1 : /*
2 : * BinReloc - a library for creating relocatable executables
3 : * Written by: Hongli Lai <h.lai@chello.nl>
4 : * http://autopackage.org/
5 : *
6 : * This source code is public domain. You can relicense this code
7 : * under whatever license you want.
8 : *
9 : * See http://autopackage.org/docs/binreloc/ for
10 : * more information and how to use this.
11 : */
12 :
13 : #ifndef __BINRELOC_C__
14 : #define __BINRELOC_C__
15 :
16 : # ifdef HAVE_CONFIG_H
17 : # include <config.h>
18 : # endif
19 :
20 : #ifdef ENABLE_BINRELOC
21 : #include <sys/types.h>
22 : #include <sys/stat.h>
23 : #include <unistd.h>
24 : #endif /* ENABLE_BINRELOC */
25 : #include <stdio.h>
26 : #include <stdlib.h>
27 : #include <limits.h>
28 : #include <string.h>
29 : #include "binreloc.h"
30 :
31 : #ifdef __cplusplus
32 : extern "C" {
33 : #endif /* __cplusplus */
34 :
35 :
36 :
37 : /** @internal
38 : * Find the canonical filename of the executable. Returns the filename
39 : * (which must be freed) or NULL on error. If the parameter 'error' is
40 : * not NULL, the error code will be stored there, if an error occured.
41 : */
42 : static char *
43 : _br_find_exe (BrInitError *error)
44 3 : {
45 : #ifndef ENABLE_BINRELOC
46 3 : if (error)
47 0 : *error = BR_INIT_ERROR_DISABLED;
48 3 : return NULL;
49 : #else
50 : char *path, *path2, *line, *result;
51 : size_t buf_size;
52 : ssize_t size;
53 : struct stat stat_buf;
54 : FILE *f;
55 :
56 : /* Read from /proc/self/exe (symlink) */
57 : if (sizeof (path) > SSIZE_MAX)
58 : buf_size = SSIZE_MAX - 1;
59 : else
60 : buf_size = PATH_MAX - 1;
61 : path = (char *) malloc (buf_size);
62 : if (path == NULL) {
63 : /* Cannot allocate memory. */
64 : if (error)
65 : *error = BR_INIT_ERROR_NOMEM;
66 : return NULL;
67 : }
68 : path2 = (char *) malloc (buf_size);
69 : if (path2 == NULL) {
70 : /* Cannot allocate memory. */
71 : if (error)
72 : *error = BR_INIT_ERROR_NOMEM;
73 : free (path);
74 : return NULL;
75 : }
76 :
77 : strncpy (path2, "/proc/self/exe", buf_size - 1);
78 :
79 : while (1) {
80 : int i;
81 :
82 : size = readlink (path2, path, buf_size - 1);
83 : if (size == -1) {
84 : /* Error. */
85 : free (path2);
86 : break;
87 : }
88 :
89 : /* readlink() success. */
90 : path[size] = '\0';
91 :
92 : /* Check whether the symlink's target is also a symlink.
93 : * We want to get the final target. */
94 : i = stat (path, &stat_buf);
95 : if (i == -1) {
96 : /* Error. */
97 : free (path2);
98 : break;
99 : }
100 :
101 : /* stat() success. */
102 : if (!S_ISLNK (stat_buf.st_mode)) {
103 : /* path is not a symlink. Done. */
104 : free (path2);
105 : return path;
106 : }
107 :
108 : /* path is a symlink. Continue loop and resolve this. */
109 : strncpy (path, path2, buf_size - 1);
110 : }
111 :
112 :
113 : /* readlink() or stat() failed; this can happen when the program is
114 : * running in Valgrind 2.2. Read from /proc/self/maps as fallback. */
115 :
116 : buf_size = PATH_MAX + 128;
117 : line = (char *) realloc (path, buf_size);
118 : if (line == NULL) {
119 : /* Cannot allocate memory. */
120 : free (path);
121 : if (error)
122 : *error = BR_INIT_ERROR_NOMEM;
123 : return NULL;
124 : }
125 :
126 : f = fopen ("/proc/self/maps", "r");
127 : if (f == NULL) {
128 : free (line);
129 : if (error)
130 : *error = BR_INIT_ERROR_OPEN_MAPS;
131 : return NULL;
132 : }
133 :
134 : /* The first entry should be the executable name. */
135 : result = fgets (line, (int) buf_size, f);
136 : if (result == NULL) {
137 : fclose (f);
138 : free (line);
139 : if (error)
140 : *error = BR_INIT_ERROR_READ_MAPS;
141 : return NULL;
142 : }
143 :
144 : /* Get rid of newline character. */
145 : buf_size = strlen (line);
146 : if (buf_size <= 0) {
147 : /* Huh? An empty string? */
148 : fclose (f);
149 : free (line);
150 : if (error)
151 : *error = BR_INIT_ERROR_INVALID_MAPS;
152 : return NULL;
153 : }
154 : if (line[buf_size - 1] == 10)
155 : line[buf_size - 1] = 0;
156 :
157 : /* Extract the filename; it is always an absolute path. */
158 : path = strchr (line, '/');
159 :
160 : /* Sanity check. */
161 : if (strstr (line, " r-xp ") == NULL || path == NULL) {
162 : fclose (f);
163 : free (line);
164 : if (error)
165 : *error = BR_INIT_ERROR_INVALID_MAPS;
166 : return NULL;
167 : }
168 :
169 : path = strdup (path);
170 : free (line);
171 : fclose (f);
172 : return path;
173 : #endif /* ENABLE_BINRELOC */
174 : }
175 :
176 :
177 : /** @internal
178 : * Find the canonical filename of the executable which owns symbol.
179 : * Returns a filename which must be freed, or NULL on error.
180 : */
181 : static char *
182 : _br_find_exe_for_symbol (const void *symbol, BrInitError *error)
183 0 : {
184 : #ifndef ENABLE_BINRELOC
185 : (void)symbol;
186 0 : if (error)
187 0 : *error = BR_INIT_ERROR_DISABLED;
188 0 : return (char *) NULL;
189 : #else
190 : #define SIZE PATH_MAX + 100
191 : FILE *f;
192 : size_t address_string_len;
193 : char *address_string, line[SIZE], *found;
194 :
195 : (void)error;
196 : if (symbol == NULL)
197 : return (char *) NULL;
198 :
199 : f = fopen ("/proc/self/maps", "r");
200 : if (f == NULL)
201 : return (char *) NULL;
202 :
203 : address_string_len = 4;
204 : address_string = (char *) malloc (address_string_len);
205 : found = (char *) NULL;
206 :
207 : while (!feof (f)) {
208 : char *start_addr, *end_addr, *end_addr_end, *file;
209 : void *start_addr_p, *end_addr_p;
210 : size_t len;
211 :
212 : if (fgets (line, SIZE, f) == NULL)
213 : break;
214 :
215 : /* Sanity check. */
216 : if (strstr (line, " r-xp ") == NULL || strchr (line, '/') == NULL)
217 : continue;
218 :
219 : /* Parse line. */
220 : start_addr = line;
221 : end_addr = strchr (line, '-');
222 : file = strchr (line, '/');
223 :
224 : /* More sanity check. */
225 : if (!(file > end_addr && end_addr != NULL && end_addr[0] == '-'))
226 : continue;
227 :
228 : end_addr[0] = '\0';
229 : end_addr++;
230 : end_addr_end = strchr (end_addr, ' ');
231 : if (end_addr_end == NULL)
232 : continue;
233 :
234 : end_addr_end[0] = '\0';
235 : len = strlen (file);
236 : if (len == 0)
237 : continue;
238 : if (file[len - 1] == '\n')
239 : file[len - 1] = '\0';
240 :
241 : /* Get rid of "(deleted)" from the filename. */
242 : len = strlen (file);
243 : if (len > 10 && strcmp (file + len - 10, " (deleted)") == 0)
244 : file[len - 10] = '\0';
245 :
246 : /* I don't know whether this can happen but better safe than sorry. */
247 : len = strlen (start_addr);
248 : if (len != strlen (end_addr))
249 : continue;
250 :
251 :
252 : /* Transform the addresses into a string in the form of 0xdeadbeef,
253 : * then transform that into a pointer. */
254 : if (address_string_len < len + 3) {
255 : address_string_len = len + 3;
256 : address_string = (char *) realloc (address_string, address_string_len);
257 : }
258 :
259 : memcpy (address_string, "0x", 2);
260 : memcpy (address_string + 2, start_addr, len);
261 : address_string[2 + len] = '\0';
262 : sscanf (address_string, "%p", &start_addr_p);
263 :
264 : memcpy (address_string, "0x", 2);
265 : memcpy (address_string + 2, end_addr, len);
266 : address_string[2 + len] = '\0';
267 : sscanf (address_string, "%p", &end_addr_p);
268 :
269 :
270 : if (symbol >= start_addr_p && symbol < end_addr_p) {
271 : found = file;
272 : break;
273 : }
274 : }
275 :
276 : free (address_string);
277 : fclose (f);
278 :
279 : if (found == NULL)
280 : return (char *) NULL;
281 : else
282 : return strdup (found);
283 : #endif /* ENABLE_BINRELOC */
284 : }
285 :
286 :
287 : #ifndef BINRELOC_RUNNING_DOXYGEN
288 : #undef NULL
289 : #define NULL ((void *) 0) /* typecasted as char* for C++ type safeness */
290 : #endif
291 :
292 : static char *exe = (char *) NULL;
293 :
294 :
295 : /** Initialize the BinReloc library (for applications).
296 : *
297 : * This function must be called before using any other BinReloc functions.
298 : * It attempts to locate the application's canonical filename.
299 : *
300 : * @note If you want to use BinReloc for a library, then you should call
301 : * br_init_lib() instead.
302 : *
303 : * @param error If BinReloc failed to initialize, then the error code will
304 : * be stored in this variable. Set to NULL if you want to
305 : * ignore this. See #BrInitError for a list of error codes.
306 : *
307 : * @returns 1 on success, 0 if BinReloc failed to initialize.
308 : */
309 : int
310 : br_init (BrInitError *error)
311 3 : {
312 3 : exe = _br_find_exe (error);
313 3 : return exe != NULL;
314 : }
315 :
316 :
317 : /** Initialize the BinReloc library (for libraries).
318 : *
319 : * This function must be called before using any other BinReloc functions.
320 : * It attempts to locate the calling library's canonical filename.
321 : *
322 : * @note The BinReloc source code MUST be included in your library, or this
323 : * function won't work correctly.
324 : *
325 : * @param error If BinReloc failed to initialize, then the error code will
326 : * be stored in this variable. Set to NULL if you want to
327 : * ignore this. See #BrInitError for a list of error codes.
328 : *
329 : * @returns 1 on success, 0 if a filename cannot be found.
330 : */
331 : int
332 : br_init_lib (BrInitError *error)
333 0 : {
334 0 : exe = _br_find_exe_for_symbol ((const void *) "", error);
335 0 : return exe != NULL;
336 : }
337 :
338 :
339 : /** Find the canonical filename of the current application.
340 : *
341 : * @param default_exe A default filename which will be used as fallback.
342 : * @returns A string containing the application's canonical filename,
343 : * which must be freed when no longer necessary. If BinReloc is
344 : * not initialized, or if br_init() failed, then a copy of
345 : * default_exe will be returned. If default_exe is NULL, then
346 : * NULL will be returned.
347 : */
348 : char *
349 : br_find_exe (const char *default_exe)
350 0 : {
351 0 : if (exe == (char *) NULL) {
352 : /* BinReloc is not initialized. */
353 0 : if (default_exe != (const char *) NULL)
354 0 : return strdup (default_exe);
355 : else
356 0 : return (char *) NULL;
357 : }
358 0 : return strdup (exe);
359 : }
360 :
361 :
362 : /** Locate the directory in which the current application is installed.
363 : *
364 : * The prefix is generated by the following pseudo-code evaluation:
365 : * \code
366 : * dirname(exename)
367 : * \endcode
368 : *
369 : * @param default_dir A default directory which will used as fallback.
370 : * @return A string containing the directory, which must be freed when no
371 : * longer necessary. If BinReloc is not initialized, or if the
372 : * initialization function failed, then a copy of default_dir
373 : * will be returned. If default_dir is NULL, then NULL will be
374 : * returned.
375 : */
376 : char *
377 : br_find_exe_dir (const char *default_dir)
378 0 : {
379 0 : if (exe == NULL) {
380 : /* BinReloc not initialized. */
381 0 : if (default_dir != NULL)
382 0 : return strdup (default_dir);
383 : else
384 0 : return NULL;
385 : }
386 :
387 0 : return br_dirname (exe);
388 : }
389 :
390 :
391 : /** Locate the prefix in which the current application is installed.
392 : *
393 : * The prefix is generated by the following pseudo-code evaluation:
394 : * \code
395 : * dirname(dirname(exename))
396 : * \endcode
397 : *
398 : * @param default_prefix A default prefix which will used as fallback.
399 : * @return A string containing the prefix, which must be freed when no
400 : * longer necessary. If BinReloc is not initialized, or if
401 : * the initialization function failed, then a copy of default_prefix
402 : * will be returned. If default_prefix is NULL, then NULL will be returned.
403 : */
404 : char *
405 : br_find_prefix (const char *default_prefix)
406 3 : {
407 : char *dir1, *dir2;
408 :
409 3 : if (exe == (char *) NULL) {
410 : /* BinReloc not initialized. */
411 3 : if (default_prefix != (const char *) NULL)
412 0 : return strdup (default_prefix);
413 : else
414 3 : return (char *) NULL;
415 : }
416 :
417 0 : dir1 = br_dirname (exe);
418 0 : dir2 = br_dirname (dir1);
419 0 : free (dir1);
420 0 : return dir2;
421 : }
422 :
423 :
424 : /** Locate the application's binary folder.
425 : *
426 : * The path is generated by the following pseudo-code evaluation:
427 : * \code
428 : * prefix + "/bin"
429 : * \endcode
430 : *
431 : * @param default_bin_dir A default path which will used as fallback.
432 : * @return A string containing the bin folder's path, which must be freed when
433 : * no longer necessary. If BinReloc is not initialized, or if
434 : * the initialization function failed, then a copy of default_bin_dir will
435 : * be returned. If default_bin_dir is NULL, then NULL will be returned.
436 : */
437 : char *
438 : br_find_bin_dir (const char *default_bin_dir)
439 0 : {
440 : char *prefix, *dir;
441 :
442 0 : prefix = br_find_prefix ((const char *) NULL);
443 0 : if (prefix == (char *) NULL) {
444 : /* BinReloc not initialized. */
445 0 : if (default_bin_dir != (const char *) NULL)
446 0 : return strdup (default_bin_dir);
447 : else
448 0 : return (char *) NULL;
449 : }
450 :
451 0 : dir = br_build_path (prefix, "bin");
452 0 : free (prefix);
453 0 : return dir;
454 : }
455 :
456 :
457 : /** Locate the application's superuser binary folder.
458 : *
459 : * The path is generated by the following pseudo-code evaluation:
460 : * \code
461 : * prefix + "/sbin"
462 : * \endcode
463 : *
464 : * @param default_sbin_dir A default path which will used as fallback.
465 : * @return A string containing the sbin folder's path, which must be freed when
466 : * no longer necessary. If BinReloc is not initialized, or if the
467 : * initialization function failed, then a copy of default_sbin_dir will
468 : * be returned. If default_bin_dir is NULL, then NULL will be returned.
469 : */
470 : char *
471 : br_find_sbin_dir (const char *default_sbin_dir)
472 0 : {
473 : char *prefix, *dir;
474 :
475 0 : prefix = br_find_prefix ((const char *) NULL);
476 0 : if (prefix == (char *) NULL) {
477 : /* BinReloc not initialized. */
478 0 : if (default_sbin_dir != (const char *) NULL)
479 0 : return strdup (default_sbin_dir);
480 : else
481 0 : return (char *) NULL;
482 : }
483 :
484 0 : dir = br_build_path (prefix, "sbin");
485 0 : free (prefix);
486 0 : return dir;
487 : }
488 :
489 :
490 : /** Locate the application's data folder.
491 : *
492 : * The path is generated by the following pseudo-code evaluation:
493 : * \code
494 : * prefix + "/share"
495 : * \endcode
496 : *
497 : * @param default_data_dir A default path which will used as fallback.
498 : * @return A string containing the data folder's path, which must be freed when
499 : * no longer necessary. If BinReloc is not initialized, or if the
500 : * initialization function failed, then a copy of default_data_dir
501 : * will be returned. If default_data_dir is NULL, then NULL will be
502 : * returned.
503 : */
504 : char *
505 : br_find_data_dir (const char *default_data_dir)
506 3 : {
507 : char *prefix, *dir;
508 :
509 3 : prefix = br_find_prefix ((const char *) NULL);
510 3 : if (prefix == (char *) NULL) {
511 : /* BinReloc not initialized. */
512 3 : if (default_data_dir != (const char *) NULL)
513 0 : return strdup (default_data_dir);
514 : else
515 3 : return (char *) NULL;
516 : }
517 :
518 0 : dir = br_build_path (prefix, "share");
519 0 : free (prefix);
520 0 : return dir;
521 : }
522 :
523 :
524 : /** Locate the application's localization folder.
525 : *
526 : * The path is generated by the following pseudo-code evaluation:
527 : * \code
528 : * prefix + "/share/locale"
529 : * \endcode
530 : *
531 : * @param default_locale_dir A default path which will used as fallback.
532 : * @return A string containing the localization folder's path, which must be freed when
533 : * no longer necessary. If BinReloc is not initialized, or if the
534 : * initialization function failed, then a copy of default_locale_dir will be returned.
535 : * If default_locale_dir is NULL, then NULL will be returned.
536 : */
537 : char *
538 : br_find_locale_dir (const char *default_locale_dir)
539 3 : {
540 : char *data_dir, *dir;
541 :
542 3 : data_dir = br_find_data_dir ((const char *) NULL);
543 3 : if (data_dir == (char *) NULL) {
544 : /* BinReloc not initialized. */
545 3 : if (default_locale_dir != (const char *) NULL)
546 3 : return strdup (default_locale_dir);
547 : else
548 0 : return (char *) NULL;
549 : }
550 :
551 0 : dir = br_build_path (data_dir, "locale");
552 0 : free (data_dir);
553 0 : return dir;
554 : }
555 :
556 :
557 : /** Locate the application's library folder.
558 : *
559 : * The path is generated by the following pseudo-code evaluation:
560 : * \code
561 : * prefix + "/lib"
562 : * \endcode
563 : *
564 : * @param default_lib_dir A default path which will used as fallback.
565 : * @return A string containing the library folder's path, which must be freed when
566 : * no longer necessary. If BinReloc is not initialized, or if the initialization
567 : * function failed, then a copy of default_lib_dir will be returned.
568 : * If default_lib_dir is NULL, then NULL will be returned.
569 : */
570 : char *
571 : br_find_lib_dir (const char *default_lib_dir)
572 0 : {
573 : char *prefix, *dir;
574 :
575 0 : prefix = br_find_prefix ((const char *) NULL);
576 0 : if (prefix == (char *) NULL) {
577 : /* BinReloc not initialized. */
578 0 : if (default_lib_dir != (const char *) NULL)
579 0 : return strdup (default_lib_dir);
580 : else
581 0 : return (char *) NULL;
582 : }
583 :
584 0 : dir = br_build_path (prefix, "lib");
585 0 : free (prefix);
586 0 : return dir;
587 : }
588 :
589 :
590 : /** Locate the application's libexec folder.
591 : *
592 : * The path is generated by the following pseudo-code evaluation:
593 : * \code
594 : * prefix + "/libexec"
595 : * \endcode
596 : *
597 : * @param default_libexec_dir A default path which will used as fallback.
598 : * @return A string containing the libexec folder's path, which must be freed when
599 : * no longer necessary. If BinReloc is not initialized, or if the initialization
600 : * function failed, then a copy of default_libexec_dir will be returned.
601 : * If default_libexec_dir is NULL, then NULL will be returned.
602 : */
603 : char *
604 : br_find_libexec_dir (const char *default_libexec_dir)
605 0 : {
606 : char *prefix, *dir;
607 :
608 0 : prefix = br_find_prefix ((const char *) NULL);
609 0 : if (prefix == (char *) NULL) {
610 : /* BinReloc not initialized. */
611 0 : if (default_libexec_dir != (const char *) NULL)
612 0 : return strdup (default_libexec_dir);
613 : else
614 0 : return (char *) NULL;
615 : }
616 :
617 0 : dir = br_build_path (prefix, "libexec");
618 0 : free (prefix);
619 0 : return dir;
620 : }
621 :
622 :
623 : /** Locate the application's configuration files folder.
624 : *
625 : * The path is generated by the following pseudo-code evaluation:
626 : * \code
627 : * prefix + "/etc"
628 : * \endcode
629 : *
630 : * @param default_etc_dir A default path which will used as fallback.
631 : * @return A string containing the etc folder's path, which must be freed when
632 : * no longer necessary. If BinReloc is not initialized, or if the initialization
633 : * function failed, then a copy of default_etc_dir will be returned.
634 : * If default_etc_dir is NULL, then NULL will be returned.
635 : */
636 : char *
637 : br_find_etc_dir (const char *default_etc_dir)
638 0 : {
639 : char *prefix, *dir;
640 :
641 0 : prefix = br_find_prefix ((const char *) NULL);
642 0 : if (prefix == (char *) NULL) {
643 : /* BinReloc not initialized. */
644 0 : if (default_etc_dir != (const char *) NULL)
645 0 : return strdup (default_etc_dir);
646 : else
647 0 : return (char *) NULL;
648 : }
649 :
650 0 : dir = br_build_path (prefix, "etc");
651 0 : free (prefix);
652 0 : return dir;
653 : }
654 :
655 :
656 : /***********************
657 : * Utility functions
658 : ***********************/
659 :
660 : /** Concatenate str1 and str2 to a newly allocated string.
661 : *
662 : * @param str1 A string.
663 : * @param str2 Another string.
664 : * @returns A newly-allocated string. This string should be freed when no longer needed.
665 : */
666 : char *
667 : br_strcat (const char *str1, const char *str2)
668 0 : {
669 : char *result;
670 : size_t len1, len2;
671 :
672 0 : if (str1 == NULL)
673 0 : str1 = "";
674 0 : if (str2 == NULL)
675 0 : str2 = "";
676 :
677 0 : len1 = strlen (str1);
678 0 : len2 = strlen (str2);
679 :
680 0 : result = (char *) malloc (len1 + len2 + 1);
681 0 : memcpy (result, str1, len1);
682 0 : memcpy (result + len1, str2, len2);
683 0 : result[len1 + len2] = '\0';
684 :
685 0 : return result;
686 : }
687 :
688 :
689 : char *
690 : br_build_path (const char *dir, const char *file)
691 0 : {
692 : char *dir2, *result;
693 : size_t len;
694 0 : int must_free = 0;
695 :
696 0 : len = strlen (dir);
697 0 : if (len > 0 && dir[len - 1] != '/') {
698 0 : dir2 = br_strcat (dir, "/");
699 0 : must_free = 1;
700 : } else
701 0 : dir2 = (char *) dir;
702 :
703 0 : result = br_strcat (dir2, file);
704 0 : if (must_free)
705 0 : free (dir2);
706 0 : return result;
707 : }
708 :
709 :
710 : /* Emulates glibc's strndup() */
711 : static char *
712 : br_strndup (const char *str, size_t size)
713 0 : {
714 0 : char *result = (char *) NULL;
715 : size_t len;
716 :
717 0 : if (str == (const char *) NULL)
718 0 : return (char *) NULL;
719 :
720 0 : len = strlen (str);
721 0 : if (len == 0)
722 0 : return strdup ("");
723 0 : if (size > len)
724 0 : size = len;
725 :
726 0 : result = (char *) malloc (len + 1);
727 0 : memcpy (result, str, size);
728 0 : result[size] = '\0';
729 0 : return result;
730 : }
731 :
732 :
733 : /** Extracts the directory component of a path.
734 : *
735 : * Similar to g_dirname() or the dirname commandline application.
736 : *
737 : * Example:
738 : * \code
739 : * br_dirname ("/usr/local/foobar"); --> Returns: "/usr/local"
740 : * \endcode
741 : *
742 : * @param path A path.
743 : * @returns A directory name. This string should be freed when no longer needed.
744 : */
745 : char *
746 : br_dirname (const char *path)
747 0 : {
748 : char *end, *result;
749 :
750 0 : if (path == (const char *) NULL)
751 0 : return (char *) NULL;
752 :
753 0 : end = strrchr (path, '/');
754 0 : if (end == (const char *) NULL)
755 0 : return strdup (".");
756 :
757 0 : while (end > path && *end == '/')
758 0 : end--;
759 0 : result = br_strndup (path, end - path + 1);
760 0 : if (result[0] == 0) {
761 0 : free (result);
762 0 : return strdup ("/");
763 : } else
764 0 : return result;
765 : }
766 :
767 :
768 : #ifdef __cplusplus
769 : }
770 : #endif /* __cplusplus */
771 :
772 : #endif /* __BINRELOC_C__ */
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