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45eca4d1 | 1 | /* Copyright (C) 1999, 2000 Free Software Foundation, Inc. |
591e1ffb UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Andreas Jaeger <aj@suse.de>, 1999. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
7b0d235c | 20 | #include <alloca.h> |
591e1ffb UD |
21 | #include <argp.h> |
22 | #include <dirent.h> | |
9c95d361 | 23 | #include <elf.h> |
591e1ffb UD |
24 | #include <error.h> |
25 | #include <errno.h> | |
26 | #include <libintl.h> | |
27 | #include <stdio.h> | |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <unistd.h> | |
31 | #include <sys/fcntl.h> | |
32 | #include <sys/mman.h> | |
33 | #include <sys/stat.h> | |
34 | #include <sys/types.h> | |
35 | ||
36 | #include "ldconfig.h" | |
45eca4d1 | 37 | #include "dl-cache.h" |
591e1ffb | 38 | |
45eca4d1 UD |
39 | /* We don't need this here - silence the compiler. */ |
40 | #define _dl_sysdep_message(string, args...) do {} while (0); | |
41 | ||
42 | #include "dl-procinfo.h" | |
591e1ffb UD |
43 | |
44 | #ifndef LD_SO_CONF | |
8ca91b36 | 45 | # define LD_SO_CONF SYSCONFDIR "/ld.so.conf" |
591e1ffb UD |
46 | #endif |
47 | ||
48 | /* Get libc version number. */ | |
49 | #include <version.h> | |
50 | ||
51 | #define PACKAGE _libc_intl_domainname | |
52 | ||
53 | struct lib_entry | |
54 | { | |
55 | int flags; | |
45eca4d1 | 56 | unsigned long int hwcap; |
591e1ffb UD |
57 | char *lib; |
58 | char *path; | |
59 | }; | |
60 | ||
61 | static const struct | |
62 | { | |
63 | const char *name; | |
64 | int flag; | |
65 | } lib_types [] = | |
66 | { | |
67 | {"libc4", FLAG_LIBC4}, | |
68 | {"libc5", FLAG_ELF_LIBC5}, | |
69 | {"libc6", FLAG_ELF_LIBC6}, | |
70 | {"glibc2", FLAG_ELF_LIBC6} | |
45eca4d1 | 71 | }; |
591e1ffb UD |
72 | |
73 | ||
74 | /* List of directories to handle. */ | |
75 | struct dir_entry | |
76 | { | |
77 | char *path; | |
78 | int flag; | |
79 | struct dir_entry *next; | |
80 | }; | |
81 | ||
82 | /* The list is unsorted, contains no duplicates. Entries are added at | |
83 | the end. */ | |
84 | static struct dir_entry *dir_entries; | |
85 | ||
86 | /* Flags for different options. */ | |
87 | /* Print Cache. */ | |
88 | static int opt_print_cache = 0; | |
89 | ||
90 | /* Be verbose. */ | |
91 | int opt_verbose = 0; | |
92 | ||
45eca4d1 UD |
93 | /* Format to support. */ |
94 | /* 0: only libc5/glibc2; 1: both; 2: only glibc 2.2. */ | |
95 | int opt_format = 1; | |
96 | ||
591e1ffb UD |
97 | /* Build cache. */ |
98 | static int opt_build_cache = 1; | |
99 | ||
100 | /* Generate links. */ | |
101 | static int opt_link = 1; | |
102 | ||
103 | /* Only process directories specified on the command line. */ | |
104 | static int opt_only_cline = 0; | |
105 | ||
106 | /* Path to root for chroot. */ | |
107 | static char *opt_chroot; | |
108 | ||
b85697f6 UD |
109 | /* Manually link given shared libraries. */ |
110 | static int opt_manual_link = 0; | |
111 | ||
591e1ffb UD |
112 | /* Cache file to use. */ |
113 | static const char *cache_file; | |
114 | ||
115 | /* Configuration file. */ | |
116 | static const char *config_file; | |
117 | ||
118 | /* Name and version of program. */ | |
119 | static void print_version (FILE *stream, struct argp_state *state); | |
120 | void (*argp_program_version_hook) (FILE *, struct argp_state *) | |
121 | = print_version; | |
122 | ||
123 | /* Definitions of arguments for argp functions. */ | |
124 | static const struct argp_option options[] = | |
125 | { | |
126 | { "print-cache", 'p', NULL, 0, N_("Print cache"), 0}, | |
127 | { "verbose", 'v', NULL, 0, N_("Generate verbose messages"), 0}, | |
128 | { NULL, 'N', NULL, 0, N_("Don't build cache"), 0}, | |
129 | { NULL, 'X', NULL, 0, N_("Don't generate links"), 0}, | |
130 | { NULL, 'r', "ROOT", 0, N_("Change to and use ROOT as root directory"), 0}, | |
131 | { NULL, 'C', "CACHE", 0, N_("Use CACHE as cache file"), 0}, | |
132 | { NULL, 'f', "CONF", 0, N_("Use CONF as configuration file"), 0}, | |
133 | { NULL, 'n', NULL, 0, N_("Only process directories specified on the command line. Don't build cache."), 0}, | |
b85697f6 | 134 | { NULL, 'l', NULL, 0, N_("Manually link individual libraries."), 0}, |
45eca4d1 | 135 | { "format", 'c', "FORMAT", 0, N_("Format to use: new, old or compat (default)"), 0}, |
591e1ffb UD |
136 | { NULL, 0, NULL, 0, NULL, 0 } |
137 | }; | |
138 | ||
139 | /* Short description of program. */ | |
140 | static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings."); | |
141 | ||
142 | /* Prototype for option handler. */ | |
143 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
144 | ||
145 | /* Data structure to communicate with argp functions. */ | |
146 | static struct argp argp = | |
147 | { | |
148 | options, parse_opt, NULL, doc, NULL, NULL, NULL | |
149 | }; | |
150 | ||
45eca4d1 UD |
151 | /* Check if string corresponds to an important hardware capability. */ |
152 | static int | |
153 | is_hwcap (const char *name) | |
154 | { | |
155 | int hwcap_idx = _dl_string_hwcap (name); | |
8ca91b36 | 156 | |
45eca4d1 UD |
157 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & HWCAP_IMPORTANT)) |
158 | return 1; | |
159 | return 0; | |
160 | } | |
161 | ||
162 | /* Get hwcap encoding of path. */ | |
163 | static unsigned long int | |
164 | path_hwcap (const char *path) | |
165 | { | |
166 | char *str = xstrdup (path); | |
167 | char *ptr; | |
168 | unsigned long int hwcap = 0; | |
169 | unsigned long int h; | |
170 | ||
171 | size_t len; | |
172 | ||
173 | len = strlen (str); | |
174 | if (str[len] == '/') | |
175 | str[len] = '\0'; | |
176 | ||
177 | /* Search pathname from the end and check for hwcap strings. */ | |
178 | for (;;) | |
179 | { | |
180 | ptr = strrchr (str, '/'); | |
181 | ||
182 | if (ptr == NULL) | |
183 | break; | |
184 | ||
185 | h = _dl_string_hwcap (ptr+1); | |
186 | ||
187 | if (h == -1) | |
188 | break; | |
189 | hwcap += 1 << h; | |
591e1ffb | 190 | |
45eca4d1 UD |
191 | /* Search the next part of the path. */ |
192 | *ptr = '\0'; | |
193 | } | |
194 | ||
195 | free (str); | |
196 | return hwcap; | |
197 | } | |
591e1ffb UD |
198 | |
199 | /* Handle program arguments. */ | |
200 | static error_t | |
201 | parse_opt (int key, char *arg, struct argp_state *state) | |
202 | { | |
203 | switch (key) | |
204 | { | |
205 | case 'C': | |
206 | cache_file = arg; | |
207 | break; | |
208 | case 'f': | |
209 | config_file = arg; | |
210 | break; | |
b85697f6 UD |
211 | case 'l': |
212 | opt_manual_link = 1; | |
213 | break; | |
591e1ffb UD |
214 | case 'N': |
215 | opt_build_cache = 0; | |
216 | break; | |
217 | case 'n': | |
218 | opt_build_cache = 0; | |
219 | opt_only_cline = 1; | |
220 | break; | |
221 | case 'p': | |
222 | opt_print_cache = 1; | |
223 | break; | |
224 | case 'r': | |
225 | opt_chroot = arg; | |
226 | break; | |
227 | case 'v': | |
228 | opt_verbose = 1; | |
229 | break; | |
230 | case 'X': | |
231 | opt_link = 0; | |
232 | break; | |
45eca4d1 UD |
233 | case 'c': |
234 | if (strcmp (arg, "old") == 0) | |
235 | opt_format = 0; | |
236 | else if (strcmp (arg, "compat") == 0) | |
237 | opt_format = 1; | |
238 | else if (strcmp (arg, "new") == 0) | |
239 | opt_format = 2; | |
240 | break; | |
591e1ffb UD |
241 | default: |
242 | return ARGP_ERR_UNKNOWN; | |
243 | } | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | /* Print the version information. */ | |
249 | static void | |
250 | print_version (FILE *stream, struct argp_state *state) | |
251 | { | |
252 | fprintf (stream, "ldconfig (GNU %s) %s\n", PACKAGE, VERSION); | |
253 | fprintf (stream, gettext ("\ | |
254 | Copyright (C) %s Free Software Foundation, Inc.\n\ | |
255 | This is free software; see the source for copying conditions. There is NO\n\ | |
256 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ | |
45eca4d1 | 257 | "), "2000"); |
591e1ffb UD |
258 | fprintf (stream, gettext ("Written by %s.\n"), |
259 | "Andreas Jaeger"); | |
260 | } | |
261 | ||
a8fd59b0 AJ |
262 | /* Add a single directory entry. */ |
263 | static void | |
264 | add_single_dir (struct dir_entry *entry, int verbose) | |
265 | { | |
266 | struct dir_entry *ptr, *prev; | |
267 | ||
268 | ptr = dir_entries; | |
269 | prev = ptr; | |
270 | while (ptr != NULL) | |
271 | { | |
272 | /* Check for duplicates. */ | |
273 | if (strcmp (ptr->path, entry->path) == 0) | |
274 | { | |
275 | if (opt_verbose && verbose) | |
276 | error (0, 0, _("Path `%s' given more than once"), entry->path); | |
277 | /* Use the newer information. */ | |
278 | ptr->flag = entry->flag; | |
279 | free (entry); | |
280 | break; | |
281 | } | |
282 | prev = ptr; | |
283 | ptr = ptr->next; | |
284 | } | |
285 | /* Is this the first entry? */ | |
286 | if (ptr == NULL && dir_entries == NULL) | |
287 | dir_entries = entry; | |
288 | else if (ptr == NULL) | |
289 | prev->next = entry; | |
290 | } | |
291 | ||
591e1ffb UD |
292 | /* Add one directory to the list of directories to process. */ |
293 | static void | |
294 | add_dir (const char *line) | |
295 | { | |
296 | char *equal_sign; | |
a8fd59b0 | 297 | struct dir_entry *entry; |
591e1ffb | 298 | unsigned int i; |
45eca4d1 | 299 | |
591e1ffb UD |
300 | entry = xmalloc (sizeof (struct dir_entry)); |
301 | entry->next = NULL; | |
45eca4d1 | 302 | |
591e1ffb UD |
303 | /* Search for an '=' sign. */ |
304 | entry->path = xstrdup (line); | |
305 | equal_sign = strchr (entry->path, '='); | |
306 | if (equal_sign) | |
307 | { | |
308 | *equal_sign = '\0'; | |
309 | ++equal_sign; | |
310 | entry->flag = FLAG_ANY; | |
311 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types [0]); ++i) | |
312 | if (strcmp (equal_sign, lib_types[i].name) == 0) | |
313 | { | |
314 | entry->flag = lib_types[i].flag; | |
315 | break; | |
316 | } | |
317 | if (entry->flag == FLAG_ANY) | |
318 | error (0, 0, _("%s is not a known library type"), equal_sign); | |
319 | } | |
320 | else | |
321 | { | |
322 | entry->flag = FLAG_ANY; | |
323 | } | |
324 | ||
325 | /* Canonify path: for now only remove trailing slashes. */ | |
326 | i = strlen (entry->path) - 1; | |
327 | while (entry->path[i] == '/' && i > 0) | |
328 | { | |
329 | entry->path [i] = '\0'; | |
330 | --i; | |
331 | } | |
45eca4d1 | 332 | |
a8fd59b0 | 333 | add_single_dir (entry, 1); |
591e1ffb UD |
334 | } |
335 | ||
336 | ||
337 | /* Create a symbolic link from soname to libname in directory path. */ | |
338 | static void | |
339 | create_links (const char *path, const char *libname, const char *soname) | |
340 | { | |
7b0d235c | 341 | char *full_libname, *full_soname; |
591e1ffb UD |
342 | struct stat stat_lib, stat_so, lstat_so; |
343 | int do_link = 1; | |
344 | int do_remove = 1; | |
345 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 346 | |
591e1ffb | 347 | /* Get complete path. */ |
7b0d235c AJ |
348 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
349 | full_soname = alloca (strlen (path) + strlen (libname) + 2); | |
350 | sprintf (full_libname, "%s/%s", path, libname); | |
351 | sprintf (full_soname, "%s/%s", path, soname); | |
591e1ffb UD |
352 | |
353 | /* Does soname already exist and point to the right library? */ | |
354 | if (stat (full_soname, &stat_so) == 0) | |
355 | { | |
356 | if (stat (full_libname, &stat_lib)) | |
357 | { | |
358 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
359 | return; | |
360 | } | |
361 | if (stat_lib.st_dev == stat_so.st_dev | |
362 | && stat_lib.st_ino == stat_so.st_ino) | |
363 | /* Link is already correct. */ | |
364 | do_link = 0; | |
365 | else if (lstat (full_soname, &lstat_so) == 0 | |
366 | && !S_ISLNK (lstat_so.st_mode)) | |
367 | { | |
368 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
369 | do_link = 0; | |
370 | do_remove = 0; | |
371 | } | |
372 | } | |
373 | else if (lstat (full_soname, &lstat_so) != 0 | |
374 | || !S_ISLNK (lstat_so.st_mode)) | |
375 | /* Unless it is a stale symlink, there is no need to remove. */ | |
376 | do_remove = 0; | |
377 | ||
378 | if (opt_verbose) | |
379 | printf ("\t%s -> %s", soname, libname); | |
380 | ||
381 | if (do_link && opt_link) | |
382 | { | |
383 | /* Remove old link. */ | |
384 | if (do_remove) | |
385 | if (unlink (full_soname)) | |
386 | { | |
387 | error (0, 0, _("Can't unlink %s"), full_soname); | |
388 | do_link = 0; | |
389 | } | |
390 | /* Create symbolic link. */ | |
391 | if (do_link && symlink (libname, full_soname)) | |
392 | { | |
393 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
394 | do_link = 0; | |
395 | } | |
396 | if (opt_verbose) | |
397 | { | |
398 | if (do_link) | |
399 | fputs (_(" (changed)\n"), stdout); | |
400 | else | |
401 | fputs (_(" (SKIPPED)\n"), stdout); | |
402 | } | |
403 | } | |
404 | else if (opt_verbose) | |
405 | fputs ("\n", stdout); | |
406 | } | |
407 | ||
b85697f6 UD |
408 | /* Manually link the given library. */ |
409 | static void | |
410 | manual_link (char *library) | |
411 | { | |
412 | char *path; | |
413 | char *libname; | |
414 | char *soname; | |
415 | struct stat stat_buf; | |
416 | int flag; | |
417 | ||
418 | /* Prepare arguments for create_links call. Split library name in | |
419 | directory and filename first. Since path is allocated, we've got | |
420 | to be careful to free at the end. */ | |
421 | path = xstrdup (library); | |
422 | libname = strrchr (path, '/'); | |
423 | ||
424 | if (libname) | |
425 | { | |
426 | /* Successfully split names. Check if path is just "/" to avoid | |
427 | an empty path. */ | |
428 | if (libname == path) | |
429 | { | |
430 | libname = library + 1; | |
431 | path = xrealloc (path, 2); | |
432 | strcpy (path, "/"); | |
433 | } | |
434 | else | |
435 | { | |
436 | *libname = '\0'; | |
437 | ++libname; | |
438 | } | |
439 | } | |
440 | else | |
441 | { | |
442 | /* There's no path, construct one. */ | |
443 | libname = library; | |
444 | path = xrealloc (path, 2); | |
445 | strcpy (path, "."); | |
446 | } | |
447 | ||
448 | /* Do some sanity checks first. */ | |
449 | if (lstat (library, &stat_buf)) | |
450 | { | |
451 | error (0, errno, _("Can't lstat %s"), library); | |
452 | free (path); | |
453 | return; | |
454 | } | |
455 | /* We don't want links here! */ | |
456 | else if (!S_ISREG (stat_buf.st_mode)) | |
457 | { | |
458 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
459 | library); | |
460 | free (path); | |
461 | return; | |
462 | } | |
463 | libname = basename (library); | |
464 | if (process_file (library, libname, &flag, &soname, 0)) | |
465 | { | |
466 | error (0, 0, _("No link created since soname could not be found for %s"), | |
467 | library); | |
468 | free (path); | |
469 | return; | |
470 | } | |
471 | create_links (path, libname, soname); | |
472 | free (soname); | |
473 | free (path); | |
474 | } | |
475 | ||
476 | ||
591e1ffb UD |
477 | /* Read a whole directory and search for libraries. |
478 | The purpose is two-fold: | |
479 | - search for libraries which will be added to the cache | |
480 | - create symbolic links to the soname for each library | |
481 | ||
482 | This has to be done separatly for each directory. | |
45eca4d1 | 483 | |
591e1ffb UD |
484 | To keep track of which libraries to add to the cache and which |
485 | links to create, we save a list of all libraries. | |
486 | ||
487 | The algorithm is basically: | |
488 | for all libraries in the directory do | |
489 | get soname of library | |
490 | if soname is already in list | |
491 | if new library is newer, replace entry | |
492 | otherwise ignore this library | |
493 | otherwise add library to list | |
45eca4d1 | 494 | |
591e1ffb UD |
495 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
496 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
497 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
498 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
499 | libxy.so.1.1. */ | |
500 | ||
501 | /* Information for one library. */ | |
45eca4d1 | 502 | struct dlib_entry |
591e1ffb UD |
503 | { |
504 | char *name; | |
505 | char *soname; | |
506 | int flag; | |
507 | int is_link; | |
508 | struct dlib_entry *next; | |
509 | }; | |
510 | ||
511 | ||
512 | static void | |
513 | search_dir (const struct dir_entry *entry) | |
514 | { | |
515 | DIR *dir; | |
516 | struct dirent *direntry; | |
7b0d235c AJ |
517 | char *file_name; |
518 | int file_name_len, len; | |
591e1ffb UD |
519 | char *soname; |
520 | struct dlib_entry *dlibs; | |
521 | struct dlib_entry *dlib_ptr; | |
591e1ffb UD |
522 | struct stat stat_buf; |
523 | int is_link; | |
45eca4d1 UD |
524 | unsigned long int hwcap = path_hwcap (entry->path); |
525 | ||
7b0d235c AJ |
526 | file_name_len = PATH_MAX; |
527 | file_name = alloca (file_name_len); | |
528 | ||
591e1ffb UD |
529 | dlibs = NULL; |
530 | ||
531 | if (opt_verbose) | |
45eca4d1 UD |
532 | { |
533 | if (hwcap != 0) | |
534 | printf ("%s: (hwcap: 0x%lx)\n", entry->path, hwcap); | |
535 | else | |
536 | printf ("%s:\n", entry->path); | |
537 | } | |
538 | ||
591e1ffb UD |
539 | dir = opendir (entry->path); |
540 | if (dir == NULL) | |
541 | { | |
542 | if (opt_verbose) | |
543 | error (0, errno, _("Can't open directory %s"), entry->path); | |
544 | return; | |
545 | } | |
45eca4d1 | 546 | |
591e1ffb UD |
547 | |
548 | while ((direntry = readdir (dir)) != NULL) | |
549 | { | |
550 | int flag; | |
551 | #ifdef _DIRENT_HAVE_D_TYPE | |
552 | /* We only look at links and regular files. */ | |
553 | if (direntry->d_type != DT_UNKNOWN | |
554 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
555 | && direntry->d_type != DT_REG |
556 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
557 | continue; |
558 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
559 | /* Does this file look like a shared library or is it a hwcap |
560 | subdirectory? The dynamic linker is also considered as | |
561 | shared library. */ | |
562 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
563 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
564 | || strstr (direntry->d_name, ".so") == NULL) | |
565 | && !is_hwcap (direntry->d_name)) | |
591e1ffb | 566 | continue; |
7b0d235c AJ |
567 | len = strlen (entry->path) + strlen (direntry->d_name); |
568 | if (len > file_name_len) | |
591e1ffb | 569 | { |
7b0d235c AJ |
570 | file_name_len = len + 1; |
571 | file_name = alloca (file_name_len); | |
591e1ffb | 572 | } |
7b0d235c | 573 | sprintf (file_name , "%s/%s", entry->path, direntry->d_name); |
7c3002f0 UD |
574 | #ifdef _DIRENT_HAVE_D_TYPE |
575 | if (direntry->d_type != DT_UNKNOWN) | |
576 | stat_buf.st_mode = DTTOIF (direntry->d_type); | |
577 | else | |
578 | #endif | |
7b0d235c | 579 | if (lstat (file_name, &stat_buf)) |
7c3002f0 | 580 | { |
7b0d235c | 581 | error (0, errno, _("Can't lstat %s"), file_name); |
7c3002f0 UD |
582 | continue; |
583 | } | |
584 | ||
585 | if (S_ISDIR (stat_buf.st_mode) && is_hwcap (direntry->d_name)) | |
45eca4d1 | 586 | { |
a8fd59b0 AJ |
587 | /* Handle subdirectory later. */ |
588 | struct dir_entry *new_entry; | |
589 | ||
590 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 591 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
592 | new_entry->flag = entry->flag; |
593 | new_entry->next = NULL; | |
594 | add_single_dir (new_entry, 0); | |
45eca4d1 UD |
595 | continue; |
596 | } | |
591e1ffb UD |
597 | else if (!S_ISREG (stat_buf.st_mode) && !S_ISLNK (stat_buf.st_mode)) |
598 | continue; | |
599 | ||
600 | is_link = S_ISLNK (stat_buf.st_mode); | |
601 | ||
7b0d235c | 602 | if (process_file (file_name, direntry->d_name, &flag, &soname, is_link)) |
591e1ffb UD |
603 | continue; |
604 | ||
605 | /* Links will just point to itself. */ | |
606 | if (is_link) | |
607 | { | |
608 | free (soname); | |
609 | soname = xstrdup (direntry->d_name); | |
610 | } | |
45eca4d1 | 611 | |
591e1ffb UD |
612 | if (flag == FLAG_ELF |
613 | && (entry->flag == FLAG_ELF_LIBC5 | |
614 | || entry->flag == FLAG_ELF_LIBC6)) | |
615 | flag = entry->flag; | |
616 | /* Some sanity checks to print warnings. */ | |
617 | if (opt_verbose) | |
618 | { | |
619 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
620 | && entry->flag != FLAG_ANY) | |
7b0d235c | 621 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
622 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
623 | && entry->flag != FLAG_ANY) | |
7b0d235c | 624 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
625 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
626 | && entry->flag != FLAG_ANY) | |
7b0d235c | 627 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 628 | } |
45eca4d1 | 629 | |
591e1ffb UD |
630 | /* Add library to list. */ |
631 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
632 | { | |
633 | /* Is soname already in list? */ | |
634 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
635 | { | |
636 | /* Prefer a file to a link, otherwise check which one | |
637 | is newer. */ | |
638 | if ((!is_link && dlib_ptr->is_link) | |
639 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 640 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
641 | { |
642 | /* It's newer - add it. */ | |
643 | /* Flag should be the same - sanity check. */ | |
644 | if (dlib_ptr->flag != flag) | |
645 | { | |
646 | if (dlib_ptr->flag == FLAG_ELF | |
647 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
648 | dlib_ptr->flag = flag; | |
649 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
650 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
651 | && flag == FLAG_ELF) | |
652 | dlib_ptr->flag = flag; | |
653 | else | |
654 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
655 | dlib_ptr->name, direntry->d_name, entry->path); | |
656 | } | |
657 | free (dlib_ptr->name); | |
658 | dlib_ptr->name = xstrdup (direntry->d_name); | |
659 | dlib_ptr->is_link = is_link; | |
660 | } | |
661 | /* Don't add this library, abort loop. */ | |
662 | /* Also free soname, since it's dynamically allocated. */ | |
663 | free (soname); | |
664 | break; | |
665 | } | |
666 | } | |
667 | /* Add the library if it's not already in. */ | |
668 | if (dlib_ptr == NULL) | |
669 | { | |
670 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
671 | dlib_ptr->name = xstrdup (direntry->d_name); | |
672 | dlib_ptr->flag = flag; | |
673 | dlib_ptr->soname = soname; | |
674 | dlib_ptr->is_link = is_link; | |
675 | /* Add at head of list. */ | |
676 | dlib_ptr->next = dlibs; | |
677 | dlibs = dlib_ptr; | |
678 | } | |
679 | } | |
680 | ||
681 | closedir (dir); | |
682 | ||
683 | /* Now dlibs contains a list of all libs - add those to the cache | |
684 | and created all symbolic links. */ | |
685 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
686 | { | |
687 | /* Don't create links to links. */ | |
688 | if (dlib_ptr->is_link == 0) | |
689 | create_links (entry->path, dlib_ptr->name, dlib_ptr->soname); | |
690 | if (opt_build_cache) | |
45eca4d1 | 691 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, hwcap); |
591e1ffb UD |
692 | } |
693 | ||
694 | /* Free all resources. */ | |
45eca4d1 | 695 | while (dlibs) |
591e1ffb UD |
696 | { |
697 | dlib_ptr = dlibs; | |
698 | free (dlib_ptr->soname); | |
699 | free (dlib_ptr->name); | |
700 | dlibs = dlibs->next; | |
701 | free (dlib_ptr); | |
702 | } | |
703 | } | |
704 | ||
705 | /* Search through all libraries. */ | |
706 | static void | |
707 | search_dirs (void) | |
708 | { | |
709 | struct dir_entry *entry; | |
710 | ||
711 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
712 | search_dir (entry); | |
713 | ||
714 | /* Free all allocated memory. */ | |
715 | while (dir_entries) | |
716 | { | |
717 | entry = dir_entries; | |
718 | dir_entries = dir_entries->next; | |
719 | free (entry->path); | |
720 | free (entry); | |
721 | } | |
722 | } | |
723 | ||
724 | ||
725 | /* Parse configuration file. */ | |
726 | static void | |
727 | parse_conf (const char *filename) | |
728 | { | |
729 | FILE *file; | |
730 | char *line = NULL; | |
731 | size_t len = 0; | |
45eca4d1 | 732 | |
591e1ffb UD |
733 | file = fopen (filename, "r"); |
734 | ||
735 | if (file == NULL) | |
736 | { | |
737 | error (0, errno, _("Can't open configuration file %s"), filename); | |
738 | return; | |
739 | } | |
740 | ||
741 | do | |
742 | { | |
743 | ssize_t n = getline (&line, &len, file); | |
744 | if (n < 0) | |
745 | break; | |
746 | ||
747 | if (line[n - 1] == '\n') | |
748 | line[n - 1] = '\0'; | |
749 | ||
750 | /* Because the file format does not know any form of quoting we | |
751 | can search forward for the next '#' character and if found | |
752 | make it terminating the line. */ | |
753 | *strchrnul (line, '#') = '\0'; | |
754 | ||
755 | /* If the line is blank it is ignored. */ | |
756 | if (line[0] == '\0') | |
757 | continue; | |
758 | ||
759 | add_dir (line); | |
760 | } while (!feof (file)); | |
761 | ||
762 | /* Free buffer and close file. */ | |
763 | free (line); | |
764 | fclose (file); | |
765 | } | |
766 | ||
767 | ||
768 | int | |
769 | main (int argc, char **argv) | |
770 | { | |
771 | int remaining; | |
45eca4d1 | 772 | |
591e1ffb UD |
773 | /* Parse and process arguments. */ |
774 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
775 | ||
b85697f6 UD |
776 | /* Remaining arguments are additional libraries if opt_manual_link |
777 | is not set. */ | |
778 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
779 | { |
780 | int i; | |
781 | for (i = remaining; i < argc; ++i) | |
782 | add_dir (argv [i]); | |
783 | } | |
784 | ||
785 | if (cache_file == NULL) | |
786 | cache_file = LD_SO_CACHE; | |
787 | ||
788 | if (config_file == NULL) | |
789 | config_file = LD_SO_CONF; | |
45eca4d1 | 790 | |
591e1ffb UD |
791 | /* Chroot first. */ |
792 | if (opt_chroot) | |
793 | { | |
794 | if (chroot (opt_chroot)) | |
795 | /* Report failure and exit program. */ | |
796 | error (EXIT_FAILURE, errno, _("Can't chroot to %s"), opt_chroot); | |
797 | /* chroot doesn't change the working directory, let's play safe. */ | |
798 | if (chdir ("/")) | |
799 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
800 | } | |
801 | ||
802 | if (opt_print_cache) | |
803 | { | |
804 | print_cache (cache_file); | |
805 | exit (0); | |
806 | } | |
807 | ||
b85697f6 UD |
808 | if (opt_manual_link) |
809 | { | |
810 | /* Link all given libraries manually. */ | |
811 | int i; | |
812 | ||
813 | for (i = remaining; i < argc; ++i) | |
814 | manual_link (argv [i]); | |
815 | ||
816 | exit (0); | |
817 | } | |
45eca4d1 UD |
818 | |
819 | ||
591e1ffb UD |
820 | if (opt_build_cache) |
821 | init_cache (); | |
822 | ||
823 | if (!opt_only_cline) | |
824 | { | |
825 | /* Always add the standard search paths. */ | |
8ca91b36 UD |
826 | add_dir (SLIBDIR); |
827 | if (strcmp (SLIBDIR, LIBDIR)) | |
828 | add_dir (LIBDIR); | |
591e1ffb UD |
829 | |
830 | parse_conf (config_file); | |
831 | } | |
45eca4d1 | 832 | |
591e1ffb UD |
833 | search_dirs (); |
834 | ||
835 | if (opt_build_cache) | |
836 | save_cache (cache_file); | |
837 | ||
838 | return 0; | |
839 | } |