Commit | Line | Data |
---|---|---|
d9898ee8 | 1 | /* ltdl.c -- system independent dlopen wrapper |
d9898ee8 | 2 | |
8d138742 CE |
3 | Copyright (C) 1998, 1999, 2000, 2004, 2005, 2006, |
4 | 2007, 2008 Free Software Foundation, Inc. | |
5 | Written by Thomas Tanner, 1998 | |
6 | ||
7 | NOTE: The canonical source of this file is maintained with the | |
8 | GNU Libtool package. Report bugs to bug-libtool@gnu.org. | |
9 | ||
10 | GNU Libltdl is free software; you can redistribute it and/or | |
d9898ee8 | 11 | modify it under the terms of the GNU Lesser General Public |
12 | License as published by the Free Software Foundation; either | |
13 | version 2 of the License, or (at your option) any later version. | |
14 | ||
15 | As a special exception to the GNU Lesser General Public License, | |
16 | if you distribute this file as part of a program or library that | |
8d138742 CE |
17 | is built using GNU Libtool, you may include this file under the |
18 | same distribution terms that you use for the rest of that program. | |
d9898ee8 | 19 | |
8d138742 | 20 | GNU Libltdl is distributed in the hope that it will be useful, |
d9898ee8 | 21 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
8d138742 CE |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | GNU Lesser General Public License for more details. | |
d9898ee8 | 24 | |
25 | You should have received a copy of the GNU Lesser General Public | |
8d138742 CE |
26 | License along with GNU Libltdl; see the file COPYING.LIB. If not, a |
27 | copy can be downloaded from http://www.gnu.org/licenses/lgpl.html, | |
28 | or obtained by writing to the Free Software Foundation, Inc., | |
29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
d9898ee8 | 30 | */ |
31 | ||
8d138742 CE |
32 | #include "lt__private.h" |
33 | #include "lt_system.h" | |
34 | #include "lt_dlloader.h" | |
d9898ee8 | 35 | |
36 | ||
d9898ee8 | 37 | /* --- MANIFEST CONSTANTS --- */ |
38 | ||
39 | ||
40 | /* Standard libltdl search path environment variable name */ | |
41 | #undef LTDL_SEARCHPATH_VAR | |
42 | #define LTDL_SEARCHPATH_VAR "LTDL_LIBRARY_PATH" | |
43 | ||
44 | /* Standard libtool archive file extension. */ | |
8d138742 CE |
45 | #undef LT_ARCHIVE_EXT |
46 | #define LT_ARCHIVE_EXT ".la" | |
d9898ee8 | 47 | |
48 | /* max. filename length */ | |
8d138742 | 49 | #if !defined(LT_FILENAME_MAX) |
d9898ee8 | 50 | # define LT_FILENAME_MAX 1024 |
51 | #endif | |
52 | ||
8d138742 CE |
53 | #if !defined(LT_LIBEXT) |
54 | # define LT_LIBEXT "a" | |
55 | #endif | |
56 | ||
d9898ee8 | 57 | /* This is the maximum symbol size that won't require malloc/free */ |
58 | #undef LT_SYMBOL_LENGTH | |
59 | #define LT_SYMBOL_LENGTH 128 | |
60 | ||
61 | /* This accounts for the _LTX_ separator */ | |
62 | #undef LT_SYMBOL_OVERHEAD | |
63 | #define LT_SYMBOL_OVERHEAD 5 | |
64 | ||
8d138742 CE |
65 | /* Various boolean flags can be stored in the flags field of an |
66 | lt_dlhandle... */ | |
67 | #define LT_DLIS_RESIDENT(handle) ((handle)->info.is_resident) | |
68 | #define LT_DLIS_SYMGLOBAL(handle) ((handle)->info.is_symglobal) | |
69 | #define LT_DLIS_SYMLOCAL(handle) ((handle)->info.is_symlocal) | |
d9898ee8 | 70 | |
71 | ||
8d138742 CE |
72 | static const char objdir[] = LT_OBJDIR; |
73 | static const char archive_ext[] = LT_ARCHIVE_EXT; | |
74 | static const char libext[] = LT_LIBEXT; | |
75 | #if defined(LT_MODULE_EXT) | |
76 | static const char shlib_ext[] = LT_MODULE_EXT; | |
d9898ee8 | 77 | #endif |
8d138742 CE |
78 | #if defined(LT_DLSEARCH_PATH) |
79 | static const char sys_dlsearch_path[] = LT_DLSEARCH_PATH; | |
d9898ee8 | 80 | #endif |
81 | ||
d9898ee8 | 82 | |
d9898ee8 | 83 | |
8d138742 CE |
84 | \f |
85 | /* --- DYNAMIC MODULE LOADING --- */ | |
d9898ee8 | 86 | |
d9898ee8 | 87 | |
8d138742 CE |
88 | /* The type of a function used at each iteration of foreach_dirinpath(). */ |
89 | typedef int foreach_callback_func (char *filename, void *data1, | |
90 | void *data2); | |
91 | /* foreachfile_callback itself calls a function of this type: */ | |
92 | typedef int file_worker_func (const char *filename, void *data); | |
93 | ||
94 | ||
95 | static int foreach_dirinpath (const char *search_path, | |
96 | const char *base_name, | |
97 | foreach_callback_func *func, | |
98 | void *data1, void *data2); | |
99 | static int find_file_callback (char *filename, void *data1, | |
100 | void *data2); | |
101 | static int find_handle_callback (char *filename, void *data, | |
102 | void *ignored); | |
103 | static int foreachfile_callback (char *filename, void *data1, | |
104 | void *data2); | |
105 | ||
106 | ||
107 | static int canonicalize_path (const char *path, char **pcanonical); | |
108 | static int argzize_path (const char *path, | |
109 | char **pargz, size_t *pargz_len); | |
110 | static FILE *find_file (const char *search_path, | |
111 | const char *base_name, char **pdir); | |
112 | static lt_dlhandle *find_handle (const char *search_path, | |
113 | const char *base_name, | |
114 | lt_dlhandle *handle, | |
115 | lt_dladvise advise); | |
116 | static int find_module (lt_dlhandle *handle, const char *dir, | |
117 | const char *libdir, const char *dlname, | |
118 | const char *old_name, int installed, | |
119 | lt_dladvise advise); | |
120 | static int has_library_ext (const char *filename); | |
121 | static int load_deplibs (lt_dlhandle handle, char *deplibs); | |
122 | static int trim (char **dest, const char *str); | |
123 | static int try_dlopen (lt_dlhandle *handle, | |
124 | const char *filename, const char *ext, | |
125 | lt_dladvise advise); | |
126 | static int tryall_dlopen (lt_dlhandle *handle, | |
127 | const char *filename, | |
128 | lt_dladvise padvise, | |
129 | const lt_dlvtable *vtable); | |
130 | static int unload_deplibs (lt_dlhandle handle); | |
131 | static int lt_argz_insert (char **pargz, size_t *pargz_len, | |
132 | char *before, const char *entry); | |
133 | static int lt_argz_insertinorder (char **pargz, size_t *pargz_len, | |
134 | const char *entry); | |
135 | static int lt_argz_insertdir (char **pargz, size_t *pargz_len, | |
136 | const char *dirnam, struct dirent *dp); | |
137 | static int lt_dlpath_insertdir (char **ppath, char *before, | |
138 | const char *dir); | |
139 | static int list_files_by_dir (const char *dirnam, | |
140 | char **pargz, size_t *pargz_len); | |
141 | static int file_not_found (void); | |
142 | ||
143 | #ifdef HAVE_LIBDLLOADER | |
144 | static int loader_init_callback (lt_dlhandle handle); | |
145 | #endif /* HAVE_LIBDLLOADER */ | |
146 | ||
147 | static int loader_init (lt_get_vtable *vtable_func, | |
148 | lt_user_data data); | |
d9898ee8 | 149 | |
8d138742 CE |
150 | static char *user_search_path= 0; |
151 | static lt_dlhandle handles = 0; | |
152 | static int initialized = 0; | |
d9898ee8 | 153 | |
8d138742 CE |
154 | /* Our memory failure callback sets the error message to be passed back |
155 | up to the client, so we must be careful to return from mallocation | |
156 | callers if allocation fails (as this callback returns!!). */ | |
157 | void | |
158 | lt__alloc_die_callback (void) | |
d9898ee8 | 159 | { |
8d138742 | 160 | LT__SETERROR (NO_MEMORY); |
d9898ee8 | 161 | } |
162 | ||
8d138742 CE |
163 | #ifdef HAVE_LIBDLLOADER |
164 | /* This function is called to initialise each preloaded module loader, | |
165 | and hook it into the list of loaders to be used when attempting to | |
166 | dlopen an application module. */ | |
167 | static int | |
168 | loader_init_callback (lt_dlhandle handle) | |
d9898ee8 | 169 | { |
8d138742 CE |
170 | lt_get_vtable *vtable_func = (lt_get_vtable *) lt_dlsym (handle, "get_vtable"); |
171 | return loader_init (vtable_func, 0); | |
d9898ee8 | 172 | } |
8d138742 | 173 | #endif /* HAVE_LIBDLLOADER */ |
d9898ee8 | 174 | |
8d138742 CE |
175 | static int |
176 | loader_init (lt_get_vtable *vtable_func, lt_user_data data) | |
d9898ee8 | 177 | { |
8d138742 CE |
178 | const lt_dlvtable *vtable = 0; |
179 | int errors = 0; | |
d9898ee8 | 180 | |
8d138742 | 181 | if (vtable_func) |
d9898ee8 | 182 | { |
8d138742 | 183 | vtable = (*vtable_func) (data); |
d9898ee8 | 184 | } |
d9898ee8 | 185 | |
8d138742 CE |
186 | /* lt_dlloader_add will LT__SETERROR if it fails. */ |
187 | errors += lt_dlloader_add (vtable); | |
d9898ee8 | 188 | |
8d138742 | 189 | assert (errors || vtable); |
d9898ee8 | 190 | |
8d138742 | 191 | if ((!errors) && vtable->dlloader_init) |
d9898ee8 | 192 | { |
8d138742 | 193 | if ((*vtable->dlloader_init) (vtable->dlloader_data)) |
d9898ee8 | 194 | { |
8d138742 CE |
195 | LT__SETERROR (INIT_LOADER); |
196 | ++errors; | |
d9898ee8 | 197 | } |
d9898ee8 | 198 | } |
d9898ee8 | 199 | |
8d138742 | 200 | return errors; |
d9898ee8 | 201 | } |
d9898ee8 | 202 | |
8d138742 CE |
203 | /* Bootstrap the loader loading with the preopening loader. */ |
204 | #define get_vtable preopen_LTX_get_vtable | |
205 | #define preloaded_symbols LT_CONC3(lt_, LTDLOPEN, _LTX_preloaded_symbols) | |
d9898ee8 | 206 | |
8d138742 CE |
207 | LT_BEGIN_C_DECLS |
208 | LT_SCOPE const lt_dlvtable * get_vtable (lt_user_data data); | |
209 | LT_END_C_DECLS | |
210 | #ifdef HAVE_LIBDLLOADER | |
211 | extern lt_dlsymlist preloaded_symbols; | |
212 | #endif | |
d9898ee8 | 213 | |
8d138742 CE |
214 | /* Initialize libltdl. */ |
215 | int | |
216 | lt_dlinit (void) | |
d9898ee8 | 217 | { |
8d138742 | 218 | int errors = 0; |
d9898ee8 | 219 | |
8d138742 CE |
220 | /* Initialize only at first call. */ |
221 | if (++initialized == 1) | |
d9898ee8 | 222 | { |
8d138742 CE |
223 | lt__alloc_die = lt__alloc_die_callback; |
224 | handles = 0; | |
225 | user_search_path = 0; /* empty search path */ | |
d9898ee8 | 226 | |
8d138742 CE |
227 | /* First set up the statically loaded preload module loader, so |
228 | we can use it to preopen the other loaders we linked in at | |
229 | compile time. */ | |
230 | errors += loader_init (get_vtable, 0); | |
d9898ee8 | 231 | |
8d138742 CE |
232 | /* Now open all the preloaded module loaders, so the application |
233 | can use _them_ to lt_dlopen its own modules. */ | |
234 | #ifdef HAVE_LIBDLLOADER | |
235 | if (!errors) | |
d9898ee8 | 236 | { |
8d138742 | 237 | errors += lt_dlpreload (&preloaded_symbols); |
d9898ee8 | 238 | } |
d9898ee8 | 239 | |
8d138742 | 240 | if (!errors) |
d9898ee8 | 241 | { |
8d138742 | 242 | errors += lt_dlpreload_open (LT_STR(LTDLOPEN), loader_init_callback); |
d9898ee8 | 243 | } |
8d138742 | 244 | #endif /* HAVE_LIBDLLOADER */ |
d9898ee8 | 245 | } |
d9898ee8 | 246 | |
8d138742 CE |
247 | #ifdef LT_DEBUG_LOADERS |
248 | lt_dlloader_dump(); | |
d9898ee8 | 249 | #endif |
d9898ee8 | 250 | |
251 | return errors; | |
252 | } | |
253 | ||
254 | int | |
8d138742 | 255 | lt_dlexit (void) |
d9898ee8 | 256 | { |
257 | /* shut down libltdl */ | |
8d138742 CE |
258 | lt_dlloader *loader = 0; |
259 | lt_dlhandle handle = handles; | |
d9898ee8 | 260 | int errors = 0; |
261 | ||
d9898ee8 | 262 | if (!initialized) |
263 | { | |
8d138742 | 264 | LT__SETERROR (SHUTDOWN); |
d9898ee8 | 265 | ++errors; |
266 | goto done; | |
267 | } | |
268 | ||
269 | /* shut down only at last call. */ | |
270 | if (--initialized == 0) | |
271 | { | |
272 | int level; | |
273 | ||
274 | while (handles && LT_DLIS_RESIDENT (handles)) | |
275 | { | |
276 | handles = handles->next; | |
277 | } | |
278 | ||
279 | /* close all modules */ | |
8d138742 | 280 | for (level = 1; handle; ++level) |
d9898ee8 | 281 | { |
282 | lt_dlhandle cur = handles; | |
283 | int saw_nonresident = 0; | |
284 | ||
285 | while (cur) | |
286 | { | |
287 | lt_dlhandle tmp = cur; | |
288 | cur = cur->next; | |
289 | if (!LT_DLIS_RESIDENT (tmp)) | |
d9898ee8 | 290 | { |
8d138742 CE |
291 | saw_nonresident = 1; |
292 | if (tmp->info.ref_count <= level) | |
ac40fd9e | 293 | { |
8d138742 CE |
294 | if (lt_dlclose (tmp)) |
295 | { | |
296 | ++errors; | |
297 | } | |
298 | /* Make sure that the handle pointed to by 'cur' still exists. | |
299 | lt_dlclose recursively closes dependent libraries which removes | |
300 | them from the linked list. One of these might be the one | |
301 | pointed to by 'cur'. */ | |
302 | if (cur) | |
303 | { | |
304 | for (tmp = handles; tmp; tmp = tmp->next) | |
305 | if (tmp == cur) | |
306 | break; | |
307 | if (! tmp) | |
308 | cur = handles; | |
309 | } | |
ac40fd9e | 310 | } |
d9898ee8 | 311 | } |
312 | } | |
313 | /* done if only resident modules are left */ | |
314 | if (!saw_nonresident) | |
315 | break; | |
316 | } | |
317 | ||
8d138742 CE |
318 | /* When removing loaders, we can only find out failure by testing |
319 | the error string, so avoid a spurious one from an earlier | |
320 | failed command. */ | |
321 | if (!errors) | |
322 | LT__SETERRORSTR (0); | |
323 | ||
d9898ee8 | 324 | /* close all loaders */ |
8d138742 | 325 | for (loader = (lt_dlloader *) lt_dlloader_next (NULL); loader;) |
d9898ee8 | 326 | { |
8d138742 CE |
327 | lt_dlloader *next = (lt_dlloader *) lt_dlloader_next (loader); |
328 | lt_dlvtable *vtable = (lt_dlvtable *) lt_dlloader_get (loader); | |
329 | ||
330 | if ((vtable = lt_dlloader_remove ((char *) vtable->name))) | |
d9898ee8 | 331 | { |
8d138742 CE |
332 | FREE (vtable); |
333 | } | |
334 | else | |
335 | { | |
336 | /* ignore errors due to resident modules */ | |
337 | const char *err; | |
338 | LT__GETERROR (err); | |
339 | if (err) | |
340 | ++errors; | |
d9898ee8 | 341 | } |
342 | ||
8d138742 | 343 | loader = next; |
d9898ee8 | 344 | } |
8d138742 CE |
345 | |
346 | FREE(user_search_path); | |
d9898ee8 | 347 | } |
348 | ||
349 | done: | |
d9898ee8 | 350 | return errors; |
351 | } | |
352 | ||
8d138742 CE |
353 | |
354 | /* Try VTABLE or, if VTABLE is NULL, all available loaders for FILENAME. | |
355 | If the library is not successfully loaded, return non-zero. Otherwise, | |
356 | the dlhandle is stored at the address given in PHANDLE. */ | |
d9898ee8 | 357 | static int |
8d138742 CE |
358 | tryall_dlopen (lt_dlhandle *phandle, const char *filename, |
359 | lt_dladvise advise, const lt_dlvtable *vtable) | |
d9898ee8 | 360 | { |
8d138742 CE |
361 | lt_dlhandle handle = handles; |
362 | const char * saved_error = 0; | |
363 | int errors = 0; | |
d9898ee8 | 364 | |
8d138742 CE |
365 | #ifdef LT_DEBUG_LOADERS |
366 | fprintf (stderr, "tryall_dlopen (%s, %s)\n", | |
367 | filename ? filename : "(null)", | |
368 | vtable ? vtable->name : "(ALL)"); | |
369 | #endif | |
d9898ee8 | 370 | |
8d138742 | 371 | LT__GETERROR (saved_error); |
d9898ee8 | 372 | |
373 | /* check whether the module was already opened */ | |
8d138742 | 374 | for (;handle; handle = handle->next) |
d9898ee8 | 375 | { |
8d138742 CE |
376 | if ((handle->info.filename == filename) /* dlopen self: 0 == 0 */ |
377 | || (handle->info.filename && filename | |
378 | && streq (handle->info.filename, filename))) | |
d9898ee8 | 379 | { |
380 | break; | |
381 | } | |
d9898ee8 | 382 | } |
383 | ||
8d138742 | 384 | if (handle) |
d9898ee8 | 385 | { |
8d138742 CE |
386 | ++handle->info.ref_count; |
387 | *phandle = handle; | |
d9898ee8 | 388 | goto done; |
389 | } | |
390 | ||
8d138742 | 391 | handle = *phandle; |
d9898ee8 | 392 | if (filename) |
393 | { | |
394 | /* Comment out the check of file permissions using access. | |
395 | This call seems to always return -1 with error EACCES. | |
396 | */ | |
397 | /* We need to catch missing file errors early so that | |
398 | file_not_found() can detect what happened. | |
399 | if (access (filename, R_OK) != 0) | |
400 | { | |
8d138742 | 401 | LT__SETERROR (FILE_NOT_FOUND); |
d9898ee8 | 402 | ++errors; |
403 | goto done; | |
404 | } */ | |
405 | ||
8d138742 CE |
406 | handle->info.filename = lt__strdup (filename); |
407 | if (!handle->info.filename) | |
d9898ee8 | 408 | { |
409 | ++errors; | |
410 | goto done; | |
411 | } | |
412 | } | |
413 | else | |
414 | { | |
8d138742 | 415 | handle->info.filename = 0; |
d9898ee8 | 416 | } |
417 | ||
8d138742 CE |
418 | { |
419 | lt_dlloader loader = lt_dlloader_next (0); | |
420 | const lt_dlvtable *loader_vtable; | |
d9898ee8 | 421 | |
8d138742 CE |
422 | do |
423 | { | |
424 | if (vtable) | |
425 | loader_vtable = vtable; | |
426 | else | |
427 | loader_vtable = lt_dlloader_get (loader); | |
d9898ee8 | 428 | |
8d138742 CE |
429 | #ifdef LT_DEBUG_LOADERS |
430 | fprintf (stderr, "Calling %s->module_open (%s)\n", | |
431 | (loader_vtable && loader_vtable->name) ? loader_vtable->name : "(null)", | |
432 | filename ? filename : "(null)"); | |
433 | #endif | |
434 | handle->module = (*loader_vtable->module_open) (loader_vtable->dlloader_data, | |
435 | filename, advise); | |
436 | #ifdef LT_DEBUG_LOADERS | |
437 | fprintf (stderr, " Result: %s\n", | |
438 | handle->module ? "Success" : "Failed"); | |
439 | #endif | |
d9898ee8 | 440 | |
8d138742 CE |
441 | if (handle->module != 0) |
442 | { | |
443 | if (advise) | |
444 | { | |
445 | handle->info.is_resident = advise->is_resident; | |
446 | handle->info.is_symglobal = advise->is_symglobal; | |
447 | handle->info.is_symlocal = advise->is_symlocal; | |
448 | } | |
449 | break; | |
450 | } | |
451 | } | |
452 | while (!vtable && (loader = lt_dlloader_next (loader))); | |
453 | ||
454 | /* If VTABLE was given but couldn't open the module, or VTABLE wasn't | |
455 | given but we exhausted all loaders without opening the module, bail | |
456 | out! */ | |
457 | if ((vtable && !handle->module) | |
458 | || (!vtable && !loader)) | |
459 | { | |
460 | FREE (handle->info.filename); | |
461 | ++errors; | |
462 | goto done; | |
463 | } | |
d9898ee8 | 464 | |
8d138742 CE |
465 | handle->vtable = loader_vtable; |
466 | } | |
d9898ee8 | 467 | |
8d138742 | 468 | LT__SETERRORSTR (saved_error); |
d9898ee8 | 469 | |
8d138742 | 470 | done: |
d9898ee8 | 471 | return errors; |
472 | } | |
473 | ||
8d138742 | 474 | |
d9898ee8 | 475 | static int |
8d138742 CE |
476 | tryall_dlopen_module (lt_dlhandle *handle, const char *prefix, |
477 | const char *dirname, const char *dlname, | |
478 | lt_dladvise advise) | |
d9898ee8 | 479 | { |
480 | int error = 0; | |
481 | char *filename = 0; | |
482 | size_t filename_len = 0; | |
483 | size_t dirname_len = LT_STRLEN (dirname); | |
484 | ||
485 | assert (handle); | |
486 | assert (dirname); | |
487 | assert (dlname); | |
8d138742 | 488 | #if defined(LT_DIRSEP_CHAR) |
d9898ee8 | 489 | /* Only canonicalized names (i.e. with DIRSEP chars already converted) |
490 | should make it into this function: */ | |
491 | assert (strchr (dirname, LT_DIRSEP_CHAR) == 0); | |
492 | #endif | |
493 | ||
494 | if (dirname_len > 0) | |
495 | if (dirname[dirname_len -1] == '/') | |
496 | --dirname_len; | |
497 | filename_len = dirname_len + 1 + LT_STRLEN (dlname); | |
498 | ||
499 | /* Allocate memory, and combine DIRNAME and MODULENAME into it. | |
500 | The PREFIX (if any) is handled below. */ | |
8d138742 | 501 | filename = MALLOC (char, filename_len + 1); |
d9898ee8 | 502 | if (!filename) |
503 | return 1; | |
504 | ||
505 | sprintf (filename, "%.*s/%s", (int) dirname_len, dirname, dlname); | |
506 | ||
507 | /* Now that we have combined DIRNAME and MODULENAME, if there is | |
508 | also a PREFIX to contend with, simply recurse with the arguments | |
509 | shuffled. Otherwise, attempt to open FILENAME as a module. */ | |
510 | if (prefix) | |
511 | { | |
8d138742 CE |
512 | error += tryall_dlopen_module (handle, (const char *) 0, |
513 | prefix, filename, advise); | |
d9898ee8 | 514 | } |
8d138742 | 515 | else if (tryall_dlopen (handle, filename, advise, 0) != 0) |
d9898ee8 | 516 | { |
517 | ++error; | |
518 | } | |
519 | ||
8d138742 | 520 | FREE (filename); |
d9898ee8 | 521 | return error; |
522 | } | |
523 | ||
524 | static int | |
8d138742 CE |
525 | find_module (lt_dlhandle *handle, const char *dir, const char *libdir, |
526 | const char *dlname, const char *old_name, int installed, | |
527 | lt_dladvise advise) | |
d9898ee8 | 528 | { |
529 | /* Try to open the old library first; if it was dlpreopened, | |
530 | we want the preopened version of it, even if a dlopenable | |
531 | module is available. */ | |
8d138742 | 532 | if (old_name && tryall_dlopen (handle, old_name, advise, 0) == 0) |
d9898ee8 | 533 | { |
534 | return 0; | |
535 | } | |
536 | ||
537 | /* Try to open the dynamic library. */ | |
538 | if (dlname) | |
539 | { | |
540 | /* try to open the installed module */ | |
541 | if (installed && libdir) | |
542 | { | |
8d138742 CE |
543 | if (tryall_dlopen_module (handle, (const char *) 0, |
544 | libdir, dlname, advise) == 0) | |
d9898ee8 | 545 | return 0; |
546 | } | |
547 | ||
548 | /* try to open the not-installed module */ | |
549 | if (!installed) | |
550 | { | |
8d138742 CE |
551 | if (tryall_dlopen_module (handle, dir, objdir, |
552 | dlname, advise) == 0) | |
d9898ee8 | 553 | return 0; |
554 | } | |
555 | ||
556 | /* maybe it was moved to another directory */ | |
557 | { | |
8d138742 CE |
558 | if (dir && (tryall_dlopen_module (handle, (const char *) 0, |
559 | dir, dlname, advise) == 0)) | |
d9898ee8 | 560 | return 0; |
561 | } | |
562 | } | |
563 | ||
564 | return 1; | |
565 | } | |
566 | ||
567 | ||
568 | static int | |
8d138742 | 569 | canonicalize_path (const char *path, char **pcanonical) |
d9898ee8 | 570 | { |
571 | char *canonical = 0; | |
572 | ||
573 | assert (path && *path); | |
574 | assert (pcanonical); | |
575 | ||
8d138742 | 576 | canonical = MALLOC (char, 1+ LT_STRLEN (path)); |
d9898ee8 | 577 | if (!canonical) |
578 | return 1; | |
579 | ||
580 | { | |
581 | size_t dest = 0; | |
582 | size_t src; | |
583 | for (src = 0; path[src] != LT_EOS_CHAR; ++src) | |
584 | { | |
585 | /* Path separators are not copied to the beginning or end of | |
586 | the destination, or if another separator would follow | |
587 | immediately. */ | |
588 | if (path[src] == LT_PATHSEP_CHAR) | |
589 | { | |
590 | if ((dest == 0) | |
591 | || (path[1+ src] == LT_PATHSEP_CHAR) | |
592 | || (path[1+ src] == LT_EOS_CHAR)) | |
593 | continue; | |
594 | } | |
595 | ||
596 | /* Anything other than a directory separator is copied verbatim. */ | |
597 | if ((path[src] != '/') | |
8d138742 | 598 | #if defined(LT_DIRSEP_CHAR) |
d9898ee8 | 599 | && (path[src] != LT_DIRSEP_CHAR) |
600 | #endif | |
601 | ) | |
602 | { | |
603 | canonical[dest++] = path[src]; | |
604 | } | |
605 | /* Directory separators are converted and copied only if they are | |
606 | not at the end of a path -- i.e. before a path separator or | |
607 | NULL terminator. */ | |
608 | else if ((path[1+ src] != LT_PATHSEP_CHAR) | |
609 | && (path[1+ src] != LT_EOS_CHAR) | |
8d138742 | 610 | #if defined(LT_DIRSEP_CHAR) |
d9898ee8 | 611 | && (path[1+ src] != LT_DIRSEP_CHAR) |
612 | #endif | |
613 | && (path[1+ src] != '/')) | |
614 | { | |
615 | canonical[dest++] = '/'; | |
616 | } | |
617 | } | |
618 | ||
619 | /* Add an end-of-string marker at the end. */ | |
620 | canonical[dest] = LT_EOS_CHAR; | |
621 | } | |
622 | ||
623 | /* Assign new value. */ | |
624 | *pcanonical = canonical; | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | static int | |
8d138742 | 630 | argzize_path (const char *path, char **pargz, size_t *pargz_len) |
d9898ee8 | 631 | { |
632 | error_t error; | |
633 | ||
634 | assert (path); | |
635 | assert (pargz); | |
636 | assert (pargz_len); | |
637 | ||
638 | if ((error = argz_create_sep (path, LT_PATHSEP_CHAR, pargz, pargz_len))) | |
639 | { | |
640 | switch (error) | |
641 | { | |
642 | case ENOMEM: | |
8d138742 | 643 | LT__SETERROR (NO_MEMORY); |
d9898ee8 | 644 | break; |
645 | default: | |
8d138742 | 646 | LT__SETERROR (UNKNOWN); |
d9898ee8 | 647 | break; |
648 | } | |
649 | ||
650 | return 1; | |
651 | } | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | /* Repeatedly call FUNC with each LT_PATHSEP_CHAR delimited element | |
657 | of SEARCH_PATH and references to DATA1 and DATA2, until FUNC returns | |
658 | non-zero or all elements are exhausted. If BASE_NAME is non-NULL, | |
659 | it is appended to each SEARCH_PATH element before FUNC is called. */ | |
660 | static int | |
8d138742 CE |
661 | foreach_dirinpath (const char *search_path, const char *base_name, |
662 | foreach_callback_func *func, void *data1, void *data2) | |
d9898ee8 | 663 | { |
664 | int result = 0; | |
8d138742 | 665 | size_t filenamesize = 0; |
d9898ee8 | 666 | size_t lenbase = LT_STRLEN (base_name); |
667 | size_t argz_len = 0; | |
668 | char *argz = 0; | |
669 | char *filename = 0; | |
670 | char *canonical = 0; | |
671 | ||
d9898ee8 | 672 | if (!search_path || !*search_path) |
673 | { | |
8d138742 | 674 | LT__SETERROR (FILE_NOT_FOUND); |
d9898ee8 | 675 | goto cleanup; |
676 | } | |
677 | ||
678 | if (canonicalize_path (search_path, &canonical) != 0) | |
679 | goto cleanup; | |
680 | ||
681 | if (argzize_path (canonical, &argz, &argz_len) != 0) | |
682 | goto cleanup; | |
683 | ||
684 | { | |
685 | char *dir_name = 0; | |
686 | while ((dir_name = argz_next (argz, argz_len, dir_name))) | |
687 | { | |
688 | size_t lendir = LT_STRLEN (dir_name); | |
689 | ||
8d138742 | 690 | if (1+ lendir + lenbase >= filenamesize) |
d9898ee8 | 691 | { |
8d138742 CE |
692 | FREE (filename); |
693 | filenamesize = 1+ lendir + 1+ lenbase; /* "/d" + '/' + "f" + '\0' */ | |
694 | filename = MALLOC (char, filenamesize); | |
d9898ee8 | 695 | if (!filename) |
696 | goto cleanup; | |
697 | } | |
698 | ||
699 | assert (filenamesize > lendir); | |
700 | strcpy (filename, dir_name); | |
701 | ||
702 | if (base_name && *base_name) | |
703 | { | |
704 | if (filename[lendir -1] != '/') | |
705 | filename[lendir++] = '/'; | |
706 | strcpy (filename +lendir, base_name); | |
707 | } | |
708 | ||
709 | if ((result = (*func) (filename, data1, data2))) | |
710 | { | |
711 | break; | |
712 | } | |
713 | } | |
714 | } | |
715 | ||
716 | cleanup: | |
8d138742 CE |
717 | FREE (argz); |
718 | FREE (canonical); | |
719 | FREE (filename); | |
d9898ee8 | 720 | |
721 | return result; | |
722 | } | |
723 | ||
724 | /* If FILEPATH can be opened, store the name of the directory component | |
725 | in DATA1, and the opened FILE* structure address in DATA2. Otherwise | |
726 | DATA1 is unchanged, but DATA2 is set to a pointer to NULL. */ | |
727 | static int | |
8d138742 | 728 | find_file_callback (char *filename, void *data1, void *data2) |
d9898ee8 | 729 | { |
730 | char **pdir = (char **) data1; | |
731 | FILE **pfile = (FILE **) data2; | |
732 | int is_done = 0; | |
733 | ||
734 | assert (filename && *filename); | |
735 | assert (pdir); | |
736 | assert (pfile); | |
737 | ||
738 | if ((*pfile = fopen (filename, LT_READTEXT_MODE))) | |
739 | { | |
740 | char *dirend = strrchr (filename, '/'); | |
741 | ||
742 | if (dirend > filename) | |
743 | *dirend = LT_EOS_CHAR; | |
744 | ||
8d138742 CE |
745 | FREE (*pdir); |
746 | *pdir = lt__strdup (filename); | |
d9898ee8 | 747 | is_done = (*pdir == 0) ? -1 : 1; |
748 | } | |
749 | ||
750 | return is_done; | |
751 | } | |
752 | ||
753 | static FILE * | |
8d138742 | 754 | find_file (const char *search_path, const char *base_name, char **pdir) |
d9898ee8 | 755 | { |
756 | FILE *file = 0; | |
757 | ||
758 | foreach_dirinpath (search_path, base_name, find_file_callback, pdir, &file); | |
759 | ||
760 | return file; | |
761 | } | |
762 | ||
763 | static int | |
8d138742 | 764 | find_handle_callback (char *filename, void *data, void *data2) |
d9898ee8 | 765 | { |
8d138742 | 766 | lt_dlhandle *phandle = (lt_dlhandle *) data; |
d9898ee8 | 767 | int notfound = access (filename, R_OK); |
8d138742 | 768 | lt_dladvise advise = (lt_dladvise) data2; |
d9898ee8 | 769 | |
770 | /* Bail out if file cannot be read... */ | |
771 | if (notfound) | |
772 | return 0; | |
773 | ||
774 | /* Try to dlopen the file, but do not continue searching in any | |
775 | case. */ | |
8d138742 CE |
776 | if (tryall_dlopen (phandle, filename, advise, 0) != 0) |
777 | *phandle = 0; | |
d9898ee8 | 778 | |
779 | return 1; | |
780 | } | |
781 | ||
782 | /* If HANDLE was found return it, otherwise return 0. If HANDLE was | |
783 | found but could not be opened, *HANDLE will be set to 0. */ | |
784 | static lt_dlhandle * | |
8d138742 CE |
785 | find_handle (const char *search_path, const char *base_name, |
786 | lt_dlhandle *phandle, lt_dladvise advise) | |
d9898ee8 | 787 | { |
788 | if (!search_path) | |
789 | return 0; | |
790 | ||
791 | if (!foreach_dirinpath (search_path, base_name, find_handle_callback, | |
8d138742 | 792 | phandle, advise)) |
d9898ee8 | 793 | return 0; |
794 | ||
8d138742 CE |
795 | return phandle; |
796 | } | |
797 | ||
798 | #if !defined(LTDL_DLOPEN_DEPLIBS) | |
799 | static int | |
800 | load_deplibs (lt_dlhandle handle, char * LT__UNUSED deplibs) | |
801 | { | |
802 | handle->depcount = 0; | |
803 | return 0; | |
d9898ee8 | 804 | } |
805 | ||
8d138742 | 806 | #else /* defined(LTDL_DLOPEN_DEPLIBS) */ |
d9898ee8 | 807 | static int |
8d138742 | 808 | load_deplibs (lt_dlhandle handle, char *deplibs) |
d9898ee8 | 809 | { |
d9898ee8 | 810 | char *p, *save_search_path = 0; |
811 | int depcount = 0; | |
812 | int i; | |
813 | char **names = 0; | |
d9898ee8 | 814 | int errors = 0; |
815 | ||
816 | handle->depcount = 0; | |
817 | ||
d9898ee8 | 818 | if (!deplibs) |
819 | { | |
820 | return errors; | |
821 | } | |
822 | ++errors; | |
823 | ||
d9898ee8 | 824 | if (user_search_path) |
825 | { | |
8d138742 | 826 | save_search_path = lt__strdup (user_search_path); |
d9898ee8 | 827 | if (!save_search_path) |
828 | goto cleanup; | |
829 | } | |
830 | ||
831 | /* extract search paths and count deplibs */ | |
832 | p = deplibs; | |
833 | while (*p) | |
834 | { | |
8d138742 | 835 | if (!isspace ((unsigned char) *p)) |
d9898ee8 | 836 | { |
837 | char *end = p+1; | |
8d138742 | 838 | while (*end && !isspace((unsigned char) *end)) |
d9898ee8 | 839 | { |
840 | ++end; | |
841 | } | |
842 | ||
843 | if (strncmp(p, "-L", 2) == 0 || strncmp(p, "-R", 2) == 0) | |
844 | { | |
845 | char save = *end; | |
846 | *end = 0; /* set a temporary string terminator */ | |
847 | if (lt_dladdsearchdir(p+2)) | |
848 | { | |
849 | goto cleanup; | |
850 | } | |
851 | *end = save; | |
852 | } | |
853 | else | |
854 | { | |
855 | ++depcount; | |
856 | } | |
857 | ||
858 | p = end; | |
859 | } | |
860 | else | |
861 | { | |
862 | ++p; | |
863 | } | |
864 | } | |
865 | ||
8d138742 | 866 | |
d9898ee8 | 867 | if (!depcount) |
868 | { | |
869 | errors = 0; | |
870 | goto cleanup; | |
871 | } | |
872 | ||
8d138742 | 873 | names = MALLOC (char *, depcount); |
d9898ee8 | 874 | if (!names) |
875 | goto cleanup; | |
876 | ||
877 | /* now only extract the actual deplibs */ | |
878 | depcount = 0; | |
879 | p = deplibs; | |
880 | while (*p) | |
881 | { | |
8d138742 | 882 | if (isspace ((unsigned char) *p)) |
d9898ee8 | 883 | { |
884 | ++p; | |
885 | } | |
886 | else | |
887 | { | |
888 | char *end = p+1; | |
8d138742 | 889 | while (*end && !isspace ((unsigned char) *end)) |
d9898ee8 | 890 | { |
891 | ++end; | |
892 | } | |
893 | ||
894 | if (strncmp(p, "-L", 2) != 0 && strncmp(p, "-R", 2) != 0) | |
895 | { | |
896 | char *name; | |
897 | char save = *end; | |
898 | *end = 0; /* set a temporary string terminator */ | |
899 | if (strncmp(p, "-l", 2) == 0) | |
900 | { | |
901 | size_t name_len = 3+ /* "lib" */ LT_STRLEN (p + 2); | |
8d138742 | 902 | name = MALLOC (char, 1+ name_len); |
d9898ee8 | 903 | if (name) |
904 | sprintf (name, "lib%s", p+2); | |
905 | } | |
906 | else | |
8d138742 | 907 | name = lt__strdup(p); |
d9898ee8 | 908 | |
909 | if (!name) | |
910 | goto cleanup_names; | |
911 | ||
912 | names[depcount++] = name; | |
913 | *end = save; | |
914 | } | |
915 | p = end; | |
916 | } | |
917 | } | |
918 | ||
919 | /* load the deplibs (in reverse order) | |
920 | At this stage, don't worry if the deplibs do not load correctly, | |
921 | they may already be statically linked into the loading application | |
922 | for instance. There will be a more enlightening error message | |
923 | later on if the loaded module cannot resolve all of its symbols. */ | |
924 | if (depcount) | |
925 | { | |
8d138742 | 926 | lt_dlhandle cur = handle; |
d9898ee8 | 927 | int j = 0; |
928 | ||
8d138742 CE |
929 | cur->deplibs = MALLOC (lt_dlhandle, depcount); |
930 | if (!cur->deplibs) | |
ac40fd9e | 931 | goto cleanup_names; |
d9898ee8 | 932 | |
933 | for (i = 0; i < depcount; ++i) | |
934 | { | |
8d138742 CE |
935 | cur->deplibs[j] = lt_dlopenext(names[depcount-1-i]); |
936 | if (cur->deplibs[j]) | |
d9898ee8 | 937 | { |
938 | ++j; | |
939 | } | |
940 | } | |
941 | ||
8d138742 | 942 | cur->depcount = j; /* Number of successfully loaded deplibs */ |
d9898ee8 | 943 | errors = 0; |
944 | } | |
945 | ||
946 | cleanup_names: | |
947 | for (i = 0; i < depcount; ++i) | |
948 | { | |
8d138742 | 949 | FREE (names[i]); |
d9898ee8 | 950 | } |
951 | ||
952 | cleanup: | |
8d138742 | 953 | FREE (names); |
d9898ee8 | 954 | /* restore the old search path */ |
8d138742 CE |
955 | if (save_search_path) { |
956 | MEMREASSIGN (user_search_path, save_search_path); | |
d9898ee8 | 957 | } |
d9898ee8 | 958 | |
959 | return errors; | |
960 | } | |
8d138742 | 961 | #endif /* defined(LTDL_DLOPEN_DEPLIBS) */ |
d9898ee8 | 962 | |
963 | static int | |
8d138742 | 964 | unload_deplibs (lt_dlhandle handle) |
d9898ee8 | 965 | { |
966 | int i; | |
967 | int errors = 0; | |
8d138742 | 968 | lt_dlhandle cur = handle; |
d9898ee8 | 969 | |
8d138742 | 970 | if (cur->depcount) |
d9898ee8 | 971 | { |
8d138742 | 972 | for (i = 0; i < cur->depcount; ++i) |
d9898ee8 | 973 | { |
8d138742 | 974 | if (!LT_DLIS_RESIDENT (cur->deplibs[i])) |
d9898ee8 | 975 | { |
8d138742 | 976 | errors += lt_dlclose (cur->deplibs[i]); |
d9898ee8 | 977 | } |
978 | } | |
8d138742 | 979 | FREE (cur->deplibs); |
d9898ee8 | 980 | } |
981 | ||
982 | return errors; | |
983 | } | |
984 | ||
985 | static int | |
8d138742 | 986 | trim (char **dest, const char *str) |
d9898ee8 | 987 | { |
988 | /* remove the leading and trailing "'" from str | |
989 | and store the result in dest */ | |
990 | const char *end = strrchr (str, '\''); | |
991 | size_t len = LT_STRLEN (str); | |
992 | char *tmp; | |
993 | ||
8d138742 | 994 | FREE (*dest); |
d9898ee8 | 995 | |
996 | if (!end) | |
997 | return 1; | |
998 | ||
999 | if (len > 3 && str[0] == '\'') | |
1000 | { | |
8d138742 | 1001 | tmp = MALLOC (char, end - str); |
d9898ee8 | 1002 | if (!tmp) |
1003 | return 1; | |
1004 | ||
8d138742 CE |
1005 | memcpy(tmp, &str[1], (end - str) - 1); |
1006 | tmp[(end - str) - 1] = LT_EOS_CHAR; | |
d9898ee8 | 1007 | *dest = tmp; |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | *dest = 0; | |
1012 | } | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
8d138742 | 1017 | /* Read the .la file FILE. */ |
d9898ee8 | 1018 | static int |
8d138742 CE |
1019 | parse_dotla_file(FILE *file, char **dlname, char **libdir, char **deplibs, |
1020 | char **old_name, int *installed) | |
d9898ee8 | 1021 | { |
8d138742 CE |
1022 | int errors = 0; |
1023 | size_t line_len = LT_FILENAME_MAX; | |
1024 | char * line = MALLOC (char, line_len); | |
d9898ee8 | 1025 | |
8d138742 CE |
1026 | if (!line) |
1027 | { | |
1028 | LT__SETERROR (FILE_NOT_FOUND); | |
1029 | return 1; | |
1030 | } | |
1031 | ||
1032 | while (!feof (file)) | |
1033 | { | |
1034 | line[line_len-2] = '\0'; | |
1035 | if (!fgets (line, (int) line_len, file)) | |
1036 | { | |
1037 | break; | |
1038 | } | |
1039 | ||
1040 | /* Handle the case where we occasionally need to read a line | |
1041 | that is longer than the initial buffer size. | |
1042 | Behave even if the file contains NUL bytes due to corruption. */ | |
1043 | while (line[line_len-2] != '\0' && line[line_len-2] != '\n' && !feof (file)) | |
1044 | { | |
1045 | line = REALLOC (char, line, line_len *2); | |
1046 | if (!line) | |
1047 | { | |
1048 | ++errors; | |
1049 | goto cleanup; | |
1050 | } | |
1051 | line[line_len * 2 - 2] = '\0'; | |
1052 | if (!fgets (&line[line_len -1], (int) line_len +1, file)) | |
1053 | { | |
1054 | break; | |
1055 | } | |
1056 | line_len *= 2; | |
1057 | } | |
1058 | ||
1059 | if (line[0] == '\n' || line[0] == '#') | |
1060 | { | |
1061 | continue; | |
1062 | } | |
1063 | ||
1064 | #undef STR_DLNAME | |
1065 | #define STR_DLNAME "dlname=" | |
1066 | if (strncmp (line, STR_DLNAME, sizeof (STR_DLNAME) - 1) == 0) | |
1067 | { | |
1068 | errors += trim (dlname, &line[sizeof (STR_DLNAME) - 1]); | |
1069 | } | |
1070 | ||
1071 | #undef STR_OLD_LIBRARY | |
1072 | #define STR_OLD_LIBRARY "old_library=" | |
1073 | else if (strncmp (line, STR_OLD_LIBRARY, | |
1074 | sizeof (STR_OLD_LIBRARY) - 1) == 0) | |
1075 | { | |
1076 | errors += trim (old_name, &line[sizeof (STR_OLD_LIBRARY) - 1]); | |
1077 | } | |
1078 | #undef STR_LIBDIR | |
1079 | #define STR_LIBDIR "libdir=" | |
1080 | else if (strncmp (line, STR_LIBDIR, sizeof (STR_LIBDIR) - 1) == 0) | |
1081 | { | |
1082 | errors += trim (libdir, &line[sizeof(STR_LIBDIR) - 1]); | |
1083 | } | |
1084 | ||
1085 | #undef STR_DL_DEPLIBS | |
1086 | #define STR_DL_DEPLIBS "dependency_libs=" | |
1087 | else if (strncmp (line, STR_DL_DEPLIBS, | |
1088 | sizeof (STR_DL_DEPLIBS) - 1) == 0) | |
1089 | { | |
1090 | errors += trim (deplibs, &line[sizeof (STR_DL_DEPLIBS) - 1]); | |
1091 | } | |
1092 | else if (streq (line, "installed=yes\n")) | |
1093 | { | |
1094 | *installed = 1; | |
1095 | } | |
1096 | else if (streq (line, "installed=no\n")) | |
1097 | { | |
1098 | *installed = 0; | |
1099 | } | |
1100 | ||
1101 | #undef STR_LIBRARY_NAMES | |
1102 | #define STR_LIBRARY_NAMES "library_names=" | |
1103 | else if (!*dlname && strncmp (line, STR_LIBRARY_NAMES, | |
1104 | sizeof (STR_LIBRARY_NAMES) - 1) == 0) | |
1105 | { | |
1106 | char *last_libname; | |
1107 | errors += trim (dlname, &line[sizeof (STR_LIBRARY_NAMES) - 1]); | |
1108 | if (!errors | |
1109 | && *dlname | |
1110 | && (last_libname = strrchr (*dlname, ' ')) != 0) | |
1111 | { | |
1112 | last_libname = lt__strdup (last_libname + 1); | |
1113 | if (!last_libname) | |
1114 | { | |
1115 | ++errors; | |
1116 | goto cleanup; | |
1117 | } | |
1118 | MEMREASSIGN (*dlname, last_libname); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | if (errors) | |
1123 | break; | |
1124 | } | |
1125 | cleanup: | |
1126 | FREE (line); | |
1127 | return errors; | |
d9898ee8 | 1128 | } |
1129 | ||
8d138742 CE |
1130 | |
1131 | /* Try to open FILENAME as a module. */ | |
d9898ee8 | 1132 | static int |
8d138742 CE |
1133 | try_dlopen (lt_dlhandle *phandle, const char *filename, const char *ext, |
1134 | lt_dladvise advise) | |
d9898ee8 | 1135 | { |
d9898ee8 | 1136 | const char * saved_error = 0; |
8d138742 | 1137 | char * archive_name = 0; |
d9898ee8 | 1138 | char * canonical = 0; |
1139 | char * base_name = 0; | |
1140 | char * dir = 0; | |
1141 | char * name = 0; | |
8d138742 | 1142 | char * attempt = 0; |
d9898ee8 | 1143 | int errors = 0; |
1144 | lt_dlhandle newhandle; | |
1145 | ||
1146 | assert (phandle); | |
1147 | assert (*phandle == 0); | |
1148 | ||
8d138742 CE |
1149 | #ifdef LT_DEBUG_LOADERS |
1150 | fprintf (stderr, "try_dlopen (%s, %s)\n", | |
1151 | filename ? filename : "(null)", | |
1152 | ext ? ext : "(null)"); | |
1153 | #endif | |
1154 | ||
1155 | LT__GETERROR (saved_error); | |
d9898ee8 | 1156 | |
1157 | /* dlopen self? */ | |
1158 | if (!filename) | |
1159 | { | |
8d138742 | 1160 | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
d9898ee8 | 1161 | if (*phandle == 0) |
1162 | return 1; | |
1163 | ||
d9898ee8 | 1164 | newhandle = *phandle; |
1165 | ||
1166 | /* lt_dlclose()ing yourself is very bad! Disallow it. */ | |
8d138742 | 1167 | newhandle->info.is_resident = 1; |
d9898ee8 | 1168 | |
8d138742 | 1169 | if (tryall_dlopen (&newhandle, 0, advise, 0) != 0) |
d9898ee8 | 1170 | { |
8d138742 | 1171 | FREE (*phandle); |
d9898ee8 | 1172 | return 1; |
1173 | } | |
1174 | ||
1175 | goto register_handle; | |
1176 | } | |
1177 | ||
1178 | assert (filename && *filename); | |
1179 | ||
8d138742 CE |
1180 | if (ext) |
1181 | { | |
1182 | attempt = MALLOC (char, LT_STRLEN (filename) + LT_STRLEN (ext) + 1); | |
1183 | if (!attempt) | |
1184 | return 1; | |
1185 | ||
1186 | sprintf(attempt, "%s%s", filename, ext); | |
1187 | } | |
1188 | else | |
1189 | { | |
1190 | attempt = lt__strdup (filename); | |
1191 | if (!attempt) | |
1192 | return 1; | |
1193 | } | |
1194 | ||
d9898ee8 | 1195 | /* Doing this immediately allows internal functions to safely |
1196 | assume only canonicalized paths are passed. */ | |
8d138742 | 1197 | if (canonicalize_path (attempt, &canonical) != 0) |
d9898ee8 | 1198 | { |
1199 | ++errors; | |
1200 | goto cleanup; | |
1201 | } | |
1202 | ||
1203 | /* If the canonical module name is a path (relative or absolute) | |
1204 | then split it into a directory part and a name part. */ | |
1205 | base_name = strrchr (canonical, '/'); | |
1206 | if (base_name) | |
1207 | { | |
1208 | size_t dirlen = (1+ base_name) - canonical; | |
1209 | ||
8d138742 | 1210 | dir = MALLOC (char, 1+ dirlen); |
d9898ee8 | 1211 | if (!dir) |
1212 | { | |
1213 | ++errors; | |
1214 | goto cleanup; | |
1215 | } | |
1216 | ||
1217 | strncpy (dir, canonical, dirlen); | |
1218 | dir[dirlen] = LT_EOS_CHAR; | |
1219 | ||
1220 | ++base_name; | |
1221 | } | |
1222 | else | |
8d138742 | 1223 | MEMREASSIGN (base_name, canonical); |
d9898ee8 | 1224 | |
1225 | assert (base_name && *base_name); | |
1226 | ||
d9898ee8 | 1227 | ext = strrchr (base_name, '.'); |
8d138742 CE |
1228 | if (!ext) |
1229 | { | |
1230 | ext = base_name + LT_STRLEN (base_name); | |
1231 | } | |
1232 | ||
1233 | /* extract the module name from the file name */ | |
1234 | name = MALLOC (char, ext - base_name + 1); | |
1235 | if (!name) | |
1236 | { | |
1237 | ++errors; | |
1238 | goto cleanup; | |
1239 | } | |
1240 | ||
1241 | /* canonicalize the module name */ | |
1242 | { | |
1243 | int i; | |
1244 | for (i = 0; i < ext - base_name; ++i) | |
1245 | { | |
1246 | if (isalnum ((unsigned char)(base_name[i]))) | |
1247 | { | |
1248 | name[i] = base_name[i]; | |
1249 | } | |
1250 | else | |
1251 | { | |
1252 | name[i] = '_'; | |
1253 | } | |
1254 | } | |
1255 | name[ext - base_name] = LT_EOS_CHAR; | |
1256 | } | |
1257 | ||
1258 | /* Before trawling through the filesystem in search of a module, | |
1259 | check whether we are opening a preloaded module. */ | |
1260 | if (!dir) | |
1261 | { | |
1262 | const lt_dlvtable *vtable = lt_dlloader_find ("lt_preopen"); | |
1263 | ||
1264 | if (vtable) | |
1265 | { | |
1266 | /* name + "." + libext + NULL */ | |
1267 | archive_name = MALLOC (char, LT_STRLEN (name) + LT_STRLEN (libext) + 2); | |
1268 | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); | |
1269 | ||
1270 | if ((*phandle == NULL) || (archive_name == NULL)) | |
1271 | { | |
1272 | ++errors; | |
1273 | goto cleanup; | |
1274 | } | |
1275 | newhandle = *phandle; | |
1276 | ||
1277 | /* Preloaded modules are always named according to their old | |
1278 | archive name. */ | |
1279 | sprintf (archive_name, "%s.%s", name, libext); | |
1280 | ||
1281 | if (tryall_dlopen (&newhandle, archive_name, advise, vtable) == 0) | |
1282 | { | |
1283 | goto register_handle; | |
1284 | } | |
1285 | ||
1286 | /* If we're still here, there was no matching preloaded module, | |
1287 | so put things back as we found them, and continue searching. */ | |
1288 | FREE (*phandle); | |
1289 | newhandle = NULL; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* If we are allowing only preloaded modules, and we didn't find | |
1294 | anything yet, give up on the search here. */ | |
1295 | if (advise && advise->try_preload_only) | |
1296 | { | |
1297 | goto cleanup; | |
1298 | } | |
1299 | ||
1300 | /* Check whether we are opening a libtool module (.la extension). */ | |
1301 | if (ext && streq (ext, archive_ext)) | |
d9898ee8 | 1302 | { |
1303 | /* this seems to be a libtool module */ | |
1304 | FILE * file = 0; | |
1305 | char * dlname = 0; | |
1306 | char * old_name = 0; | |
1307 | char * libdir = 0; | |
1308 | char * deplibs = 0; | |
d9898ee8 | 1309 | |
1310 | /* if we can't find the installed flag, it is probably an | |
1311 | installed libtool archive, produced with an old version | |
1312 | of libtool */ | |
1313 | int installed = 1; | |
1314 | ||
d9898ee8 | 1315 | /* Now try to open the .la file. If there is no directory name |
8d138742 CE |
1316 | component, try to find it first in user_search_path and then other |
1317 | prescribed paths. Otherwise (or in any case if the module was not | |
1318 | yet found) try opening just the module name as passed. */ | |
d9898ee8 | 1319 | if (!dir) |
1320 | { | |
8d138742 | 1321 | const char *search_path = user_search_path; |
d9898ee8 | 1322 | |
d9898ee8 | 1323 | if (search_path) |
1324 | file = find_file (user_search_path, base_name, &dir); | |
d9898ee8 | 1325 | |
1326 | if (!file) | |
1327 | { | |
1328 | search_path = getenv (LTDL_SEARCHPATH_VAR); | |
1329 | if (search_path) | |
1330 | file = find_file (search_path, base_name, &dir); | |
1331 | } | |
1332 | ||
8d138742 | 1333 | #if defined(LT_MODULE_PATH_VAR) |
d9898ee8 | 1334 | if (!file) |
1335 | { | |
8d138742 | 1336 | search_path = getenv (LT_MODULE_PATH_VAR); |
d9898ee8 | 1337 | if (search_path) |
1338 | file = find_file (search_path, base_name, &dir); | |
1339 | } | |
1340 | #endif | |
8d138742 CE |
1341 | #if defined(LT_DLSEARCH_PATH) |
1342 | if (!file && *sys_dlsearch_path) | |
d9898ee8 | 1343 | { |
8d138742 | 1344 | file = find_file (sys_dlsearch_path, base_name, &dir); |
d9898ee8 | 1345 | } |
1346 | #endif | |
1347 | } | |
ac40fd9e | 1348 | if (!file) |
d9898ee8 | 1349 | { |
8d138742 | 1350 | file = fopen (attempt, LT_READTEXT_MODE); |
d9898ee8 | 1351 | } |
1352 | ||
1353 | /* If we didn't find the file by now, it really isn't there. Set | |
1354 | the status flag, and bail out. */ | |
8d138742 CE |
1355 | if (!file) |
1356 | { | |
1357 | LT__SETERROR (FILE_NOT_FOUND); | |
1358 | ++errors; | |
1359 | goto cleanup; | |
d9898ee8 | 1360 | } |
1361 | ||
8d138742 CE |
1362 | /* read the .la file */ |
1363 | if (parse_dotla_file(file, &dlname, &libdir, &deplibs, | |
1364 | &old_name, &installed) != 0) | |
1365 | ++errors; | |
1366 | ||
d9898ee8 | 1367 | fclose (file); |
d9898ee8 | 1368 | |
1369 | /* allocate the handle */ | |
8d138742 | 1370 | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
d9898ee8 | 1371 | if (*phandle == 0) |
1372 | ++errors; | |
1373 | ||
1374 | if (errors) | |
1375 | { | |
8d138742 CE |
1376 | FREE (dlname); |
1377 | FREE (old_name); | |
1378 | FREE (libdir); | |
1379 | FREE (deplibs); | |
1380 | FREE (*phandle); | |
d9898ee8 | 1381 | goto cleanup; |
1382 | } | |
1383 | ||
1384 | assert (*phandle); | |
1385 | ||
d9898ee8 | 1386 | if (load_deplibs (*phandle, deplibs) == 0) |
1387 | { | |
1388 | newhandle = *phandle; | |
1389 | /* find_module may replace newhandle */ | |
8d138742 CE |
1390 | if (find_module (&newhandle, dir, libdir, dlname, old_name, |
1391 | installed, advise)) | |
d9898ee8 | 1392 | { |
1393 | unload_deplibs (*phandle); | |
1394 | ++errors; | |
1395 | } | |
1396 | } | |
1397 | else | |
1398 | { | |
1399 | ++errors; | |
1400 | } | |
1401 | ||
8d138742 CE |
1402 | FREE (dlname); |
1403 | FREE (old_name); | |
1404 | FREE (libdir); | |
1405 | FREE (deplibs); | |
1406 | ||
d9898ee8 | 1407 | if (errors) |
1408 | { | |
8d138742 | 1409 | FREE (*phandle); |
d9898ee8 | 1410 | goto cleanup; |
1411 | } | |
1412 | ||
1413 | if (*phandle != newhandle) | |
1414 | { | |
1415 | unload_deplibs (*phandle); | |
1416 | } | |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | /* not a libtool module */ | |
8d138742 | 1421 | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
d9898ee8 | 1422 | if (*phandle == 0) |
1423 | { | |
1424 | ++errors; | |
1425 | goto cleanup; | |
1426 | } | |
1427 | ||
d9898ee8 | 1428 | newhandle = *phandle; |
1429 | ||
1430 | /* If the module has no directory name component, try to find it | |
1431 | first in user_search_path and then other prescribed paths. | |
1432 | Otherwise (or in any case if the module was not yet found) try | |
1433 | opening just the module name as passed. */ | |
8d138742 CE |
1434 | if ((dir || (!find_handle (user_search_path, base_name, |
1435 | &newhandle, advise) | |
d9898ee8 | 1436 | && !find_handle (getenv (LTDL_SEARCHPATH_VAR), base_name, |
8d138742 CE |
1437 | &newhandle, advise) |
1438 | #if defined(LT_MODULE_PATH_VAR) | |
1439 | && !find_handle (getenv (LT_MODULE_PATH_VAR), base_name, | |
1440 | &newhandle, advise) | |
d9898ee8 | 1441 | #endif |
8d138742 CE |
1442 | #if defined(LT_DLSEARCH_PATH) |
1443 | && !find_handle (sys_dlsearch_path, base_name, | |
1444 | &newhandle, advise) | |
d9898ee8 | 1445 | #endif |
1446 | ))) | |
1447 | { | |
8d138742 CE |
1448 | if (tryall_dlopen (&newhandle, attempt, advise, 0) != 0) |
1449 | { | |
1450 | newhandle = NULL; | |
1451 | } | |
d9898ee8 | 1452 | } |
1453 | ||
1454 | if (!newhandle) | |
1455 | { | |
8d138742 | 1456 | FREE (*phandle); |
d9898ee8 | 1457 | ++errors; |
1458 | goto cleanup; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | register_handle: | |
8d138742 | 1463 | MEMREASSIGN (*phandle, newhandle); |
d9898ee8 | 1464 | |
1465 | if ((*phandle)->info.ref_count == 0) | |
1466 | { | |
1467 | (*phandle)->info.ref_count = 1; | |
8d138742 | 1468 | MEMREASSIGN ((*phandle)->info.name, name); |
d9898ee8 | 1469 | |
8d138742 CE |
1470 | (*phandle)->next = handles; |
1471 | handles = *phandle; | |
d9898ee8 | 1472 | } |
1473 | ||
8d138742 | 1474 | LT__SETERRORSTR (saved_error); |
d9898ee8 | 1475 | |
1476 | cleanup: | |
8d138742 CE |
1477 | FREE (dir); |
1478 | FREE (attempt); | |
1479 | FREE (name); | |
1480 | if (!canonical) /* was MEMREASSIGNed */ | |
1481 | FREE (base_name); | |
1482 | FREE (canonical); | |
1483 | FREE (archive_name); | |
d9898ee8 | 1484 | |
1485 | return errors; | |
1486 | } | |
1487 | ||
d9898ee8 | 1488 | |
1489 | /* If the last error messge store was `FILE_NOT_FOUND', then return | |
1490 | non-zero. */ | |
1491 | static int | |
8d138742 | 1492 | file_not_found (void) |
d9898ee8 | 1493 | { |
1494 | const char *error = 0; | |
1495 | ||
8d138742 CE |
1496 | LT__GETERROR (error); |
1497 | if (error == LT__STRERROR (FILE_NOT_FOUND)) | |
d9898ee8 | 1498 | return 1; |
1499 | ||
1500 | return 0; | |
1501 | } | |
1502 | ||
d9898ee8 | 1503 | |
8d138742 CE |
1504 | /* Unless FILENAME already bears a suitable library extension, then |
1505 | return 0. */ | |
1506 | static int | |
1507 | has_library_ext (const char *filename) | |
1508 | { | |
1509 | char * ext = 0; | |
d9898ee8 | 1510 | |
1511 | assert (filename); | |
1512 | ||
d9898ee8 | 1513 | ext = strrchr (filename, '.'); |
1514 | ||
8d138742 CE |
1515 | if (ext && ((streq (ext, archive_ext)) |
1516 | #if defined(LT_MODULE_EXT) | |
1517 | || (streq (ext, shlib_ext)) | |
d9898ee8 | 1518 | #endif |
8d138742 | 1519 | )) |
d9898ee8 | 1520 | { |
8d138742 | 1521 | return 1; |
d9898ee8 | 1522 | } |
1523 | ||
8d138742 CE |
1524 | return 0; |
1525 | } | |
1526 | ||
1527 | ||
1528 | /* Initialise and configure a user lt_dladvise opaque object. */ | |
1529 | ||
1530 | int | |
1531 | lt_dladvise_init (lt_dladvise *padvise) | |
1532 | { | |
1533 | lt_dladvise advise = (lt_dladvise) lt__zalloc (sizeof (struct lt__advise)); | |
1534 | *padvise = advise; | |
1535 | return (advise ? 0 : 1); | |
1536 | } | |
1537 | ||
1538 | int | |
1539 | lt_dladvise_destroy (lt_dladvise *padvise) | |
1540 | { | |
1541 | if (padvise) | |
1542 | FREE(*padvise); | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | int | |
1547 | lt_dladvise_ext (lt_dladvise *padvise) | |
1548 | { | |
1549 | assert (padvise && *padvise); | |
1550 | (*padvise)->try_ext = 1; | |
1551 | return 0; | |
1552 | } | |
1553 | ||
1554 | int | |
1555 | lt_dladvise_resident (lt_dladvise *padvise) | |
1556 | { | |
1557 | assert (padvise && *padvise); | |
1558 | (*padvise)->is_resident = 1; | |
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | int | |
1563 | lt_dladvise_local (lt_dladvise *padvise) | |
1564 | { | |
1565 | assert (padvise && *padvise); | |
1566 | (*padvise)->is_symlocal = 1; | |
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | int | |
1571 | lt_dladvise_global (lt_dladvise *padvise) | |
1572 | { | |
1573 | assert (padvise && *padvise); | |
1574 | (*padvise)->is_symglobal = 1; | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | int | |
1579 | lt_dladvise_preload (lt_dladvise *padvise) | |
1580 | { | |
1581 | assert (padvise && *padvise); | |
1582 | (*padvise)->try_preload_only = 1; | |
1583 | return 0; | |
1584 | } | |
1585 | ||
1586 | /* Libtool-1.5.x interface for loading a new module named FILENAME. */ | |
1587 | lt_dlhandle | |
1588 | lt_dlopen (const char *filename) | |
1589 | { | |
1590 | return lt_dlopenadvise (filename, NULL); | |
1591 | } | |
1592 | ||
1593 | ||
1594 | /* If FILENAME has an ARCHIVE_EXT or MODULE_EXT extension, try to | |
1595 | open the FILENAME as passed. Otherwise try appending ARCHIVE_EXT, | |
1596 | and if a file is still not found try again with MODULE_EXT appended | |
1597 | instead. */ | |
1598 | lt_dlhandle | |
1599 | lt_dlopenext (const char *filename) | |
1600 | { | |
1601 | lt_dlhandle handle = 0; | |
1602 | lt_dladvise advise; | |
1603 | ||
1604 | if (!lt_dladvise_init (&advise) && !lt_dladvise_ext (&advise)) | |
1605 | handle = lt_dlopenadvise (filename, advise); | |
1606 | ||
1607 | lt_dladvise_destroy (&advise); | |
1608 | return handle; | |
1609 | } | |
d9898ee8 | 1610 | |
d9898ee8 | 1611 | |
8d138742 CE |
1612 | lt_dlhandle |
1613 | lt_dlopenadvise (const char *filename, lt_dladvise advise) | |
1614 | { | |
1615 | lt_dlhandle handle = 0; | |
1616 | int errors = 0; | |
1617 | ||
1618 | /* Can't have symbols hidden and visible at the same time! */ | |
1619 | if (advise && advise->is_symlocal && advise->is_symglobal) | |
d9898ee8 | 1620 | { |
8d138742 CE |
1621 | LT__SETERROR (CONFLICTING_FLAGS); |
1622 | return 0; | |
d9898ee8 | 1623 | } |
1624 | ||
8d138742 CE |
1625 | if (!filename |
1626 | || !advise | |
1627 | || !advise->try_ext | |
1628 | || has_library_ext (filename)) | |
d9898ee8 | 1629 | { |
8d138742 CE |
1630 | /* Just incase we missed a code path in try_dlopen() that reports |
1631 | an error, but forgot to reset handle... */ | |
1632 | if (try_dlopen (&handle, filename, NULL, advise) != 0) | |
d9898ee8 | 1633 | return 0; |
1634 | ||
8d138742 | 1635 | return handle; |
d9898ee8 | 1636 | } |
8d138742 | 1637 | else if (filename && *filename) |
d9898ee8 | 1638 | { |
d9898ee8 | 1639 | |
8d138742 CE |
1640 | /* First try appending ARCHIVE_EXT. */ |
1641 | errors += try_dlopen (&handle, filename, archive_ext, advise); | |
d9898ee8 | 1642 | |
8d138742 CE |
1643 | /* If we found FILENAME, stop searching -- whether we were able to |
1644 | load the file as a module or not. If the file exists but loading | |
1645 | failed, it is better to return an error message here than to | |
1646 | report FILE_NOT_FOUND when the alternatives (foo.so etc) are not | |
1647 | in the module search path. */ | |
1648 | if (handle || ((errors > 0) && !file_not_found ())) | |
1649 | return handle; | |
1650 | ||
1651 | #if defined(LT_MODULE_EXT) | |
1652 | /* Try appending SHLIB_EXT. */ | |
1653 | errors = try_dlopen (&handle, filename, shlib_ext, advise); | |
1654 | ||
1655 | /* As before, if the file was found but loading failed, return now | |
1656 | with the current error message. */ | |
1657 | if (handle || ((errors > 0) && !file_not_found ())) | |
1658 | return handle; | |
d9898ee8 | 1659 | #endif |
8d138742 | 1660 | } |
d9898ee8 | 1661 | |
1662 | /* Still here? Then we really did fail to locate any of the file | |
1663 | names we tried. */ | |
8d138742 | 1664 | LT__SETERROR (FILE_NOT_FOUND); |
d9898ee8 | 1665 | return 0; |
1666 | } | |
1667 | ||
1668 | ||
1669 | static int | |
8d138742 CE |
1670 | lt_argz_insert (char **pargz, size_t *pargz_len, char *before, |
1671 | const char *entry) | |
d9898ee8 | 1672 | { |
1673 | error_t error; | |
1674 | ||
1675 | /* Prior to Sep 8, 2005, newlib had a bug where argz_insert(pargz, | |
1676 | pargz_len, NULL, entry) failed with EINVAL. */ | |
1677 | if (before) | |
1678 | error = argz_insert (pargz, pargz_len, before, entry); | |
1679 | else | |
8d138742 | 1680 | error = argz_append (pargz, pargz_len, entry, 1 + strlen (entry)); |
d9898ee8 | 1681 | |
1682 | if (error) | |
1683 | { | |
1684 | switch (error) | |
1685 | { | |
1686 | case ENOMEM: | |
8d138742 | 1687 | LT__SETERROR (NO_MEMORY); |
d9898ee8 | 1688 | break; |
1689 | default: | |
8d138742 | 1690 | LT__SETERROR (UNKNOWN); |
d9898ee8 | 1691 | break; |
1692 | } | |
1693 | return 1; | |
1694 | } | |
1695 | ||
1696 | return 0; | |
1697 | } | |
1698 | ||
1699 | static int | |
8d138742 | 1700 | lt_argz_insertinorder (char **pargz, size_t *pargz_len, const char *entry) |
d9898ee8 | 1701 | { |
1702 | char *before = 0; | |
1703 | ||
1704 | assert (pargz); | |
1705 | assert (pargz_len); | |
1706 | assert (entry && *entry); | |
1707 | ||
1708 | if (*pargz) | |
1709 | while ((before = argz_next (*pargz, *pargz_len, before))) | |
1710 | { | |
1711 | int cmp = strcmp (entry, before); | |
1712 | ||
1713 | if (cmp < 0) break; | |
1714 | if (cmp == 0) return 0; /* No duplicates! */ | |
1715 | } | |
1716 | ||
1717 | return lt_argz_insert (pargz, pargz_len, before, entry); | |
1718 | } | |
1719 | ||
1720 | static int | |
8d138742 CE |
1721 | lt_argz_insertdir (char **pargz, size_t *pargz_len, const char *dirnam, |
1722 | struct dirent *dp) | |
d9898ee8 | 1723 | { |
1724 | char *buf = 0; | |
1725 | size_t buf_len = 0; | |
1726 | char *end = 0; | |
1727 | size_t end_offset = 0; | |
1728 | size_t dir_len = 0; | |
1729 | int errors = 0; | |
1730 | ||
1731 | assert (pargz); | |
1732 | assert (pargz_len); | |
1733 | assert (dp); | |
1734 | ||
1735 | dir_len = LT_STRLEN (dirnam); | |
8d138742 | 1736 | end = dp->d_name + D_NAMLEN(dp); |
d9898ee8 | 1737 | |
1738 | /* Ignore version numbers. */ | |
1739 | { | |
1740 | char *p; | |
1741 | for (p = end; p -1 > dp->d_name; --p) | |
1742 | if (strchr (".0123456789", p[-1]) == 0) | |
1743 | break; | |
1744 | ||
1745 | if (*p == '.') | |
1746 | end = p; | |
1747 | } | |
1748 | ||
1749 | /* Ignore filename extension. */ | |
1750 | { | |
1751 | char *p; | |
1752 | for (p = end -1; p > dp->d_name; --p) | |
1753 | if (*p == '.') | |
1754 | { | |
1755 | end = p; | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* Prepend the directory name. */ | |
1761 | end_offset = end - dp->d_name; | |
1762 | buf_len = dir_len + 1+ end_offset; | |
8d138742 | 1763 | buf = MALLOC (char, 1+ buf_len); |
d9898ee8 | 1764 | if (!buf) |
1765 | return ++errors; | |
1766 | ||
1767 | assert (buf); | |
1768 | ||
1769 | strcpy (buf, dirnam); | |
1770 | strcat (buf, "/"); | |
1771 | strncat (buf, dp->d_name, end_offset); | |
1772 | buf[buf_len] = LT_EOS_CHAR; | |
1773 | ||
1774 | /* Try to insert (in order) into ARGZ/ARGZ_LEN. */ | |
1775 | if (lt_argz_insertinorder (pargz, pargz_len, buf) != 0) | |
1776 | ++errors; | |
1777 | ||
8d138742 | 1778 | FREE (buf); |
d9898ee8 | 1779 | |
1780 | return errors; | |
1781 | } | |
1782 | ||
1783 | static int | |
8d138742 | 1784 | list_files_by_dir (const char *dirnam, char **pargz, size_t *pargz_len) |
d9898ee8 | 1785 | { |
1786 | DIR *dirp = 0; | |
1787 | int errors = 0; | |
1788 | ||
1789 | assert (dirnam && *dirnam); | |
1790 | assert (pargz); | |
1791 | assert (pargz_len); | |
1792 | assert (dirnam[LT_STRLEN(dirnam) -1] != '/'); | |
1793 | ||
1794 | dirp = opendir (dirnam); | |
1795 | if (dirp) | |
1796 | { | |
1797 | struct dirent *dp = 0; | |
1798 | ||
1799 | while ((dp = readdir (dirp))) | |
1800 | if (dp->d_name[0] != '.') | |
1801 | if (lt_argz_insertdir (pargz, pargz_len, dirnam, dp)) | |
1802 | { | |
1803 | ++errors; | |
1804 | break; | |
1805 | } | |
1806 | ||
1807 | closedir (dirp); | |
1808 | } | |
1809 | else | |
1810 | ++errors; | |
1811 | ||
1812 | return errors; | |
1813 | } | |
1814 | ||
1815 | ||
1816 | /* If there are any files in DIRNAME, call the function passed in | |
1817 | DATA1 (with the name of each file and DATA2 as arguments). */ | |
1818 | static int | |
8d138742 | 1819 | foreachfile_callback (char *dirname, void *data1, void *data2) |
d9898ee8 | 1820 | { |
8d138742 | 1821 | file_worker_func *func = *(file_worker_func **) data1; |
d9898ee8 | 1822 | |
1823 | int is_done = 0; | |
1824 | char *argz = 0; | |
1825 | size_t argz_len = 0; | |
1826 | ||
1827 | if (list_files_by_dir (dirname, &argz, &argz_len) != 0) | |
1828 | goto cleanup; | |
1829 | if (!argz) | |
1830 | goto cleanup; | |
1831 | ||
1832 | { | |
1833 | char *filename = 0; | |
1834 | while ((filename = argz_next (argz, argz_len, filename))) | |
1835 | if ((is_done = (*func) (filename, data2))) | |
1836 | break; | |
1837 | } | |
1838 | ||
1839 | cleanup: | |
8d138742 | 1840 | FREE (argz); |
d9898ee8 | 1841 | |
1842 | return is_done; | |
1843 | } | |
1844 | ||
1845 | ||
1846 | /* Call FUNC for each unique extensionless file in SEARCH_PATH, along | |
1847 | with DATA. The filenames passed to FUNC would be suitable for | |
1848 | passing to lt_dlopenext. The extensions are stripped so that | |
1849 | individual modules do not generate several entries (e.g. libfoo.la, | |
1850 | libfoo.so, libfoo.so.1, libfoo.so.1.0.0). If SEARCH_PATH is NULL, | |
1851 | then the same directories that lt_dlopen would search are examined. */ | |
1852 | int | |
8d138742 CE |
1853 | lt_dlforeachfile (const char *search_path, |
1854 | int (*func) (const char *filename, void *data), | |
1855 | void *data) | |
d9898ee8 | 1856 | { |
1857 | int is_done = 0; | |
8d138742 | 1858 | file_worker_func **fpptr = &func; |
d9898ee8 | 1859 | |
1860 | if (search_path) | |
1861 | { | |
1862 | /* If a specific path was passed, search only the directories | |
1863 | listed in it. */ | |
1864 | is_done = foreach_dirinpath (search_path, 0, | |
8d138742 | 1865 | foreachfile_callback, fpptr, data); |
d9898ee8 | 1866 | } |
1867 | else | |
1868 | { | |
1869 | /* Otherwise search the default paths. */ | |
1870 | is_done = foreach_dirinpath (user_search_path, 0, | |
8d138742 | 1871 | foreachfile_callback, fpptr, data); |
d9898ee8 | 1872 | if (!is_done) |
1873 | { | |
8d138742 CE |
1874 | is_done = foreach_dirinpath (getenv(LTDL_SEARCHPATH_VAR), 0, |
1875 | foreachfile_callback, fpptr, data); | |
d9898ee8 | 1876 | } |
1877 | ||
8d138742 | 1878 | #if defined(LT_MODULE_PATH_VAR) |
d9898ee8 | 1879 | if (!is_done) |
1880 | { | |
8d138742 CE |
1881 | is_done = foreach_dirinpath (getenv(LT_MODULE_PATH_VAR), 0, |
1882 | foreachfile_callback, fpptr, data); | |
d9898ee8 | 1883 | } |
1884 | #endif | |
8d138742 CE |
1885 | #if defined(LT_DLSEARCH_PATH) |
1886 | if (!is_done && *sys_dlsearch_path) | |
d9898ee8 | 1887 | { |
8d138742 CE |
1888 | is_done = foreach_dirinpath (sys_dlsearch_path, 0, |
1889 | foreachfile_callback, fpptr, data); | |
d9898ee8 | 1890 | } |
1891 | #endif | |
1892 | } | |
1893 | ||
1894 | return is_done; | |
1895 | } | |
1896 | ||
1897 | int | |
8d138742 | 1898 | lt_dlclose (lt_dlhandle handle) |
d9898ee8 | 1899 | { |
1900 | lt_dlhandle cur, last; | |
1901 | int errors = 0; | |
1902 | ||
d9898ee8 | 1903 | /* check whether the handle is valid */ |
1904 | last = cur = handles; | |
1905 | while (cur && handle != cur) | |
1906 | { | |
1907 | last = cur; | |
1908 | cur = cur->next; | |
1909 | } | |
1910 | ||
1911 | if (!cur) | |
1912 | { | |
8d138742 | 1913 | LT__SETERROR (INVALID_HANDLE); |
d9898ee8 | 1914 | ++errors; |
1915 | goto done; | |
1916 | } | |
1917 | ||
8d138742 CE |
1918 | cur = handle; |
1919 | cur->info.ref_count--; | |
d9898ee8 | 1920 | |
1921 | /* Note that even with resident modules, we must track the ref_count | |
1922 | correctly incase the user decides to reset the residency flag | |
1923 | later (even though the API makes no provision for that at the | |
1924 | moment). */ | |
8d138742 | 1925 | if (cur->info.ref_count <= 0 && !LT_DLIS_RESIDENT (cur)) |
d9898ee8 | 1926 | { |
8d138742 | 1927 | lt_user_data data = cur->vtable->dlloader_data; |
d9898ee8 | 1928 | |
8d138742 | 1929 | if (cur != handles) |
d9898ee8 | 1930 | { |
8d138742 | 1931 | last->next = cur->next; |
d9898ee8 | 1932 | } |
1933 | else | |
1934 | { | |
8d138742 | 1935 | handles = cur->next; |
d9898ee8 | 1936 | } |
1937 | ||
8d138742 CE |
1938 | errors += cur->vtable->module_close (data, cur->module); |
1939 | errors += unload_deplibs (handle); | |
d9898ee8 | 1940 | |
1941 | /* It is up to the callers to free the data itself. */ | |
8d138742 | 1942 | FREE (cur->interface_data); |
d9898ee8 | 1943 | |
8d138742 CE |
1944 | FREE (cur->info.filename); |
1945 | FREE (cur->info.name); | |
1946 | FREE (cur); | |
d9898ee8 | 1947 | |
1948 | goto done; | |
1949 | } | |
1950 | ||
1951 | if (LT_DLIS_RESIDENT (handle)) | |
1952 | { | |
8d138742 | 1953 | LT__SETERROR (CLOSE_RESIDENT_MODULE); |
d9898ee8 | 1954 | ++errors; |
1955 | } | |
1956 | ||
1957 | done: | |
d9898ee8 | 1958 | return errors; |
1959 | } | |
1960 | ||
8d138742 CE |
1961 | void * |
1962 | lt_dlsym (lt_dlhandle place, const char *symbol) | |
d9898ee8 | 1963 | { |
1964 | size_t lensym; | |
1965 | char lsym[LT_SYMBOL_LENGTH]; | |
1966 | char *sym; | |
8d138742 | 1967 | void *address; |
d9898ee8 | 1968 | lt_user_data data; |
8d138742 | 1969 | lt_dlhandle handle; |
d9898ee8 | 1970 | |
8d138742 | 1971 | if (!place) |
d9898ee8 | 1972 | { |
8d138742 | 1973 | LT__SETERROR (INVALID_HANDLE); |
d9898ee8 | 1974 | return 0; |
1975 | } | |
1976 | ||
8d138742 CE |
1977 | handle = place; |
1978 | ||
d9898ee8 | 1979 | if (!symbol) |
1980 | { | |
8d138742 | 1981 | LT__SETERROR (SYMBOL_NOT_FOUND); |
d9898ee8 | 1982 | return 0; |
1983 | } | |
1984 | ||
8d138742 | 1985 | lensym = LT_STRLEN (symbol) + LT_STRLEN (handle->vtable->sym_prefix) |
d9898ee8 | 1986 | + LT_STRLEN (handle->info.name); |
1987 | ||
1988 | if (lensym + LT_SYMBOL_OVERHEAD < LT_SYMBOL_LENGTH) | |
1989 | { | |
1990 | sym = lsym; | |
1991 | } | |
1992 | else | |
1993 | { | |
8d138742 | 1994 | sym = MALLOC (char, lensym + LT_SYMBOL_OVERHEAD + 1); |
d9898ee8 | 1995 | if (!sym) |
1996 | { | |
8d138742 | 1997 | LT__SETERROR (BUFFER_OVERFLOW); |
d9898ee8 | 1998 | return 0; |
1999 | } | |
2000 | } | |
2001 | ||
8d138742 | 2002 | data = handle->vtable->dlloader_data; |
d9898ee8 | 2003 | if (handle->info.name) |
2004 | { | |
2005 | const char *saved_error; | |
2006 | ||
8d138742 | 2007 | LT__GETERROR (saved_error); |
d9898ee8 | 2008 | |
2009 | /* this is a libtool module */ | |
8d138742 | 2010 | if (handle->vtable->sym_prefix) |
d9898ee8 | 2011 | { |
8d138742 | 2012 | strcpy(sym, handle->vtable->sym_prefix); |
d9898ee8 | 2013 | strcat(sym, handle->info.name); |
2014 | } | |
2015 | else | |
2016 | { | |
2017 | strcpy(sym, handle->info.name); | |
2018 | } | |
2019 | ||
2020 | strcat(sym, "_LTX_"); | |
2021 | strcat(sym, symbol); | |
2022 | ||
2023 | /* try "modulename_LTX_symbol" */ | |
8d138742 | 2024 | address = handle->vtable->find_sym (data, handle->module, sym); |
d9898ee8 | 2025 | if (address) |
2026 | { | |
2027 | if (sym != lsym) | |
2028 | { | |
8d138742 | 2029 | FREE (sym); |
d9898ee8 | 2030 | } |
2031 | return address; | |
2032 | } | |
8d138742 | 2033 | LT__SETERRORSTR (saved_error); |
d9898ee8 | 2034 | } |
2035 | ||
2036 | /* otherwise try "symbol" */ | |
8d138742 | 2037 | if (handle->vtable->sym_prefix) |
d9898ee8 | 2038 | { |
8d138742 | 2039 | strcpy(sym, handle->vtable->sym_prefix); |
d9898ee8 | 2040 | strcat(sym, symbol); |
2041 | } | |
2042 | else | |
2043 | { | |
2044 | strcpy(sym, symbol); | |
2045 | } | |
2046 | ||
8d138742 | 2047 | address = handle->vtable->find_sym (data, handle->module, sym); |
d9898ee8 | 2048 | if (sym != lsym) |
2049 | { | |
8d138742 | 2050 | FREE (sym); |
d9898ee8 | 2051 | } |
2052 | ||
2053 | return address; | |
2054 | } | |
2055 | ||
2056 | const char * | |
8d138742 | 2057 | lt_dlerror (void) |
d9898ee8 | 2058 | { |
2059 | const char *error; | |
2060 | ||
8d138742 CE |
2061 | LT__GETERROR (error); |
2062 | LT__SETERRORSTR (0); | |
d9898ee8 | 2063 | |
2064 | return error ? error : NULL; | |
2065 | } | |
2066 | ||
2067 | static int | |
8d138742 | 2068 | lt_dlpath_insertdir (char **ppath, char *before, const char *dir) |
d9898ee8 | 2069 | { |
2070 | int errors = 0; | |
2071 | char *canonical = 0; | |
2072 | char *argz = 0; | |
2073 | size_t argz_len = 0; | |
2074 | ||
2075 | assert (ppath); | |
2076 | assert (dir && *dir); | |
2077 | ||
2078 | if (canonicalize_path (dir, &canonical) != 0) | |
2079 | { | |
2080 | ++errors; | |
2081 | goto cleanup; | |
2082 | } | |
2083 | ||
2084 | assert (canonical && *canonical); | |
2085 | ||
2086 | /* If *PPATH is empty, set it to DIR. */ | |
2087 | if (*ppath == 0) | |
2088 | { | |
2089 | assert (!before); /* BEFORE cannot be set without PPATH. */ | |
2090 | assert (dir); /* Without DIR, don't call this function! */ | |
2091 | ||
8d138742 | 2092 | *ppath = lt__strdup (dir); |
d9898ee8 | 2093 | if (*ppath == 0) |
2094 | ++errors; | |
2095 | ||
8d138742 | 2096 | goto cleanup; |
d9898ee8 | 2097 | } |
2098 | ||
2099 | assert (ppath && *ppath); | |
2100 | ||
2101 | if (argzize_path (*ppath, &argz, &argz_len) != 0) | |
2102 | { | |
2103 | ++errors; | |
2104 | goto cleanup; | |
2105 | } | |
2106 | ||
2107 | /* Convert BEFORE into an equivalent offset into ARGZ. This only works | |
2108 | if *PPATH is already canonicalized, and hence does not change length | |
2109 | with respect to ARGZ. We canonicalize each entry as it is added to | |
2110 | the search path, and don't call this function with (uncanonicalized) | |
2111 | user paths, so this is a fair assumption. */ | |
2112 | if (before) | |
2113 | { | |
2114 | assert (*ppath <= before); | |
8d138742 | 2115 | assert ((int) (before - *ppath) <= (int) strlen (*ppath)); |
d9898ee8 | 2116 | |
2117 | before = before - *ppath + argz; | |
2118 | } | |
2119 | ||
2120 | if (lt_argz_insert (&argz, &argz_len, before, dir) != 0) | |
2121 | { | |
2122 | ++errors; | |
2123 | goto cleanup; | |
2124 | } | |
2125 | ||
2126 | argz_stringify (argz, argz_len, LT_PATHSEP_CHAR); | |
8d138742 | 2127 | MEMREASSIGN(*ppath, argz); |
d9898ee8 | 2128 | |
2129 | cleanup: | |
8d138742 CE |
2130 | FREE (argz); |
2131 | FREE (canonical); | |
d9898ee8 | 2132 | |
2133 | return errors; | |
2134 | } | |
2135 | ||
2136 | int | |
8d138742 | 2137 | lt_dladdsearchdir (const char *search_dir) |
d9898ee8 | 2138 | { |
2139 | int errors = 0; | |
2140 | ||
2141 | if (search_dir && *search_dir) | |
2142 | { | |
d9898ee8 | 2143 | if (lt_dlpath_insertdir (&user_search_path, 0, search_dir) != 0) |
2144 | ++errors; | |
d9898ee8 | 2145 | } |
2146 | ||
2147 | return errors; | |
2148 | } | |
2149 | ||
2150 | int | |
8d138742 | 2151 | lt_dlinsertsearchdir (const char *before, const char *search_dir) |
d9898ee8 | 2152 | { |
2153 | int errors = 0; | |
2154 | ||
2155 | if (before) | |
2156 | { | |
d9898ee8 | 2157 | if ((before < user_search_path) |
2158 | || (before >= user_search_path + LT_STRLEN (user_search_path))) | |
2159 | { | |
8d138742 | 2160 | LT__SETERROR (INVALID_POSITION); |
d9898ee8 | 2161 | return 1; |
2162 | } | |
d9898ee8 | 2163 | } |
2164 | ||
2165 | if (search_dir && *search_dir) | |
2166 | { | |
d9898ee8 | 2167 | if (lt_dlpath_insertdir (&user_search_path, |
2168 | (char *) before, search_dir) != 0) | |
2169 | { | |
2170 | ++errors; | |
2171 | } | |
d9898ee8 | 2172 | } |
2173 | ||
2174 | return errors; | |
2175 | } | |
2176 | ||
2177 | int | |
8d138742 | 2178 | lt_dlsetsearchpath (const char *search_path) |
d9898ee8 | 2179 | { |
2180 | int errors = 0; | |
2181 | ||
8d138742 | 2182 | FREE (user_search_path); |
d9898ee8 | 2183 | |
2184 | if (!search_path || !LT_STRLEN (search_path)) | |
2185 | { | |
2186 | return errors; | |
2187 | } | |
2188 | ||
d9898ee8 | 2189 | if (canonicalize_path (search_path, &user_search_path) != 0) |
2190 | ++errors; | |
d9898ee8 | 2191 | |
2192 | return errors; | |
2193 | } | |
2194 | ||
2195 | const char * | |
8d138742 | 2196 | lt_dlgetsearchpath (void) |
d9898ee8 | 2197 | { |
2198 | const char *saved_path; | |
2199 | ||
d9898ee8 | 2200 | saved_path = user_search_path; |
d9898ee8 | 2201 | |
2202 | return saved_path; | |
2203 | } | |
2204 | ||
2205 | int | |
8d138742 | 2206 | lt_dlmakeresident (lt_dlhandle handle) |
d9898ee8 | 2207 | { |
2208 | int errors = 0; | |
2209 | ||
2210 | if (!handle) | |
2211 | { | |
8d138742 | 2212 | LT__SETERROR (INVALID_HANDLE); |
d9898ee8 | 2213 | ++errors; |
2214 | } | |
2215 | else | |
2216 | { | |
8d138742 | 2217 | handle->info.is_resident = 1; |
d9898ee8 | 2218 | } |
2219 | ||
2220 | return errors; | |
2221 | } | |
2222 | ||
2223 | int | |
8d138742 | 2224 | lt_dlisresident (lt_dlhandle handle) |
d9898ee8 | 2225 | { |
2226 | if (!handle) | |
2227 | { | |
8d138742 | 2228 | LT__SETERROR (INVALID_HANDLE); |
d9898ee8 | 2229 | return -1; |
2230 | } | |
2231 | ||
2232 | return LT_DLIS_RESIDENT (handle); | |
2233 | } | |
2234 | ||
2235 | ||
2236 | ||
d9898ee8 | 2237 | /* --- MODULE INFORMATION --- */ |
2238 | ||
8d138742 CE |
2239 | typedef struct { |
2240 | const char *id_string; | |
2241 | lt_dlhandle_interface *iface; | |
2242 | } lt__interface_id; | |
d9898ee8 | 2243 | |
8d138742 CE |
2244 | lt_dlinterface_id |
2245 | lt_dlinterface_register (const char *id_string, lt_dlhandle_interface *iface) | |
d9898ee8 | 2246 | { |
8d138742 | 2247 | lt__interface_id *interface_id = (lt__interface_id *) lt__malloc (sizeof *interface_id); |
d9898ee8 | 2248 | |
8d138742 CE |
2249 | /* If lt__malloc fails, it will LT__SETERROR (NO_MEMORY), which |
2250 | can then be detected with lt_dlerror() if we return 0. */ | |
2251 | if (interface_id) | |
d9898ee8 | 2252 | { |
8d138742 CE |
2253 | interface_id->id_string = lt__strdup (id_string); |
2254 | if (!interface_id->id_string) | |
2255 | FREE (interface_id); | |
2256 | else | |
2257 | interface_id->iface = iface; | |
d9898ee8 | 2258 | } |
2259 | ||
8d138742 | 2260 | return (lt_dlinterface_id) interface_id; |
d9898ee8 | 2261 | } |
2262 | ||
8d138742 | 2263 | void lt_dlinterface_free (lt_dlinterface_id key) |
d9898ee8 | 2264 | { |
8d138742 CE |
2265 | lt__interface_id *interface_id = (lt__interface_id *)key; |
2266 | FREE (interface_id->id_string); | |
2267 | FREE (interface_id); | |
d9898ee8 | 2268 | } |
2269 | ||
8d138742 CE |
2270 | void * |
2271 | lt_dlcaller_set_data (lt_dlinterface_id key, lt_dlhandle handle, void *data) | |
d9898ee8 | 2272 | { |
2273 | int n_elements = 0; | |
8d138742 CE |
2274 | void *stale = (void *) 0; |
2275 | lt_dlhandle cur = handle; | |
d9898ee8 | 2276 | int i; |
2277 | ||
8d138742 CE |
2278 | if (cur->interface_data) |
2279 | while (cur->interface_data[n_elements].key) | |
d9898ee8 | 2280 | ++n_elements; |
2281 | ||
2282 | for (i = 0; i < n_elements; ++i) | |
2283 | { | |
8d138742 | 2284 | if (cur->interface_data[i].key == key) |
d9898ee8 | 2285 | { |
8d138742 | 2286 | stale = cur->interface_data[i].data; |
d9898ee8 | 2287 | break; |
2288 | } | |
2289 | } | |
2290 | ||
8d138742 | 2291 | /* Ensure that there is enough room in this handle's interface_data |
d9898ee8 | 2292 | array to accept a new element (and an empty end marker). */ |
2293 | if (i == n_elements) | |
2294 | { | |
8d138742 CE |
2295 | lt_interface_data *temp |
2296 | = REALLOC (lt_interface_data, cur->interface_data, 2+ n_elements); | |
d9898ee8 | 2297 | |
2298 | if (!temp) | |
2299 | { | |
2300 | stale = 0; | |
2301 | goto done; | |
2302 | } | |
2303 | ||
8d138742 | 2304 | cur->interface_data = temp; |
d9898ee8 | 2305 | |
8d138742 CE |
2306 | /* We only need this if we needed to allocate a new interface_data. */ |
2307 | cur->interface_data[i].key = key; | |
2308 | cur->interface_data[1+ i].key = 0; | |
d9898ee8 | 2309 | } |
2310 | ||
8d138742 | 2311 | cur->interface_data[i].data = data; |
d9898ee8 | 2312 | |
2313 | done: | |
d9898ee8 | 2314 | return stale; |
2315 | } | |
2316 | ||
8d138742 CE |
2317 | void * |
2318 | lt_dlcaller_get_data (lt_dlinterface_id key, lt_dlhandle handle) | |
d9898ee8 | 2319 | { |
8d138742 CE |
2320 | void *result = (void *) 0; |
2321 | lt_dlhandle cur = handle; | |
d9898ee8 | 2322 | |
2323 | /* Locate the index of the element with a matching KEY. */ | |
8d138742 | 2324 | if (cur->interface_data) |
d9898ee8 | 2325 | { |
8d138742 CE |
2326 | int i; |
2327 | for (i = 0; cur->interface_data[i].key; ++i) | |
d9898ee8 | 2328 | { |
8d138742 | 2329 | if (cur->interface_data[i].key == key) |
d9898ee8 | 2330 | { |
8d138742 | 2331 | result = cur->interface_data[i].data; |
d9898ee8 | 2332 | break; |
2333 | } | |
2334 | } | |
d9898ee8 | 2335 | } |
2336 | ||
8d138742 | 2337 | return result; |
d9898ee8 | 2338 | } |
2339 | ||
8d138742 CE |
2340 | const lt_dlinfo * |
2341 | lt_dlgetinfo (lt_dlhandle handle) | |
d9898ee8 | 2342 | { |
8d138742 CE |
2343 | if (!handle) |
2344 | { | |
2345 | LT__SETERROR (INVALID_HANDLE); | |
2346 | return 0; | |
2347 | } | |
d9898ee8 | 2348 | |
8d138742 | 2349 | return &(handle->info); |
d9898ee8 | 2350 | } |
2351 | ||
8d138742 CE |
2352 | |
2353 | lt_dlhandle | |
2354 | lt_dlhandle_iterate (lt_dlinterface_id iface, lt_dlhandle place) | |
d9898ee8 | 2355 | { |
8d138742 CE |
2356 | lt_dlhandle handle = place; |
2357 | lt__interface_id *iterator = (lt__interface_id *) iface; | |
d9898ee8 | 2358 | |
8d138742 CE |
2359 | assert (iface); /* iface is a required argument */ |
2360 | ||
2361 | if (!handle) | |
2362 | handle = handles; | |
d9898ee8 | 2363 | else |
8d138742 CE |
2364 | handle = handle->next; |
2365 | ||
2366 | /* advance while the interface check fails */ | |
2367 | while (handle && iterator->iface | |
2368 | && ((*iterator->iface) (handle, iterator->id_string) != 0)) | |
d9898ee8 | 2369 | { |
8d138742 | 2370 | handle = handle->next; |
d9898ee8 | 2371 | } |
2372 | ||
8d138742 | 2373 | return handle; |
d9898ee8 | 2374 | } |
2375 | ||
8d138742 CE |
2376 | |
2377 | lt_dlhandle | |
2378 | lt_dlhandle_fetch (lt_dlinterface_id iface, const char *module_name) | |
d9898ee8 | 2379 | { |
8d138742 | 2380 | lt_dlhandle handle = 0; |
d9898ee8 | 2381 | |
8d138742 CE |
2382 | assert (iface); /* iface is a required argument */ |
2383 | ||
2384 | while ((handle = lt_dlhandle_iterate (iface, handle))) | |
d9898ee8 | 2385 | { |
8d138742 CE |
2386 | lt_dlhandle cur = handle; |
2387 | if (cur && cur->info.name && streq (cur->info.name, module_name)) | |
2388 | break; | |
d9898ee8 | 2389 | } |
2390 | ||
8d138742 | 2391 | return handle; |
d9898ee8 | 2392 | } |
2393 | ||
8d138742 CE |
2394 | |
2395 | int | |
2396 | lt_dlhandle_map (lt_dlinterface_id iface, | |
2397 | int (*func) (lt_dlhandle handle, void *data), void *data) | |
d9898ee8 | 2398 | { |
8d138742 CE |
2399 | lt__interface_id *iterator = (lt__interface_id *) iface; |
2400 | lt_dlhandle cur = handles; | |
d9898ee8 | 2401 | |
8d138742 CE |
2402 | assert (iface); /* iface is a required argument */ |
2403 | ||
2404 | while (cur) | |
d9898ee8 | 2405 | { |
8d138742 CE |
2406 | int errorcode = 0; |
2407 | ||
2408 | /* advance while the interface check fails */ | |
2409 | while (cur && iterator->iface | |
2410 | && ((*iterator->iface) (cur, iterator->id_string) != 0)) | |
d9898ee8 | 2411 | { |
8d138742 | 2412 | cur = cur->next; |
d9898ee8 | 2413 | } |
8d138742 CE |
2414 | |
2415 | if ((errorcode = (*func) (cur, data)) != 0) | |
2416 | return errorcode; | |
d9898ee8 | 2417 | } |
d9898ee8 | 2418 | |
8d138742 | 2419 | return 0; |
d9898ee8 | 2420 | } |