |
521 | { | |
a50b1753 | 522 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
523 | /* Since the VEC's memory is bound to the bfd deleting the bfd will |
524 | free it. */ | |
525 | int status = 0; | |
49f4617b | 526 | |
40838a72 | 527 | if (vec->close != NULL) |
0709bb22 | 528 | status = (vec->close) (abfd, vec->stream); |
40838a72 | 529 | abfd->iostream = NULL; |
405bf443 | 530 | return status; |
40838a72 AC |
531 | } |
532 | ||
533 | static int | |
534 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
535 | { | |
536 | return 0; | |
537 | } | |
538 | ||
539 | static int | |
f6cf9273 | 540 | opncls_bstat (struct bfd *abfd, struct stat *sb) |
40838a72 | 541 | { |
a50b1753 | 542 | struct opncls *vec = (struct opncls *) abfd->iostream; |
f6cf9273 | 543 | |
40838a72 | 544 | memset (sb, 0, sizeof (*sb)); |
f6cf9273 AM |
545 | if (vec->stat == NULL) |
546 | return 0; | |
547 | ||
548 | return (vec->stat) (abfd, vec->stream, sb); | |
40838a72 AC |
549 | } |
550 | ||
25b88f33 PP |
551 | static void * |
552 | opncls_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED, | |
553 | void *addr ATTRIBUTE_UNUSED, | |
554 | bfd_size_type len ATTRIBUTE_UNUSED, | |
555 | int prot ATTRIBUTE_UNUSED, | |
556 | int flags ATTRIBUTE_UNUSED, | |
4c95ab76 | 557 | file_ptr offset ATTRIBUTE_UNUSED, |
07d6d2b8 AM |
558 | void **map_addr ATTRIBUTE_UNUSED, |
559 | bfd_size_type *map_len ATTRIBUTE_UNUSED) | |
25b88f33 PP |
560 | { |
561 | return (void *) -1; | |
562 | } | |
563 | ||
49f4617b PA |
564 | static const struct bfd_iovec opncls_iovec = |
565 | { | |
40838a72 | 566 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, |
25b88f33 | 567 | &opncls_bclose, &opncls_bflush, &opncls_bstat, &opncls_bmmap |
40838a72 AC |
568 | }; |
569 | ||
570 | bfd * | |
571 | bfd_openr_iovec (const char *filename, const char *target, | |
662e4701 | 572 | void *(*open_p) (struct bfd *, void *), |
40838a72 | 573 | void *open_closure, |
662e4701 L |
574 | file_ptr (*pread_p) (struct bfd *, void *, void *, |
575 | file_ptr, file_ptr), | |
576 | int (*close_p) (struct bfd *, void *), | |
577 | int (*stat_p) (struct bfd *, void *, struct stat *)) | |
40838a72 AC |
578 | { |
579 | bfd *nbfd; | |
580 | const bfd_target *target_vec; | |
581 | struct opncls *vec; | |
582 | void *stream; | |
583 | ||
584 | nbfd = _bfd_new_bfd (); | |
585 | if (nbfd == NULL) | |
586 | return NULL; | |
587 | ||
588 | target_vec = bfd_find_target (target, nbfd); | |
589 | if (target_vec == NULL) | |
590 | { | |
591 | _bfd_delete_bfd (nbfd); | |
592 | return NULL; | |
593 | } | |
594 | ||
1be5090b NC |
595 | /* PR 11983: Do not cache the original filename, but |
596 | rather make a copy - the original might go away. */ | |
597 | nbfd->filename = xstrdup (filename); | |
40838a72 AC |
598 | nbfd->direction = read_direction; |
599 | ||
662e4701 L |
600 | /* `open_p (...)' would get expanded by an the open(2) syscall macro. */ |
601 | stream = (*open_p) (nbfd, open_closure); | |
40838a72 AC |
602 | if (stream == NULL) |
603 | { | |
604 | _bfd_delete_bfd (nbfd); | |
605 | return NULL; | |
606 | } | |
607 | ||
a50b1753 | 608 | vec = (struct opncls *) bfd_zalloc (nbfd, sizeof (struct opncls)); |
40838a72 | 609 | vec->stream = stream; |
662e4701 L |
610 | vec->pread = pread_p; |
611 | vec->close = close_p; | |
612 | vec->stat = stat_p; | |
40838a72 AC |
613 | |
614 | nbfd->iovec = &opncls_iovec; | |
615 | nbfd->iostream = vec; | |
616 | ||
617 | return nbfd; | |
618 | } | |
252b5132 | 619 | \f |
c4f3d130 NC |
620 | /* bfd_openw -- open for writing. |
621 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 622 | |
c4f3d130 | 623 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
624 | |
625 | /* | |
626 | FUNCTION | |
627 | bfd_openw | |
628 | ||
629 | SYNOPSIS | |
c58b9523 | 630 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
631 | |
632 | DESCRIPTION | |
633 | Create a BFD, associated with file @var{filename}, using the | |
634 | file format @var{target}, and return a pointer to it. | |
635 | ||
636 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
637 | <<bfd_error_invalid_target>>. | |
1be5090b NC |
638 | |
639 | A copy of the @var{filename} argument is stored in the newly created | |
640 | BFD. It can be accessed via the bfd_get_filename() macro. | |
252b5132 RH |
641 | */ |
642 | ||
643 | bfd * | |
c58b9523 | 644 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
645 | { |
646 | bfd *nbfd; | |
647 | const bfd_target *target_vec; | |
648 | ||
252b5132 | 649 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 650 | reclaim it correctly. */ |
252b5132 RH |
651 | nbfd = _bfd_new_bfd (); |
652 | if (nbfd == NULL) | |
653 | return NULL; | |
654 | ||
655 | target_vec = bfd_find_target (target, nbfd); | |
656 | if (target_vec == NULL) | |
657 | { | |
73e87d70 | 658 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
659 | return NULL; |
660 | } | |
661 | ||
1be5090b NC |
662 | /* PR 11983: Do not cache the original filename, but |
663 | rather make a copy - the original might go away. */ | |
664 | nbfd->filename = xstrdup (filename); | |
252b5132 RH |
665 | nbfd->direction = write_direction; |
666 | ||
667 | if (bfd_open_file (nbfd) == NULL) | |
668 | { | |
c4f3d130 NC |
669 | /* File not writeable, etc. */ |
670 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 671 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
672 | return NULL; |
673 | } | |
674 | ||
675 | return nbfd; | |
676 | } | |
677 | ||
8c7d38e8 NC |
678 | static inline void |
679 | _maybe_make_executable (bfd * abfd) | |
680 | { | |
681 | /* If the file was open for writing and is now executable, | |
682 | make it so. */ | |
683 | if (abfd->direction == write_direction | |
dbde1c12 | 684 | && (abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
8c7d38e8 NC |
685 | { |
686 | struct stat buf; | |
687 | ||
688 | if (stat (abfd->filename, &buf) == 0 | |
689 | /* Do not attempt to change non-regular files. This is | |
690 | here especially for configure scripts and kernel builds | |
691 | which run tests with "ld [...] -o /dev/null". */ | |
692 | && S_ISREG(buf.st_mode)) | |
693 | { | |
694 | unsigned int mask = umask (0); | |
695 | ||
696 | umask (mask); | |
697 | chmod (abfd->filename, | |
698 | (0777 | |
699 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
700 | } | |
701 | } | |
702 | } | |
703 | ||
252b5132 | 704 | /* |
252b5132 RH |
705 | FUNCTION |
706 | bfd_close | |
707 | ||
708 | SYNOPSIS | |
b34976b6 | 709 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
710 | |
711 | DESCRIPTION | |
7c4a37eb AM |
712 | Close a BFD. If the BFD was open for writing, then pending |
713 | operations are completed and the file written out and closed. | |
714 | If the created file is executable, then <<chmod>> is called | |
715 | to mark it as such. | |
252b5132 RH |
716 | |
717 | All memory attached to the BFD is released. | |
718 | ||
719 | The file descriptor associated with the BFD is closed (even | |
720 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
721 | ||
722 | RETURNS | |
b34976b6 | 723 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
724 | */ |
725 | ||
b34976b6 | 726 | bfd_boolean |
c58b9523 | 727 | bfd_close (bfd *abfd) |
252b5132 | 728 | { |
c4f3d130 | 729 | if (bfd_write_p (abfd)) |
252b5132 RH |
730 | { |
731 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 732 | return FALSE; |
252b5132 RH |
733 | } |
734 | ||
e234de6b | 735 | return bfd_close_all_done (abfd); |
252b5132 RH |
736 | } |
737 | ||
738 | /* | |
739 | FUNCTION | |
740 | bfd_close_all_done | |
741 | ||
742 | SYNOPSIS | |
b34976b6 | 743 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
744 | |
745 | DESCRIPTION | |
7c4a37eb AM |
746 | Close a BFD. Differs from <<bfd_close>> since it does not |
747 | complete any pending operations. This routine would be used | |
748 | if the application had just used BFD for swapping and didn't | |
749 | want to use any of the writing code. | |
252b5132 RH |
750 | |
751 | If the created file is executable, then <<chmod>> is called | |
752 | to mark it as such. | |
753 | ||
754 | All memory attached to the BFD is released. | |
755 | ||
756 | RETURNS | |
b34976b6 | 757 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
758 | */ |
759 | ||
b34976b6 | 760 | bfd_boolean |
c58b9523 | 761 | bfd_close_all_done (bfd *abfd) |
252b5132 | 762 | { |
b34976b6 | 763 | bfd_boolean ret; |
252b5132 | 764 | |
7c0ed396 L |
765 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) |
766 | return FALSE; | |
767 | ||
e234de6b AM |
768 | ret = abfd->iovec->bclose (abfd) == 0; |
769 | ||
8c7d38e8 NC |
770 | if (ret) |
771 | _maybe_make_executable (abfd); | |
252b5132 | 772 | |
73e87d70 | 773 | _bfd_delete_bfd (abfd); |
252b5132 RH |
774 | |
775 | return ret; | |
776 | } | |
777 | ||
778 | /* | |
779 | FUNCTION | |
780 | bfd_create | |
781 | ||
782 | SYNOPSIS | |
c58b9523 | 783 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
784 | |
785 | DESCRIPTION | |
7c4a37eb AM |
786 | Create a new BFD in the manner of <<bfd_openw>>, but without |
787 | opening a file. The new BFD takes the target from the target | |
fc1cfaa5 | 788 | used by @var{templ}. The format is always set to <<bfd_object>>. |
1be5090b NC |
789 | |
790 | A copy of the @var{filename} argument is stored in the newly created | |
791 | BFD. It can be accessed via the bfd_get_filename() macro. | |
252b5132 RH |
792 | */ |
793 | ||
794 | bfd * | |
c58b9523 | 795 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
796 | { |
797 | bfd *nbfd; | |
798 | ||
799 | nbfd = _bfd_new_bfd (); | |
800 | if (nbfd == NULL) | |
801 | return NULL; | |
1be5090b NC |
802 | /* PR 11983: Do not cache the original filename, but |
803 | rather make a copy - the original might go away. */ | |
804 | nbfd->filename = xstrdup (filename); | |
252b5132 RH |
805 | if (templ) |
806 | nbfd->xvec = templ->xvec; | |
807 | nbfd->direction = no_direction; | |
808 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 809 | |
252b5132 RH |
810 | return nbfd; |
811 | } | |
812 | ||
813 | /* | |
814 | FUNCTION | |
815 | bfd_make_writable | |
816 | ||
817 | SYNOPSIS | |
b34976b6 | 818 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
819 | |
820 | DESCRIPTION | |
821 | Takes a BFD as created by <<bfd_create>> and converts it | |
822 | into one like as returned by <<bfd_openw>>. It does this | |
823 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
824 | you will call <<bfd_make_readable>> on this bfd later. | |
825 | ||
826 | RETURNS | |
b34976b6 | 827 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
828 | */ |
829 | ||
b34976b6 | 830 | bfd_boolean |
c58b9523 | 831 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
832 | { |
833 | struct bfd_in_memory *bim; | |
834 | ||
835 | if (abfd->direction != no_direction) | |
836 | { | |
837 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 838 | return FALSE; |
252b5132 RH |
839 | } |
840 | ||
a50b1753 | 841 | bim = (struct bfd_in_memory *) bfd_malloc (sizeof (struct bfd_in_memory)); |
f6eea5ae MS |
842 | if (bim == NULL) |
843 | return FALSE; /* bfd_error already set. */ | |
c58b9523 | 844 | abfd->iostream = bim; |
c4f3d130 | 845 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
846 | bim->size = 0; |
847 | bim->buffer = 0; | |
848 | ||
849 | abfd->flags |= BFD_IN_MEMORY; | |
65077aa8 TG |
850 | abfd->iovec = &_bfd_memory_iovec; |
851 | abfd->origin = 0; | |
252b5132 RH |
852 | abfd->direction = write_direction; |
853 | abfd->where = 0; | |
854 | ||
b34976b6 | 855 | return TRUE; |
252b5132 RH |
856 | } |
857 | ||
858 | /* | |
859 | FUNCTION | |
860 | bfd_make_readable | |
861 | ||
862 | SYNOPSIS | |
b34976b6 | 863 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
864 | |
865 | DESCRIPTION | |
866 | Takes a BFD as created by <<bfd_create>> and | |
867 | <<bfd_make_writable>> and converts it into one like as | |
868 | returned by <<bfd_openr>>. It does this by writing the | |
869 | contents out to the memory buffer, then reversing the | |
870 | direction. | |
871 | ||
872 | RETURNS | |
b34976b6 | 873 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 874 | |
b34976b6 | 875 | bfd_boolean |
c58b9523 | 876 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
877 | { |
878 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
879 | { | |
880 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 881 | return FALSE; |
252b5132 RH |
882 | } |
883 | ||
884 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 885 | return FALSE; |
252b5132 RH |
886 | |
887 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 888 | return FALSE; |
252b5132 | 889 | |
252b5132 RH |
890 | abfd->arch_info = &bfd_default_arch_struct; |
891 | ||
892 | abfd->where = 0; | |
252b5132 | 893 | abfd->format = bfd_unknown; |
c58b9523 | 894 | abfd->my_archive = NULL; |
dc810e39 | 895 | abfd->origin = 0; |
b34976b6 AM |
896 | abfd->opened_once = FALSE; |
897 | abfd->output_has_begun = FALSE; | |
252b5132 | 898 | abfd->section_count = 0; |
c58b9523 | 899 | abfd->usrdata = NULL; |
b34976b6 | 900 | abfd->cacheable = FALSE; |
9e2278f5 | 901 | abfd->flags |= BFD_IN_MEMORY; |
b34976b6 | 902 | abfd->mtime_set = FALSE; |
252b5132 | 903 | |
b34976b6 | 904 | abfd->target_defaulted = TRUE; |
252b5132 RH |
905 | abfd->direction = read_direction; |
906 | abfd->sections = 0; | |
907 | abfd->symcount = 0; | |
908 | abfd->outsymbols = 0; | |
909 | abfd->tdata.any = 0; | |
910 | ||
e54fdaa5 AM |
911 | bfd_section_list_clear (abfd); |
912 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 913 | |
b34976b6 | 914 | return TRUE; |
252b5132 RH |
915 | } |
916 | ||
917 | /* | |
59a9808d | 918 | FUNCTION |
252b5132 RH |
919 | bfd_alloc |
920 | ||
921 | SYNOPSIS | |
0fdea5ce | 922 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
923 | |
924 | DESCRIPTION | |
925 | Allocate a block of @var{wanted} bytes of memory attached to | |
926 | <<abfd>> and return a pointer to it. | |
927 | */ | |
928 | ||
c58b9523 AM |
929 | void * |
930 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 931 | { |
c58b9523 | 932 | void *ret; |
36e9d67b | 933 | unsigned long ul_size = (unsigned long) size; |
252b5132 | 934 | |
36e9d67b | 935 | if (size != ul_size |
db6b071a NC |
936 | /* Note - although objalloc_alloc takes an unsigned long as its |
937 | argument, internally the size is treated as a signed long. This can | |
938 | lead to problems where, for example, a request to allocate -1 bytes | |
939 | can result in just 1 byte being allocated, rather than | |
940 | ((unsigned long) -1) bytes. Also memory checkers will often | |
941 | complain about attempts to allocate a negative amount of memory. | |
942 | So to stop these problems we fail if the size is negative. */ | |
943 | || ((signed long) ul_size) < 0) | |
dc810e39 AM |
944 | { |
945 | bfd_set_error (bfd_error_no_memory); | |
946 | return NULL; | |
947 | } | |
db6b071a | 948 | |
36e9d67b | 949 | ret = objalloc_alloc ((struct objalloc *) abfd->memory, ul_size); |
252b5132 RH |
950 | if (ret == NULL) |
951 | bfd_set_error (bfd_error_no_memory); | |
952 | return ret; | |
953 | } | |
954 | ||
d0fb9a8d JJ |
955 | /* |
956 | INTERNAL_FUNCTION | |
957 | bfd_alloc2 | |
958 | ||
959 | SYNOPSIS | |
960 | void *bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
961 | ||
962 | DESCRIPTION | |
963 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
964 | of memory attached to <<abfd>> and return a pointer to it. | |
965 | */ | |
966 | ||
967 | void * | |
968 | bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
969 | { | |
d0fb9a8d JJ |
970 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
971 | && size != 0 | |
972 | && nmemb > ~(bfd_size_type) 0 / size) | |
973 | { | |
974 | bfd_set_error (bfd_error_no_memory); | |
975 | return NULL; | |
976 | } | |
977 | ||
36e9d67b | 978 | return bfd_alloc (abfd, size * nmemb); |
d0fb9a8d JJ |
979 | } |
980 | ||
c3e8c140 | 981 | /* |
59a9808d | 982 | FUNCTION |
c3e8c140 BE |
983 | bfd_zalloc |
984 | ||
985 | SYNOPSIS | |
986 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
987 | ||
988 | DESCRIPTION | |
989 | Allocate a block of @var{wanted} bytes of zeroed memory | |
990 | attached to <<abfd>> and return a pointer to it. | |
991 | */ | |
992 | ||
c58b9523 AM |
993 | void * |
994 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 995 | { |
c58b9523 | 996 | void *res; |
252b5132 RH |
997 | |
998 | res = bfd_alloc (abfd, size); | |
999 | if (res) | |
dc810e39 | 1000 | memset (res, 0, (size_t) size); |
252b5132 RH |
1001 | return res; |
1002 | } | |
1003 | ||
d0fb9a8d JJ |
1004 | /* |
1005 | INTERNAL_FUNCTION | |
1006 | bfd_zalloc2 | |
1007 | ||
1008 | SYNOPSIS | |
1009 | void *bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
1010 | ||
1011 | DESCRIPTION | |
1012 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
1013 | of zeroed memory attached to <<abfd>> and return a pointer to it. | |
1014 | */ | |
1015 | ||
1016 | void * | |
1017 | bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
1018 | { | |
1019 | void *res; | |
1020 | ||
1021 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
1022 | && size != 0 | |
1023 | && nmemb > ~(bfd_size_type) 0 / size) | |
1024 | { | |
1025 | bfd_set_error (bfd_error_no_memory); | |
1026 | return NULL; | |
1027 | } | |
1028 | ||
1029 | size *= nmemb; | |
1030 | ||
1031 | res = bfd_alloc (abfd, size); | |
1032 | if (res) | |
1033 | memset (res, 0, (size_t) size); | |
1034 | return res; | |
1035 | } | |
1036 | ||
73e87d70 AM |
1037 | /* Free a block allocated for a BFD. |
1038 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
1039 | |
1040 | void | |
c58b9523 | 1041 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
1042 | { |
1043 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
1044 | } | |
31f7ba04 NC |
1045 | |
1046 | ||
f12123c0 AM |
1047 | /* |
1048 | GNU Extension: separate debug-info files | |
1049 | ||
31f7ba04 NC |
1050 | The idea here is that a special section called .gnu_debuglink might be |
1051 | embedded in a binary file, which indicates that some *other* file | |
1052 | contains the real debugging information. This special section contains a | |
1053 | filename and CRC32 checksum, which we read and resolve to another file, | |
1054 | if it exists. | |
1055 | ||
1056 | This facilitates "optional" provision of debugging information, without | |
1057 | having to provide two complete copies of every binary object (with and | |
95e34fb4 NC |
1058 | without debug symbols). */ |
1059 | ||
1060 | #define GNU_DEBUGLINK ".gnu_debuglink" | |
1061 | #define GNU_DEBUGALTLINK ".gnu_debugaltlink" | |
31f7ba04 | 1062 | |
31f7ba04 | 1063 | /* |
2593f09a NC |
1064 | FUNCTION |
1065 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
1066 | |
1067 | SYNOPSIS | |
c58b9523 AM |
1068 | unsigned long bfd_calc_gnu_debuglink_crc32 |
1069 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
1070 | |
1071 | DESCRIPTION | |
2593f09a NC |
1072 | Computes a CRC value as used in the .gnu_debuglink section. |
1073 | Advances the previously computed @var{crc} value by computing | |
1074 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
1075 | ||
1076 | RETURNS | |
1077 | Return the updated CRC32 value. | |
f12123c0 | 1078 | */ |
31f7ba04 | 1079 | |
2593f09a | 1080 | unsigned long |
c58b9523 AM |
1081 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
1082 | const unsigned char *buf, | |
1083 | bfd_size_type len) | |
31f7ba04 NC |
1084 | { |
1085 | static const unsigned long crc32_table[256] = | |
1086 | { | |
1087 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
1088 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
1089 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
1090 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
1091 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
1092 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
1093 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
1094 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
1095 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
1096 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
1097 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
1098 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
1099 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
1100 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
1101 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
1102 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
1103 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
1104 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
1105 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
1106 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
1107 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
1108 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
1109 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
1110 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
1111 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
1112 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
1113 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
1114 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
1115 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
1116 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
1117 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
1118 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
1119 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
1120 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
1121 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
1122 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
1123 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
1124 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
1125 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
1126 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
1127 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
1128 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
1129 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
1130 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
1131 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
1132 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
1133 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
1134 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
1135 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
1136 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
1137 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
1138 | 0x2d02ef8d | |
1139 | }; | |
1140 | const unsigned char *end; | |
1141 | ||
1142 | crc = ~crc & 0xffffffff; | |
1143 | for (end = buf + len; buf < end; ++ buf) | |
1144 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
5bb3703f | 1145 | return ~crc & 0xffffffff; |
31f7ba04 NC |
1146 | } |
1147 | ||
1148 | ||
1149 | /* | |
49f4617b PA |
1150 | INTERNAL_FUNCTION |
1151 | bfd_get_debug_link_info_1 | |
31f7ba04 NC |
1152 | |
1153 | SYNOPSIS | |
49f4617b | 1154 | char *bfd_get_debug_link_info_1 (bfd *abfd, void *crc32_out); |
31f7ba04 NC |
1155 | |
1156 | DESCRIPTION | |
49f4617b PA |
1157 | Extracts the filename and CRC32 value for any separate debug |
1158 | information file associated with @var{abfd}. | |
1159 | ||
1160 | The @var{crc32_out} parameter is an untyped pointer because | |
1161 | this routine is used as a @code{get_func_type} function, but it | |
1162 | is expected to be an unsigned long pointer. | |
1163 | ||
1164 | RETURNS | |
1165 | The filename of the associated debug information file, or NULL | |
1166 | if there is no such file. If the filename was found then the | |
1167 | contents of @var{crc32_out} are updated to hold the corresponding | |
1168 | CRC32 value for the file. | |
1169 | ||
1170 | The returned filename is allocated with @code{malloc}; freeing | |
1171 | it is the responsibility of the caller. | |
31f7ba04 NC |
1172 | */ |
1173 | ||
49f4617b PA |
1174 | static char * |
1175 | bfd_get_debug_link_info_1 (bfd *abfd, void *crc32_out) | |
31f7ba04 | 1176 | { |
eea6121a | 1177 | asection *sect; |
49f4617b | 1178 | unsigned long *crc32 = (unsigned long *) crc32_out; |
eea6121a | 1179 | bfd_byte *contents; |
470c009b | 1180 | unsigned int crc_offset; |
f075ee0c | 1181 | char *name; |
31f7ba04 NC |
1182 | |
1183 | BFD_ASSERT (abfd); | |
1184 | BFD_ASSERT (crc32_out); | |
1185 | ||
2593f09a | 1186 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1187 | |
1188 | if (sect == NULL) | |
1189 | return NULL; | |
1190 | ||
eea6121a | 1191 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1192 | { |
eea6121a AM |
1193 | if (contents != NULL) |
1194 | free (contents); | |
31f7ba04 NC |
1195 | return NULL; |
1196 | } | |
1197 | ||
470c009b | 1198 | /* CRC value is stored after the filename, aligned up to 4 bytes. */ |
f075ee0c | 1199 | name = (char *) contents; |
470c009b NC |
1200 | /* PR 17597: avoid reading off the end of the buffer. */ |
1201 | crc_offset = strnlen (name, bfd_get_section_size (sect)) + 1; | |
31f7ba04 | 1202 | crc_offset = (crc_offset + 3) & ~3; |
52b36c51 | 1203 | if (crc_offset + 4 > bfd_get_section_size (sect)) |
470c009b | 1204 | return NULL; |
31f7ba04 | 1205 | |
49f4617b | 1206 | *crc32 = bfd_get_32 (abfd, contents + crc_offset); |
f075ee0c | 1207 | return name; |
31f7ba04 NC |
1208 | } |
1209 | ||
49f4617b PA |
1210 | |
1211 | /* | |
1212 | FUNCTION | |
1213 | bfd_get_debug_link_info | |
1214 | ||
1215 | SYNOPSIS | |
1216 | char *bfd_get_debug_link_info (bfd *abfd, unsigned long *crc32_out); | |
1217 | ||
1218 | DESCRIPTION | |
1219 | Extracts the filename and CRC32 value for any separate debug | |
1220 | information file associated with @var{abfd}. | |
1221 | ||
1222 | RETURNS | |
1223 | The filename of the associated debug information file, or NULL | |
1224 | if there is no such file. If the filename was found then the | |
1225 | contents of @var{crc32_out} are updated to hold the corresponding | |
1226 | CRC32 value for the file. | |
1227 | ||
1228 | The returned filename is allocated with @code{malloc}; freeing | |
1229 | it is the responsibility of the caller. | |
1230 | */ | |
1231 | ||
1232 | char * | |
1233 | bfd_get_debug_link_info (bfd *abfd, unsigned long *crc32_out) | |
1234 | { | |
1235 | return bfd_get_debug_link_info_1 (abfd, crc32_out); | |
1236 | } | |
1237 | ||
95e34fb4 NC |
1238 | /* |
1239 | FUNCTION | |
1240 | bfd_get_alt_debug_link_info | |
1241 | ||
1242 | SYNOPSIS | |
acd13123 TT |
1243 | char *bfd_get_alt_debug_link_info (bfd * abfd, |
1244 | bfd_size_type *buildid_len, | |
07d6d2b8 | 1245 | bfd_byte **buildid_out); |
95e34fb4 NC |
1246 | |
1247 | DESCRIPTION | |
1248 | Fetch the filename and BuildID value for any alternate debuginfo | |
1249 | associated with @var{abfd}. Return NULL if no such info found, | |
dc294be5 TT |
1250 | otherwise return filename and update @var{buildid_len} and |
1251 | @var{buildid_out}. The returned filename and build_id are | |
49f4617b PA |
1252 | allocated with @code{malloc}; freeing them is the responsibility |
1253 | of the caller. | |
95e34fb4 NC |
1254 | */ |
1255 | ||
1256 | char * | |
acd13123 | 1257 | bfd_get_alt_debug_link_info (bfd * abfd, bfd_size_type *buildid_len, |
dc294be5 | 1258 | bfd_byte **buildid_out) |
95e34fb4 NC |
1259 | { |
1260 | asection *sect; | |
1261 | bfd_byte *contents; | |
470c009b | 1262 | unsigned int buildid_offset; |
95e34fb4 NC |
1263 | char *name; |
1264 | ||
1265 | BFD_ASSERT (abfd); | |
dc294be5 | 1266 | BFD_ASSERT (buildid_len); |
95e34fb4 NC |
1267 | BFD_ASSERT (buildid_out); |
1268 | ||
1269 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGALTLINK); | |
1270 | ||
1271 | if (sect == NULL) | |
1272 | return NULL; | |
1273 | ||
1274 | if (!bfd_malloc_and_get_section (abfd, sect, & contents)) | |
1275 | { | |
1276 | if (contents != NULL) | |
1277 | free (contents); | |
1278 | return NULL; | |
1279 | } | |
1280 | ||
dc294be5 | 1281 | /* BuildID value is stored after the filename. */ |
95e34fb4 | 1282 | name = (char *) contents; |
470c009b NC |
1283 | buildid_offset = strnlen (name, bfd_get_section_size (sect)) + 1; |
1284 | if (buildid_offset >= bfd_get_section_size (sect)) | |
1285 | return NULL; | |
95e34fb4 | 1286 | |
dc294be5 TT |
1287 | *buildid_len = bfd_get_section_size (sect) - buildid_offset; |
1288 | *buildid_out = bfd_malloc (*buildid_len); | |
1289 | memcpy (*buildid_out, contents + buildid_offset, *buildid_len); | |
95e34fb4 NC |
1290 | |
1291 | return name; | |
1292 | } | |
1293 | ||
31f7ba04 NC |
1294 | /* |
1295 | INTERNAL_FUNCTION | |
1296 | separate_debug_file_exists | |
1297 | ||
1298 | SYNOPSIS | |
c58b9523 | 1299 | bfd_boolean separate_debug_file_exists |
49f4617b | 1300 | (char *name, void *crc32_p); |
31f7ba04 NC |
1301 | |
1302 | DESCRIPTION | |
1303 | Checks to see if @var{name} is a file and if its contents | |
49f4617b PA |
1304 | match @var{crc32}, which is a pointer to an @code{unsigned |
1305 | long} containing a CRC32. | |
1306 | ||
1307 | The @var{crc32_p} parameter is an untyped pointer because | |
1308 | this routine is used as a @code{check_func_type} function. | |
31f7ba04 NC |
1309 | */ |
1310 | ||
1311 | static bfd_boolean | |
49f4617b | 1312 | separate_debug_file_exists (const char *name, void *crc32_p) |
31f7ba04 | 1313 | { |
f075ee0c | 1314 | static unsigned char buffer [8 * 1024]; |
31f7ba04 | 1315 | unsigned long file_crc = 0; |
fed590bb | 1316 | FILE *f; |
2593f09a | 1317 | bfd_size_type count; |
49f4617b | 1318 | unsigned long crc; |
31f7ba04 NC |
1319 | |
1320 | BFD_ASSERT (name); | |
49f4617b PA |
1321 | BFD_ASSERT (crc32_p); |
1322 | ||
1323 | crc = *(unsigned long *) crc32_p; | |
31f7ba04 | 1324 | |
c7c3d11b | 1325 | f = _bfd_real_fopen (name, FOPEN_RB); |
fed590bb | 1326 | if (f == NULL) |
31f7ba04 NC |
1327 | return FALSE; |
1328 | ||
fed590bb | 1329 | while ((count = fread (buffer, 1, sizeof (buffer), f)) > 0) |
2593f09a | 1330 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 | 1331 | |
fed590bb | 1332 | fclose (f); |
31f7ba04 NC |
1333 | |
1334 | return crc == file_crc; | |
1335 | } | |
1336 | ||
95e34fb4 NC |
1337 | /* |
1338 | INTERNAL_FUNCTION | |
1339 | separate_alt_debug_file_exists | |
1340 | ||
1341 | SYNOPSIS | |
1342 | bfd_boolean separate_alt_debug_file_exists | |
49f4617b | 1343 | (char *name, void *unused); |
95e34fb4 NC |
1344 | |
1345 | DESCRIPTION | |
49f4617b | 1346 | Checks to see if @var{name} is a file. |
95e34fb4 NC |
1347 | */ |
1348 | ||
1349 | static bfd_boolean | |
49f4617b | 1350 | separate_alt_debug_file_exists (const char *name, void *unused ATTRIBUTE_UNUSED) |
95e34fb4 NC |
1351 | { |
1352 | FILE *f; | |
1353 | ||
1354 | BFD_ASSERT (name); | |
1355 | ||
c7c3d11b | 1356 | f = _bfd_real_fopen (name, FOPEN_RB); |
95e34fb4 NC |
1357 | if (f == NULL) |
1358 | return FALSE; | |
1359 | ||
95e34fb4 NC |
1360 | fclose (f); |
1361 | ||
1362 | return TRUE; | |
1363 | } | |
31f7ba04 NC |
1364 | |
1365 | /* | |
1366 | INTERNAL_FUNCTION | |
1367 | find_separate_debug_file | |
1368 | ||
1369 | SYNOPSIS | |
2425a30e NC |
1370 | char *find_separate_debug_file |
1371 | (bfd *abfd, const char *dir, bfd_boolean include_dirs, | |
49f4617b | 1372 | get_func_type get, check_func_type check, void *data); |
31f7ba04 NC |
1373 | |
1374 | DESCRIPTION | |
2425a30e | 1375 | Searches for a debug information file corresponding to @var{abfd}. |
49f4617b PA |
1376 | |
1377 | The name of the separate debug info file is returned by the | |
1378 | @var{get} function. This function scans various fixed locations | |
1379 | in the filesystem, including the file tree rooted at @var{dir}. | |
1380 | If the @var{include_dirs} parameter is true then the directory | |
1381 | components of @var{abfd}'s filename will be included in the | |
1382 | searched locations. | |
1383 | ||
1384 | @var{data} is passed unmodified to the @var{get} and @var{check} | |
1385 | functions. It is generally used to implement build-id-like | |
1386 | matching in the callback functions. | |
1387 | ||
1388 | RETURNS | |
1389 | Returns the filename of the first file to be found which | |
1390 | receives a TRUE result from the @var{check} function. | |
1391 | Returns NULL if no valid file could be found. | |
31f7ba04 NC |
1392 | */ |
1393 | ||
49f4617b PA |
1394 | typedef char * (* get_func_type) (bfd *, void *); |
1395 | typedef bfd_boolean (* check_func_type) (const char *, void *); | |
95e34fb4 | 1396 | |
31f7ba04 | 1397 | static char * |
07d6d2b8 AM |
1398 | find_separate_debug_file (bfd * abfd, |
1399 | const char * debug_file_directory, | |
1400 | bfd_boolean include_dirs, | |
1401 | get_func_type get_func, | |
49f4617b | 1402 | check_func_type check_func, |
07d6d2b8 | 1403 | void * func_data) |
31f7ba04 | 1404 | { |
91d6fa6a | 1405 | char *base; |
31f7ba04 NC |
1406 | char *dir; |
1407 | char *debugfile; | |
91910cdd | 1408 | char *canon_dir; |
3ea6b9a5 | 1409 | size_t dirlen; |
91910cdd | 1410 | size_t canon_dirlen; |
31f7ba04 NC |
1411 | |
1412 | BFD_ASSERT (abfd); | |
1413 | if (debug_file_directory == NULL) | |
1414 | debug_file_directory = "."; | |
1415 | ||
1416 | /* BFD may have been opened from a stream. */ | |
3ea6b9a5 AM |
1417 | if (abfd->filename == NULL) |
1418 | { | |
1419 | bfd_set_error (bfd_error_invalid_operation); | |
1420 | return NULL; | |
1421 | } | |
31f7ba04 | 1422 | |
49f4617b | 1423 | base = get_func (abfd, func_data); |
1b786873 | 1424 | |
91d6fa6a | 1425 | if (base == NULL) |
31f7ba04 | 1426 | return NULL; |
2593f09a | 1427 | |
91d6fa6a | 1428 | if (base[0] == '\0') |
5ed6aba4 | 1429 | { |
91d6fa6a | 1430 | free (base); |
3ea6b9a5 | 1431 | bfd_set_error (bfd_error_no_debug_section); |
5ed6aba4 NC |
1432 | return NULL; |
1433 | } | |
31f7ba04 | 1434 | |
2425a30e NC |
1435 | if (include_dirs) |
1436 | { | |
1437 | for (dirlen = strlen (abfd->filename); dirlen > 0; dirlen--) | |
1438 | if (IS_DIR_SEPARATOR (abfd->filename[dirlen - 1])) | |
1439 | break; | |
3ea6b9a5 | 1440 | |
2425a30e NC |
1441 | dir = (char *) bfd_malloc (dirlen + 1); |
1442 | if (dir == NULL) | |
1443 | { | |
1444 | free (base); | |
1445 | return NULL; | |
1446 | } | |
1447 | memcpy (dir, abfd->filename, dirlen); | |
1448 | dir[dirlen] = '\0'; | |
1449 | } | |
1450 | else | |
2593f09a | 1451 | { |
2425a30e NC |
1452 | dir = (char *) bfd_malloc (1); |
1453 | * dir = 0; | |
1454 | dirlen = 0; | |
2593f09a | 1455 | } |
3ea6b9a5 | 1456 | |
91910cdd AS |
1457 | /* Compute the canonical name of the bfd object with all symbolic links |
1458 | resolved, for use in the global debugfile directory. */ | |
1459 | canon_dir = lrealpath (abfd->filename); | |
1460 | for (canon_dirlen = strlen (canon_dir); canon_dirlen > 0; canon_dirlen--) | |
1461 | if (IS_DIR_SEPARATOR (canon_dir[canon_dirlen - 1])) | |
1462 | break; | |
1463 | canon_dir[canon_dirlen] = '\0'; | |
1464 | ||
2425a30e NC |
1465 | #ifndef EXTRA_DEBUG_ROOT1 |
1466 | #define EXTRA_DEBUG_ROOT1 "/usr/lib/debug" | |
1467 | #endif | |
1468 | #ifndef EXTRA_DEBUG_ROOT2 | |
1469 | #define EXTRA_DEBUG_ROOT2 "/usr/lib/debug/usr" | |
49f4617b | 1470 | #endif |
2425a30e | 1471 | |
a50b1753 NC |
1472 | debugfile = (char *) |
1473 | bfd_malloc (strlen (debug_file_directory) + 1 | |
07d6d2b8 AM |
1474 | + (canon_dirlen > dirlen ? canon_dirlen : dirlen) |
1475 | + strlen (".debug/") | |
2425a30e NC |
1476 | #ifdef EXTRA_DEBUG_ROOT1 |
1477 | + strlen (EXTRA_DEBUG_ROOT1) | |
1478 | #endif | |
1479 | #ifdef EXTRA_DEBUG_ROOT2 | |
1480 | + strlen (EXTRA_DEBUG_ROOT2) | |
1481 | #endif | |
07d6d2b8 AM |
1482 | + strlen (base) |
1483 | + 1); | |
2593f09a | 1484 | if (debugfile == NULL) |
95e34fb4 | 1485 | goto found; /* Actually this returns NULL. */ |
31f7ba04 | 1486 | |
2425a30e | 1487 | /* First try in the same directory as the original file. |
31f7ba04 | 1488 | |
2425a30e NC |
1489 | FIXME: Strictly speaking if we are using the build-id method, |
1490 | (ie include_dirs == FALSE) then we should only check absolute | |
1491 | paths, not relative ones like this one (and the next one). | |
1492 | The check is left in however as this allows the binutils | |
1493 | testsuite to exercise this feature without having to install | |
1494 | a file into the root filesystem. (See binutils/testsuite/ | |
1495 | binutils-all/objdump.exp for the test). */ | |
1496 | sprintf (debugfile, "%s%s", dir, base); | |
49f4617b | 1497 | if (check_func (debugfile, func_data)) |
95e34fb4 | 1498 | goto found; |
31f7ba04 NC |
1499 | |
1500 | /* Then try in a subdirectory called .debug. */ | |
2425a30e | 1501 | sprintf (debugfile, "%s.debug/%s", dir, base); |
49f4617b | 1502 | if (check_func (debugfile, func_data)) |
2425a30e | 1503 | goto found; |
31f7ba04 | 1504 | |
2425a30e NC |
1505 | #ifdef EXTRA_DEBUG_ROOT1 |
1506 | /* Try the first extra debug file root. */ | |
1507 | sprintf (debugfile, "%s%s%s", EXTRA_DEBUG_ROOT1, | |
1508 | include_dirs ? canon_dir : "/", base); | |
49f4617b | 1509 | if (check_func (debugfile, func_data)) |
95e34fb4 | 1510 | goto found; |
2425a30e | 1511 | #endif |
31f7ba04 | 1512 | |
2425a30e NC |
1513 | #ifdef EXTRA_DEBUG_ROOT2 |
1514 | /* Try the second extra debug file root. */ | |
1515 | sprintf (debugfile, "%s%s%s", EXTRA_DEBUG_ROOT2, | |
1516 | include_dirs ? canon_dir : "/", base); | |
49f4617b | 1517 | if (check_func (debugfile, func_data)) |
2425a30e NC |
1518 | goto found; |
1519 | #endif | |
49f4617b | 1520 | |
31f7ba04 NC |
1521 | /* Then try in the global debugfile directory. */ |
1522 | strcpy (debugfile, debug_file_directory); | |
91910cdd | 1523 | dirlen = strlen (debug_file_directory) - 1; |
2425a30e NC |
1524 | if (include_dirs) |
1525 | { | |
1526 | if (dirlen > 0 | |
1527 | && debug_file_directory[dirlen] != '/' | |
1528 | && canon_dir[0] != '/') | |
1529 | strcat (debugfile, "/"); | |
1530 | strcat (debugfile, canon_dir); | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | if (dirlen > 0 && debug_file_directory[dirlen] != '/') | |
1535 | strcat (debugfile, "/"); | |
1536 | } | |
91d6fa6a | 1537 | strcat (debugfile, base); |
31f7ba04 | 1538 | |
49f4617b | 1539 | if (check_func (debugfile, func_data)) |
95e34fb4 | 1540 | goto found; |
31f7ba04 | 1541 | |
95e34fb4 | 1542 | /* Failed to find the file. */ |
31f7ba04 | 1543 | free (debugfile); |
95e34fb4 NC |
1544 | debugfile = NULL; |
1545 | ||
1546 | found: | |
91d6fa6a | 1547 | free (base); |
31f7ba04 | 1548 | free (dir); |
91910cdd | 1549 | free (canon_dir); |
95e34fb4 | 1550 | return debugfile; |
31f7ba04 NC |
1551 | } |
1552 | ||
31f7ba04 NC |
1553 | /* |
1554 | FUNCTION | |
1555 | bfd_follow_gnu_debuglink | |
1556 | ||
1557 | SYNOPSIS | |
c58b9523 | 1558 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1559 | |
1560 | DESCRIPTION | |
31f7ba04 | 1561 | Takes a BFD and searches it for a .gnu_debuglink section. If this |
28d39d1a NC |
1562 | section is found, it examines the section for the name and checksum |
1563 | of a '.debug' file containing auxiliary debugging information. It | |
1564 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1565 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1566 | found returns the full filename. |
1567 | ||
2425a30e NC |
1568 | If @var{dir} is NULL, the search will take place starting at |
1569 | the current directory. | |
31f7ba04 NC |
1570 | |
1571 | RETURNS | |
1572 | <<NULL>> on any errors or failure to locate the .debug file, | |
1573 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1574 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1575 | */ |
1576 | ||
1577 | char * | |
c58b9523 | 1578 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1579 | { |
49f4617b PA |
1580 | unsigned long crc32; |
1581 | ||
2425a30e | 1582 | return find_separate_debug_file (abfd, dir, TRUE, |
49f4617b PA |
1583 | bfd_get_debug_link_info_1, |
1584 | separate_debug_file_exists, &crc32); | |
95e34fb4 NC |
1585 | } |
1586 | ||
49f4617b PA |
1587 | /* Helper for bfd_follow_gnu_debugaltlink. It just returns the name |
1588 | of the separate debug file. */ | |
dc294be5 TT |
1589 | |
1590 | static char * | |
49f4617b | 1591 | get_alt_debug_link_info_shim (bfd * abfd, void *unused ATTRIBUTE_UNUSED) |
dc294be5 | 1592 | { |
6e114b15 | 1593 | bfd_size_type len; |
dc294be5 TT |
1594 | bfd_byte *buildid = NULL; |
1595 | char *result = bfd_get_alt_debug_link_info (abfd, &len, &buildid); | |
1596 | ||
dc294be5 TT |
1597 | free (buildid); |
1598 | ||
1599 | return result; | |
1600 | } | |
1601 | ||
95e34fb4 NC |
1602 | /* |
1603 | FUNCTION | |
1604 | bfd_follow_gnu_debugaltlink | |
1605 | ||
1606 | SYNOPSIS | |
1607 | char *bfd_follow_gnu_debugaltlink (bfd *abfd, const char *dir); | |
1608 | ||
1609 | DESCRIPTION | |
95e34fb4 NC |
1610 | Takes a BFD and searches it for a .gnu_debugaltlink section. If this |
1611 | section is found, it examines the section for the name of a file | |
2425a30e | 1612 | containing auxiliary debugging information. It then searches the |
95e34fb4 NC |
1613 | filesystem for this file in a set of standard locations, including |
1614 | the directory tree rooted at @var{dir}, and if found returns the | |
1615 | full filename. | |
1616 | ||
2425a30e NC |
1617 | If @var{dir} is NULL, the search will take place starting at |
1618 | the current directory. | |
95e34fb4 NC |
1619 | |
1620 | RETURNS | |
1621 | <<NULL>> on any errors or failure to locate the debug file, | |
1622 | otherwise a pointer to a heap-allocated string containing the | |
1623 | filename. The caller is responsible for freeing this string. | |
1624 | */ | |
1625 | ||
1626 | char * | |
1627 | bfd_follow_gnu_debugaltlink (bfd *abfd, const char *dir) | |
1628 | { | |
2425a30e | 1629 | return find_separate_debug_file (abfd, dir, TRUE, |
dc294be5 | 1630 | get_alt_debug_link_info_shim, |
49f4617b PA |
1631 | separate_alt_debug_file_exists, |
1632 | NULL); | |
31f7ba04 | 1633 | } |
2593f09a NC |
1634 | |
1635 | /* | |
1636 | FUNCTION | |
e7c81c25 | 1637 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1638 | |
1639 | SYNOPSIS | |
198beae2 | 1640 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1641 | (bfd *abfd, const char *filename); |
2593f09a NC |
1642 | |
1643 | DESCRIPTION | |
49f4617b PA |
1644 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The |
1645 | section is sized to be big enough to contain a link to the specified | |
1646 | @var{filename}. | |
e7c81c25 NC |
1647 | |
1648 | RETURNS | |
49f4617b PA |
1649 | A pointer to the new section is returned if all is ok. Otherwise |
1650 | <<NULL>> is returned and bfd_error is set. | |
e7c81c25 NC |
1651 | */ |
1652 | ||
1653 | asection * | |
c58b9523 | 1654 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1655 | { |
c58b9523 AM |
1656 | asection *sect; |
1657 | bfd_size_type debuglink_size; | |
117ed4f8 | 1658 | flagword flags; |
e7c81c25 NC |
1659 | |
1660 | if (abfd == NULL || filename == NULL) | |
1661 | { | |
1662 | bfd_set_error (bfd_error_invalid_operation); | |
1663 | return NULL; | |
1664 | } | |
1665 | ||
1666 | /* Strip off any path components in filename. */ | |
1667 | filename = lbasename (filename); | |
f12123c0 | 1668 | |
e7c81c25 NC |
1669 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1670 | if (sect) | |
1671 | { | |
1672 | /* Section already exists. */ | |
1673 | bfd_set_error (bfd_error_invalid_operation); | |
1674 | return NULL; | |
1675 | } | |
1676 | ||
117ed4f8 AM |
1677 | flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; |
1678 | sect = bfd_make_section_with_flags (abfd, GNU_DEBUGLINK, flags); | |
e7c81c25 NC |
1679 | if (sect == NULL) |
1680 | return NULL; | |
1681 | ||
758d96d8 NC |
1682 | /* Compute the size of the section. Allow for the CRC after the filename, |
1683 | and padding so that it will start on a 4-byte boundary. */ | |
e7c81c25 NC |
1684 | debuglink_size = strlen (filename) + 1; |
1685 | debuglink_size += 3; | |
1686 | debuglink_size &= ~3; | |
1687 | debuglink_size += 4; | |
1688 | ||
1689 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1690 | /* XXX Should we delete the section from the bfd ? */ | |
1691 | return NULL; | |
f12123c0 | 1692 | |
758d96d8 NC |
1693 | /* PR 21193: Ensure that the section has 4-byte alignment for the CRC. |
1694 | Note - despite the name of the function being called, we are | |
1695 | setting an alignment power, not a byte alignment value. */ | |
1696 | bfd_set_section_alignment (abfd, sect, 2); | |
1697 | ||
e7c81c25 NC |
1698 | return sect; |
1699 | } | |
1700 | ||
1701 | ||
1702 | /* | |
1703 | FUNCTION | |
1704 | bfd_fill_in_gnu_debuglink_section | |
1705 | ||
1706 | SYNOPSIS | |
c58b9523 | 1707 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1708 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1709 | |
1710 | DESCRIPTION | |
e7c81c25 NC |
1711 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} |
1712 | and fills in the contents of the section to contain a link to the | |
1713 | specified @var{filename}. The filename should be relative to the | |
1714 | current directory. | |
2593f09a NC |
1715 | |
1716 | RETURNS | |
1717 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1718 | and bfd_error is set. |
2593f09a NC |
1719 | */ |
1720 | ||
1721 | bfd_boolean | |
c58b9523 | 1722 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1723 | struct bfd_section *sect, |
c58b9523 | 1724 | const char *filename) |
2593f09a | 1725 | { |
2593f09a NC |
1726 | bfd_size_type debuglink_size; |
1727 | unsigned long crc32; | |
1728 | char * contents; | |
1729 | bfd_size_type crc_offset; | |
1730 | FILE * handle; | |
f075ee0c | 1731 | static unsigned char buffer[8 * 1024]; |
2593f09a | 1732 | size_t count; |
3ea6b9a5 | 1733 | size_t filelen; |
2593f09a | 1734 | |
e7c81c25 | 1735 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1736 | { |
1737 | bfd_set_error (bfd_error_invalid_operation); | |
1738 | return FALSE; | |
1739 | } | |
1740 | ||
1741 | /* Make sure that we can read the file. | |
1742 | XXX - Should we attempt to locate the debug info file using the same | |
1743 | algorithm as gdb ? At the moment, since we are creating the | |
1744 | .gnu_debuglink section, we insist upon the user providing us with a | |
1745 | correct-for-section-creation-time path, but this need not conform to | |
1746 | the gdb location algorithm. */ | |
c7c3d11b | 1747 | handle = _bfd_real_fopen (filename, FOPEN_RB); |
2593f09a NC |
1748 | if (handle == NULL) |
1749 | { | |
1750 | bfd_set_error (bfd_error_system_call); | |
1751 | return FALSE; | |
1752 | } | |
1753 | ||
1754 | crc32 = 0; | |
1755 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1756 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1757 | fclose (handle); | |
1758 | ||
1759 | /* Strip off any path components in filename, | |
1760 | now that we no longer need them. */ | |
1761 | filename = lbasename (filename); | |
f12123c0 | 1762 | |
3ea6b9a5 AM |
1763 | filelen = strlen (filename); |
1764 | debuglink_size = filelen + 1; | |
2593f09a NC |
1765 | debuglink_size += 3; |
1766 | debuglink_size &= ~3; | |
1767 | debuglink_size += 4; | |
1768 | ||
a50b1753 | 1769 | contents = (char *) bfd_malloc (debuglink_size); |
2593f09a NC |
1770 | if (contents == NULL) |
1771 | { | |
1772 | /* XXX Should we delete the section from the bfd ? */ | |
2593f09a NC |
1773 | return FALSE; |
1774 | } | |
1775 | ||
2593f09a | 1776 | crc_offset = debuglink_size - 4; |
3ea6b9a5 AM |
1777 | memcpy (contents, filename, filelen); |
1778 | memset (contents + filelen, 0, crc_offset - filelen); | |
2593f09a | 1779 | |
c58b9523 | 1780 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1781 | |
c58b9523 | 1782 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1783 | { |
1784 | /* XXX Should we delete the section from the bfd ? */ | |
1785 | free (contents); | |
1786 | return FALSE; | |
1787 | } | |
1788 | ||
1789 | return TRUE; | |
1790 | } | |
2425a30e NC |
1791 | |
1792 | /* | |
1793 | INTERNAL_FUNCTION | |
1794 | get_build_id | |
1795 | ||
1796 | SYNOPSIS | |
49f4617b | 1797 | struct bfd_build_id * get_build_id (bfd *abfd); |
2425a30e NC |
1798 | |
1799 | DESCRIPTION | |
1800 | Finds the build-id associated with @var{abfd}. If the build-id is | |
1801 | extracted from the note section then a build-id structure is built | |
1802 | for it, using memory allocated to @var{abfd}, and this is then | |
1803 | attached to the @var{abfd}. | |
1804 | ||
49f4617b | 1805 | RETURNS |
2425a30e NC |
1806 | Returns a pointer to the build-id structure if a build-id could be |
1807 | found. If no build-id is found NULL is returned and error code is | |
1808 | set. | |
1809 | */ | |
1810 | ||
1811 | static struct bfd_build_id * | |
1812 | get_build_id (bfd *abfd) | |
1813 | { | |
1814 | struct bfd_build_id *build_id; | |
1815 | Elf_Internal_Note inote; | |
1816 | Elf_External_Note *enote; | |
1817 | bfd_byte *contents; | |
1818 | asection *sect; | |
cfd14a50 | 1819 | bfd_size_type size; |
2425a30e NC |
1820 | |
1821 | BFD_ASSERT (abfd); | |
1822 | ||
1823 | if (abfd->build_id && abfd->build_id->size > 0) | |
1824 | /* Save some time by using the already computed build-id. */ | |
1825 | return (struct bfd_build_id *) abfd->build_id; | |
1826 | ||
1827 | sect = bfd_get_section_by_name (abfd, ".note.gnu.build-id"); | |
1828 | if (sect == NULL) | |
1829 | { | |
1830 | bfd_set_error (bfd_error_no_debug_section); | |
1831 | return NULL; | |
1832 | } | |
1833 | ||
cfd14a50 | 1834 | size = bfd_get_section_size (sect); |
2425a30e | 1835 | /* FIXME: Should we support smaller build-id notes ? */ |
cfd14a50 | 1836 | if (size < 0x24) |
2425a30e NC |
1837 | { |
1838 | bfd_set_error (bfd_error_invalid_operation); | |
1839 | return NULL; | |
1840 | } | |
1841 | ||
1842 | if (!bfd_malloc_and_get_section (abfd, sect, & contents)) | |
1843 | { | |
1844 | if (contents != NULL) | |
1845 | free (contents); | |
1846 | return NULL; | |
1847 | } | |
1848 | ||
cfd14a50 NC |
1849 | /* FIXME: Paranoia - allow for compressed build-id sections. |
1850 | Maybe we should complain if this size is different from | |
1851 | the one obtained above... */ | |
1852 | size = bfd_get_section_size (sect); | |
1853 | if (size < sizeof (Elf_External_Note)) | |
1854 | { | |
1855 | bfd_set_error (bfd_error_invalid_operation); | |
1856 | free (contents); | |
1857 | return NULL; | |
1858 | } | |
1859 | ||
2425a30e NC |
1860 | enote = (Elf_External_Note *) contents; |
1861 | inote.type = H_GET_32 (abfd, enote->type); | |
1862 | inote.namesz = H_GET_32 (abfd, enote->namesz); | |
1863 | inote.namedata = enote->name; | |
1864 | inote.descsz = H_GET_32 (abfd, enote->descsz); | |
1865 | inote.descdata = inote.namedata + BFD_ALIGN (inote.namesz, 4); | |
1866 | /* FIXME: Should we check for extra notes in this section ? */ | |
49f4617b | 1867 | |
2425a30e NC |
1868 | if (inote.descsz == 0 |
1869 | || inote.type != NT_GNU_BUILD_ID | |
1870 | || inote.namesz != 4 /* sizeof "GNU" */ | |
cfd14a50 NC |
1871 | || strncmp (inote.namedata, "GNU", 4) != 0 |
1872 | || size < (12 + BFD_ALIGN (inote.namesz, 4) + inote.descsz)) | |
2425a30e NC |
1873 | { |
1874 | free (contents); | |
1875 | bfd_set_error (bfd_error_invalid_operation); | |
1876 | return NULL; | |
1877 | } | |
1878 | ||
1879 | build_id = bfd_alloc (abfd, sizeof (struct bfd_build_id) + inote.descsz); | |
1880 | if (build_id == NULL) | |
1881 | { | |
1882 | free (contents); | |
1883 | return NULL; | |
1884 | } | |
1885 | ||
1886 | build_id->size = inote.descsz; | |
1887 | memcpy (build_id->data, inote.descdata, inote.descsz); | |
1888 | abfd->build_id = build_id; | |
1889 | free (contents); | |
1890 | ||
1891 | return build_id; | |
1892 | } | |
1893 | ||
1894 | /* | |
1895 | INTERNAL_FUNCTION | |
1896 | get_build_id_name | |
1897 | ||
1898 | SYNOPSIS | |
49f4617b | 1899 | char * get_build_id_name (bfd *abfd, void *build_id_out_p) |
2425a30e NC |
1900 | |
1901 | DESCRIPTION | |
1902 | Searches @var{abfd} for a build-id, and then constructs a pathname | |
1903 | from it. The path is computed as .build-id/NN/NN+NN.debug where | |
1904 | NNNN+NN is the build-id value as a hexadecimal string. | |
1905 | ||
49f4617b | 1906 | RETURNS |
2425a30e NC |
1907 | Returns the constructed filename or NULL upon error. |
1908 | It is the caller's responsibility to free the memory used to hold the | |
1909 | filename. | |
49f4617b PA |
1910 | If a filename is returned then the @var{build_id_out_p} |
1911 | parameter (which points to a @code{struct bfd_build_id} | |
1912 | pointer) is set to a pointer to the build_id structure. | |
2425a30e NC |
1913 | */ |
1914 | ||
1915 | static char * | |
49f4617b | 1916 | get_build_id_name (bfd *abfd, void *build_id_out_p) |
2425a30e | 1917 | { |
49f4617b | 1918 | struct bfd_build_id **build_id_out = build_id_out_p; |
2425a30e NC |
1919 | struct bfd_build_id *build_id; |
1920 | char *name; | |
1921 | char *n; | |
1922 | bfd_size_type s; | |
1923 | bfd_byte *d; | |
1924 | ||
1925 | if (abfd == NULL || abfd->filename == NULL || build_id_out == NULL) | |
1926 | { | |
1927 | bfd_set_error (bfd_error_invalid_operation); | |
1928 | return NULL; | |
1929 | } | |
1930 | ||
1931 | build_id = get_build_id (abfd); | |
1932 | if (build_id == NULL) | |
1933 | return NULL; | |
1934 | ||
1935 | /* Compute the debug pathname corresponding to the build-id. */ | |
1936 | name = bfd_malloc (strlen (".build-id/") + build_id->size * 2 + 2 + strlen (".debug")); | |
1937 | if (name == NULL) | |
1938 | { | |
1939 | bfd_set_error (bfd_error_no_memory); | |
1940 | return NULL; | |
1941 | } | |
1942 | n = name; | |
1943 | d = build_id->data; | |
1944 | s = build_id->size; | |
1945 | ||
1946 | n += sprintf (n, ".build-id/"); | |
1947 | n += sprintf (n, "%02x", (unsigned) *d++); s--; | |
1948 | n += sprintf (n, "/"); | |
1949 | while (s--) | |
1950 | n += sprintf (n, "%02x", (unsigned) *d++); | |
1951 | n += sprintf (n, ".debug"); | |
1952 | ||
49f4617b | 1953 | *build_id_out = build_id; |
2425a30e NC |
1954 | return name; |
1955 | } | |
1956 | ||
1957 | /* | |
1958 | INTERNAL_FUNCTION | |
1959 | check_build_id_file | |
1960 | ||
1961 | SYNOPSIS | |
49f4617b | 1962 | bfd_boolean check_build_id_file (char *name, void *buildid_p); |
2425a30e NC |
1963 | |
1964 | DESCRIPTION | |
1965 | Checks to see if @var{name} is a readable file and if its build-id | |
1966 | matches @var{buildid}. | |
1967 | ||
49f4617b PA |
1968 | RETURNS |
1969 | Returns TRUE if the file exists, is readable, and contains a | |
1970 | build-id which matches the build-id pointed at by | |
1971 | @var{build_id_p} (which is really a @code{struct bfd_build_id **}). | |
2425a30e NC |
1972 | */ |
1973 | ||
1974 | static bfd_boolean | |
49f4617b | 1975 | check_build_id_file (const char *name, void *buildid_p) |
2425a30e NC |
1976 | { |
1977 | struct bfd_build_id *orig_build_id; | |
1978 | struct bfd_build_id *build_id; | |
1979 | bfd * file; | |
1980 | bfd_boolean result; | |
1981 | ||
1982 | BFD_ASSERT (name); | |
49f4617b | 1983 | BFD_ASSERT (buildid_p); |
2425a30e NC |
1984 | |
1985 | file = bfd_openr (name, NULL); | |
1986 | if (file == NULL) | |
1987 | return FALSE; | |
1988 | ||
1989 | /* If the file is an archive, process all of its elements. */ | |
1990 | if (! bfd_check_format (file, bfd_object)) | |
1991 | { | |
1992 | bfd_close (file); | |
1993 | return FALSE; | |
1994 | } | |
49f4617b | 1995 | |
2425a30e NC |
1996 | build_id = get_build_id (file); |
1997 | if (build_id == NULL) | |
1998 | { | |
1999 | bfd_close (file); | |
2000 | return FALSE; | |
2001 | } | |
2002 | ||
49f4617b | 2003 | orig_build_id = *(struct bfd_build_id **) buildid_p; |
2425a30e NC |
2004 | |
2005 | result = build_id->size == orig_build_id->size | |
2006 | && memcmp (build_id->data, orig_build_id->data, build_id->size) == 0; | |
2007 | ||
2008 | (void) bfd_close (file); | |
2009 | ||
2010 | return result; | |
2011 | } | |
2012 | ||
2013 | /* | |
2014 | FUNCTION | |
2015 | bfd_follow_build_id_debuglink | |
2016 | ||
2017 | SYNOPSIS | |
2018 | char *bfd_follow_build_id_debuglink (bfd *abfd, const char *dir); | |
2019 | ||
2020 | DESCRIPTION | |
2425a30e NC |
2021 | Takes @var{abfd} and searches it for a .note.gnu.build-id section. |
2022 | If this section is found, it extracts the value of the NT_GNU_BUILD_ID | |
2023 | note, which should be a hexadecimal value @var{NNNN+NN} (for | |
2024 | 32+ hex digits). It then searches the filesystem for a file named | |
2025 | @var{.build-id/NN/NN+NN.debug} in a set of standard locations, | |
2026 | including the directory tree rooted at @var{dir}. The filename | |
2027 | of the first matching file to be found is returned. A matching | |
2028 | file should contain a .note.gnu.build-id section with the same | |
2029 | @var{NNNN+NN} note as @var{abfd}, although this check is currently | |
2030 | not implemented. | |
2031 | ||
2032 | If @var{dir} is NULL, the search will take place starting at | |
2033 | the current directory. | |
2034 | ||
2035 | RETURNS | |
2036 | <<NULL>> on any errors or failure to locate the debug file, | |
2037 | otherwise a pointer to a heap-allocated string containing the | |
2038 | filename. The caller is responsible for freeing this string. | |
2039 | */ | |
2040 | ||
2041 | char * | |
2042 | bfd_follow_build_id_debuglink (bfd *abfd, const char *dir) | |
2043 | { | |
49f4617b PA |
2044 | struct bfd_build_id *build_id; |
2045 | ||
2425a30e NC |
2046 | return find_separate_debug_file (abfd, dir, FALSE, |
2047 | get_build_id_name, | |
49f4617b | 2048 | check_build_id_file, &build_id); |
2425a30e | 2049 | } |