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Commit | Line | Data |
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06a60d9c | 1 | /* Copyright (C) 1999, 2000, 2001 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> | |
5a35dfca | 26 | #include <inttypes.h> |
591e1ffb UD |
27 | #include <libintl.h> |
28 | #include <stdio.h> | |
29 | #include <stdlib.h> | |
30 | #include <string.h> | |
31 | #include <unistd.h> | |
32 | #include <sys/fcntl.h> | |
33 | #include <sys/mman.h> | |
34 | #include <sys/stat.h> | |
35 | #include <sys/types.h> | |
36 | ||
37 | #include "ldconfig.h" | |
45eca4d1 | 38 | #include "dl-cache.h" |
591e1ffb | 39 | |
45eca4d1 | 40 | #include "dl-procinfo.h" |
591e1ffb UD |
41 | |
42 | #ifndef LD_SO_CONF | |
8ca91b36 | 43 | # define LD_SO_CONF SYSCONFDIR "/ld.so.conf" |
591e1ffb UD |
44 | #endif |
45 | ||
46 | /* Get libc version number. */ | |
47 | #include <version.h> | |
48 | ||
49 | #define PACKAGE _libc_intl_domainname | |
50 | ||
591e1ffb UD |
51 | static const struct |
52 | { | |
53 | const char *name; | |
54 | int flag; | |
a986484f | 55 | } lib_types[] = |
591e1ffb UD |
56 | { |
57 | {"libc4", FLAG_LIBC4}, | |
58 | {"libc5", FLAG_ELF_LIBC5}, | |
59 | {"libc6", FLAG_ELF_LIBC6}, | |
60 | {"glibc2", FLAG_ELF_LIBC6} | |
45eca4d1 | 61 | }; |
591e1ffb UD |
62 | |
63 | ||
64 | /* List of directories to handle. */ | |
65 | struct dir_entry | |
66 | { | |
67 | char *path; | |
68 | int flag; | |
69 | struct dir_entry *next; | |
70 | }; | |
71 | ||
72 | /* The list is unsorted, contains no duplicates. Entries are added at | |
73 | the end. */ | |
74 | static struct dir_entry *dir_entries; | |
75 | ||
76 | /* Flags for different options. */ | |
77 | /* Print Cache. */ | |
78 | static int opt_print_cache = 0; | |
79 | ||
80 | /* Be verbose. */ | |
81 | int opt_verbose = 0; | |
82 | ||
45eca4d1 UD |
83 | /* Format to support. */ |
84 | /* 0: only libc5/glibc2; 1: both; 2: only glibc 2.2. */ | |
85 | int opt_format = 1; | |
86 | ||
591e1ffb UD |
87 | /* Build cache. */ |
88 | static int opt_build_cache = 1; | |
89 | ||
90 | /* Generate links. */ | |
91 | static int opt_link = 1; | |
92 | ||
93 | /* Only process directories specified on the command line. */ | |
94 | static int opt_only_cline = 0; | |
95 | ||
96 | /* Path to root for chroot. */ | |
97 | static char *opt_chroot; | |
98 | ||
b85697f6 UD |
99 | /* Manually link given shared libraries. */ |
100 | static int opt_manual_link = 0; | |
101 | ||
591e1ffb | 102 | /* Cache file to use. */ |
b4a555d6 | 103 | static char *cache_file; |
591e1ffb UD |
104 | |
105 | /* Configuration file. */ | |
106 | static const char *config_file; | |
107 | ||
108 | /* Name and version of program. */ | |
109 | static void print_version (FILE *stream, struct argp_state *state); | |
110 | void (*argp_program_version_hook) (FILE *, struct argp_state *) | |
111 | = print_version; | |
112 | ||
113 | /* Definitions of arguments for argp functions. */ | |
114 | static const struct argp_option options[] = | |
115 | { | |
116 | { "print-cache", 'p', NULL, 0, N_("Print cache"), 0}, | |
117 | { "verbose", 'v', NULL, 0, N_("Generate verbose messages"), 0}, | |
118 | { NULL, 'N', NULL, 0, N_("Don't build cache"), 0}, | |
119 | { NULL, 'X', NULL, 0, N_("Don't generate links"), 0}, | |
120 | { NULL, 'r', "ROOT", 0, N_("Change to and use ROOT as root directory"), 0}, | |
121 | { NULL, 'C', "CACHE", 0, N_("Use CACHE as cache file"), 0}, | |
122 | { NULL, 'f', "CONF", 0, N_("Use CONF as configuration file"), 0}, | |
123 | { NULL, 'n', NULL, 0, N_("Only process directories specified on the command line. Don't build cache."), 0}, | |
b85697f6 | 124 | { NULL, 'l', NULL, 0, N_("Manually link individual libraries."), 0}, |
45eca4d1 | 125 | { "format", 'c', "FORMAT", 0, N_("Format to use: new, old or compat (default)"), 0}, |
591e1ffb UD |
126 | { NULL, 0, NULL, 0, NULL, 0 } |
127 | }; | |
128 | ||
129 | /* Short description of program. */ | |
130 | static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings."); | |
131 | ||
132 | /* Prototype for option handler. */ | |
133 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
134 | ||
135 | /* Data structure to communicate with argp functions. */ | |
136 | static struct argp argp = | |
137 | { | |
138 | options, parse_opt, NULL, doc, NULL, NULL, NULL | |
139 | }; | |
140 | ||
a6c1c03a AJ |
141 | /* Check if string corresponds to an important hardware capability or |
142 | a platform. */ | |
45eca4d1 | 143 | static int |
a6c1c03a | 144 | is_hwcap_platform (const char *name) |
45eca4d1 UD |
145 | { |
146 | int hwcap_idx = _dl_string_hwcap (name); | |
8ca91b36 | 147 | |
45eca4d1 UD |
148 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & HWCAP_IMPORTANT)) |
149 | return 1; | |
a6c1c03a AJ |
150 | |
151 | hwcap_idx = _dl_string_platform (name); | |
152 | if (hwcap_idx != -1) | |
153 | return 1; | |
154 | ||
45eca4d1 UD |
155 | return 0; |
156 | } | |
157 | ||
a6c1c03a AJ |
158 | /* Get hwcap (including platform) encoding of path. */ |
159 | static uint64_t | |
45eca4d1 UD |
160 | path_hwcap (const char *path) |
161 | { | |
162 | char *str = xstrdup (path); | |
163 | char *ptr; | |
a6c1c03a AJ |
164 | uint64_t hwcap = 0; |
165 | uint64_t h; | |
45eca4d1 UD |
166 | |
167 | size_t len; | |
168 | ||
169 | len = strlen (str); | |
170 | if (str[len] == '/') | |
171 | str[len] = '\0'; | |
172 | ||
173 | /* Search pathname from the end and check for hwcap strings. */ | |
174 | for (;;) | |
175 | { | |
176 | ptr = strrchr (str, '/'); | |
177 | ||
178 | if (ptr == NULL) | |
179 | break; | |
180 | ||
a6c1c03a | 181 | h = _dl_string_hwcap (ptr + 1); |
45eca4d1 | 182 | |
59553897 UD |
183 | if (h == (uint64_t) -1) |
184 | { | |
185 | h = _dl_string_platform (ptr + 1); | |
186 | if (h == (uint64_t) -1) | |
187 | break; | |
188 | } | |
a6c1c03a | 189 | hwcap += 1ULL << 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\ | |
06a60d9c | 257 | "), "2001"); |
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; | |
a986484f | 311 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i) |
591e1ffb UD |
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 | { | |
a986484f | 329 | entry->path[i] = '\0'; |
591e1ffb UD |
330 | --i; |
331 | } | |
45eca4d1 | 332 | |
a8fd59b0 | 333 | add_single_dir (entry, 1); |
591e1ffb UD |
334 | } |
335 | ||
336 | ||
b4a555d6 UD |
337 | static int |
338 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
339 | { | |
340 | int ret; | |
341 | char *canon_path; | |
342 | ||
343 | if (!opt_chroot) | |
344 | return stat64 (real_path, st); | |
345 | ||
346 | ret = lstat64 (real_path, st); | |
347 | if (ret || !S_ISLNK (st->st_mode)) | |
348 | return ret; | |
349 | ||
350 | canon_path = chroot_canon (opt_chroot, path); | |
351 | if (canon_path == NULL) | |
352 | return -1; | |
353 | ||
354 | ret = stat64 (canon_path, st); | |
355 | free (canon_path); | |
356 | return ret; | |
357 | } | |
358 | ||
591e1ffb UD |
359 | /* Create a symbolic link from soname to libname in directory path. */ |
360 | static void | |
b4a555d6 UD |
361 | create_links (const char *real_path, const char *path, const char *libname, |
362 | const char *soname) | |
591e1ffb | 363 | { |
7b0d235c | 364 | char *full_libname, *full_soname; |
b4a555d6 UD |
365 | char *real_full_libname, *real_full_soname; |
366 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
367 | int do_link = 1; |
368 | int do_remove = 1; | |
369 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 370 | |
591e1ffb | 371 | /* Get complete path. */ |
7b0d235c | 372 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 373 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
374 | sprintf (full_libname, "%s/%s", path, libname); |
375 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
376 | if (opt_chroot) |
377 | { | |
378 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 379 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
380 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
381 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
382 | } | |
383 | else | |
384 | { | |
385 | real_full_libname = full_libname; | |
386 | real_full_soname = full_soname; | |
387 | } | |
591e1ffb UD |
388 | |
389 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 390 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 391 | { |
b4a555d6 | 392 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
393 | { |
394 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
395 | return; | |
396 | } | |
397 | if (stat_lib.st_dev == stat_so.st_dev | |
398 | && stat_lib.st_ino == stat_so.st_ino) | |
399 | /* Link is already correct. */ | |
400 | do_link = 0; | |
b4a555d6 | 401 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
402 | && !S_ISLNK (lstat_so.st_mode)) |
403 | { | |
404 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
405 | do_link = 0; | |
406 | do_remove = 0; | |
407 | } | |
408 | } | |
b4a555d6 | 409 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
410 | || !S_ISLNK (lstat_so.st_mode)) |
411 | /* Unless it is a stale symlink, there is no need to remove. */ | |
412 | do_remove = 0; | |
413 | ||
414 | if (opt_verbose) | |
415 | printf ("\t%s -> %s", soname, libname); | |
416 | ||
417 | if (do_link && opt_link) | |
418 | { | |
419 | /* Remove old link. */ | |
420 | if (do_remove) | |
b4a555d6 | 421 | if (unlink (real_full_soname)) |
591e1ffb UD |
422 | { |
423 | error (0, 0, _("Can't unlink %s"), full_soname); | |
424 | do_link = 0; | |
425 | } | |
426 | /* Create symbolic link. */ | |
b4a555d6 | 427 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
428 | { |
429 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
430 | do_link = 0; | |
431 | } | |
432 | if (opt_verbose) | |
433 | { | |
434 | if (do_link) | |
435 | fputs (_(" (changed)\n"), stdout); | |
436 | else | |
437 | fputs (_(" (SKIPPED)\n"), stdout); | |
438 | } | |
439 | } | |
440 | else if (opt_verbose) | |
441 | fputs ("\n", stdout); | |
442 | } | |
443 | ||
b85697f6 UD |
444 | /* Manually link the given library. */ |
445 | static void | |
446 | manual_link (char *library) | |
447 | { | |
448 | char *path; | |
b4a555d6 UD |
449 | char *real_path; |
450 | char *real_library; | |
b85697f6 UD |
451 | char *libname; |
452 | char *soname; | |
b4a555d6 | 453 | struct stat64 stat_buf; |
b85697f6 | 454 | int flag; |
a986484f | 455 | unsigned int osversion; |
b85697f6 UD |
456 | |
457 | /* Prepare arguments for create_links call. Split library name in | |
458 | directory and filename first. Since path is allocated, we've got | |
459 | to be careful to free at the end. */ | |
460 | path = xstrdup (library); | |
461 | libname = strrchr (path, '/'); | |
462 | ||
463 | if (libname) | |
464 | { | |
465 | /* Successfully split names. Check if path is just "/" to avoid | |
466 | an empty path. */ | |
467 | if (libname == path) | |
468 | { | |
469 | libname = library + 1; | |
470 | path = xrealloc (path, 2); | |
471 | strcpy (path, "/"); | |
472 | } | |
473 | else | |
474 | { | |
475 | *libname = '\0'; | |
476 | ++libname; | |
477 | } | |
478 | } | |
479 | else | |
480 | { | |
481 | /* There's no path, construct one. */ | |
482 | libname = library; | |
483 | path = xrealloc (path, 2); | |
484 | strcpy (path, "."); | |
485 | } | |
486 | ||
b4a555d6 UD |
487 | if (opt_chroot) |
488 | { | |
489 | real_path = chroot_canon (opt_chroot, path); | |
490 | if (real_path == NULL) | |
491 | { | |
492 | error (0, errno, _("Can't find %s"), path); | |
493 | free (path); | |
494 | return; | |
495 | } | |
496 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
497 | sprintf (real_library, "%s/%s", real_path, libname); | |
498 | } | |
499 | else | |
500 | { | |
501 | real_path = path; | |
502 | real_library = library; | |
503 | } | |
504 | ||
b85697f6 | 505 | /* Do some sanity checks first. */ |
b4a555d6 | 506 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 UD |
507 | { |
508 | error (0, errno, _("Can't lstat %s"), library); | |
509 | free (path); | |
510 | return; | |
511 | } | |
512 | /* We don't want links here! */ | |
513 | else if (!S_ISREG (stat_buf.st_mode)) | |
514 | { | |
515 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
516 | library); | |
517 | free (path); | |
518 | return; | |
519 | } | |
a986484f UD |
520 | if (process_file (real_library, library, libname, &flag, &osversion, |
521 | &soname, 0)) | |
b85697f6 UD |
522 | { |
523 | error (0, 0, _("No link created since soname could not be found for %s"), | |
524 | library); | |
525 | free (path); | |
526 | return; | |
527 | } | |
b4a555d6 | 528 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
529 | free (soname); |
530 | free (path); | |
531 | } | |
532 | ||
533 | ||
591e1ffb UD |
534 | /* Read a whole directory and search for libraries. |
535 | The purpose is two-fold: | |
536 | - search for libraries which will be added to the cache | |
537 | - create symbolic links to the soname for each library | |
538 | ||
539 | This has to be done separatly for each directory. | |
45eca4d1 | 540 | |
591e1ffb UD |
541 | To keep track of which libraries to add to the cache and which |
542 | links to create, we save a list of all libraries. | |
543 | ||
544 | The algorithm is basically: | |
545 | for all libraries in the directory do | |
546 | get soname of library | |
547 | if soname is already in list | |
548 | if new library is newer, replace entry | |
549 | otherwise ignore this library | |
550 | otherwise add library to list | |
45eca4d1 | 551 | |
591e1ffb UD |
552 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
553 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
554 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
555 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
556 | libxy.so.1.1. */ | |
557 | ||
558 | /* Information for one library. */ | |
45eca4d1 | 559 | struct dlib_entry |
591e1ffb UD |
560 | { |
561 | char *name; | |
562 | char *soname; | |
563 | int flag; | |
564 | int is_link; | |
a986484f | 565 | unsigned int osversion; |
591e1ffb UD |
566 | struct dlib_entry *next; |
567 | }; | |
568 | ||
569 | ||
570 | static void | |
571 | search_dir (const struct dir_entry *entry) | |
572 | { | |
573 | DIR *dir; | |
574 | struct dirent *direntry; | |
b4a555d6 UD |
575 | char *file_name, *dir_name, *real_file_name, *real_name; |
576 | int file_name_len, real_file_name_len, len; | |
591e1ffb UD |
577 | char *soname; |
578 | struct dlib_entry *dlibs; | |
579 | struct dlib_entry *dlib_ptr; | |
b4a555d6 | 580 | struct stat64 stat_buf; |
591e1ffb | 581 | int is_link; |
a6c1c03a | 582 | uint64_t hwcap = path_hwcap (entry->path); |
a986484f | 583 | unsigned int osversion; |
45eca4d1 | 584 | |
7b0d235c AJ |
585 | file_name_len = PATH_MAX; |
586 | file_name = alloca (file_name_len); | |
f0189a54 | 587 | |
591e1ffb UD |
588 | dlibs = NULL; |
589 | ||
590 | if (opt_verbose) | |
45eca4d1 UD |
591 | { |
592 | if (hwcap != 0) | |
5a35dfca | 593 | printf ("%s: (hwcap: 0x%" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
594 | else |
595 | printf ("%s:\n", entry->path); | |
596 | } | |
597 | ||
b4a555d6 UD |
598 | if (opt_chroot) |
599 | { | |
600 | dir_name = chroot_canon (opt_chroot, entry->path); | |
601 | real_file_name_len = PATH_MAX; | |
602 | real_file_name = alloca (real_file_name_len); | |
603 | } | |
604 | else | |
605 | { | |
606 | dir_name = entry->path; | |
607 | real_file_name_len = 0; | |
608 | real_file_name = file_name; | |
609 | } | |
610 | ||
611 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) | |
591e1ffb UD |
612 | { |
613 | if (opt_verbose) | |
614 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
615 | if (opt_chroot && dir_name) |
616 | free (dir_name); | |
591e1ffb UD |
617 | return; |
618 | } | |
45eca4d1 | 619 | |
591e1ffb UD |
620 | while ((direntry = readdir (dir)) != NULL) |
621 | { | |
622 | int flag; | |
623 | #ifdef _DIRENT_HAVE_D_TYPE | |
624 | /* We only look at links and regular files. */ | |
625 | if (direntry->d_type != DT_UNKNOWN | |
626 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
627 | && direntry->d_type != DT_REG |
628 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
629 | continue; |
630 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
631 | /* Does this file look like a shared library or is it a hwcap |
632 | subdirectory? The dynamic linker is also considered as | |
633 | shared library. */ | |
634 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
635 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
636 | || strstr (direntry->d_name, ".so") == NULL) | |
a6c1c03a | 637 | && !is_hwcap_platform (direntry->d_name)) |
591e1ffb | 638 | continue; |
7b0d235c AJ |
639 | len = strlen (entry->path) + strlen (direntry->d_name); |
640 | if (len > file_name_len) | |
591e1ffb | 641 | { |
7b0d235c AJ |
642 | file_name_len = len + 1; |
643 | file_name = alloca (file_name_len); | |
b4a555d6 UD |
644 | if (!opt_chroot) |
645 | real_file_name = file_name; | |
646 | } | |
647 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
648 | if (opt_chroot) | |
649 | { | |
650 | len = strlen (dir_name) + strlen (direntry->d_name); | |
651 | if (len > real_file_name_len) | |
652 | { | |
653 | real_file_name_len = len + 1; | |
654 | real_file_name = alloca (real_file_name_len); | |
655 | } | |
656 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 657 | } |
7c3002f0 UD |
658 | #ifdef _DIRENT_HAVE_D_TYPE |
659 | if (direntry->d_type != DT_UNKNOWN) | |
660 | stat_buf.st_mode = DTTOIF (direntry->d_type); | |
661 | else | |
662 | #endif | |
b4a555d6 | 663 | if (lstat64 (real_file_name, &stat_buf)) |
7c3002f0 | 664 | { |
7b0d235c | 665 | error (0, errno, _("Can't lstat %s"), file_name); |
7c3002f0 UD |
666 | continue; |
667 | } | |
668 | ||
a6c1c03a | 669 | if (S_ISDIR (stat_buf.st_mode) && is_hwcap_platform (direntry->d_name)) |
45eca4d1 | 670 | { |
a8fd59b0 AJ |
671 | /* Handle subdirectory later. */ |
672 | struct dir_entry *new_entry; | |
673 | ||
674 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 675 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
676 | new_entry->flag = entry->flag; |
677 | new_entry->next = NULL; | |
678 | add_single_dir (new_entry, 0); | |
45eca4d1 UD |
679 | continue; |
680 | } | |
591e1ffb UD |
681 | else if (!S_ISREG (stat_buf.st_mode) && !S_ISLNK (stat_buf.st_mode)) |
682 | continue; | |
683 | ||
684 | is_link = S_ISLNK (stat_buf.st_mode); | |
b4a555d6 UD |
685 | if (opt_chroot && is_link) |
686 | { | |
687 | real_name = chroot_canon (opt_chroot, file_name); | |
688 | if (real_name == NULL) | |
689 | { | |
690 | if (strstr (file_name, ".so") == NULL) | |
691 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
692 | continue; | |
693 | } | |
694 | } | |
695 | else | |
696 | real_name = real_file_name; | |
591e1ffb | 697 | |
b4a555d6 | 698 | if (process_file (real_name, file_name, direntry->d_name, &flag, |
a986484f | 699 | &osversion, &soname, is_link)) |
b4a555d6 UD |
700 | { |
701 | if (real_name != real_file_name) | |
702 | free (real_name); | |
703 | continue; | |
704 | } | |
705 | ||
706 | if (real_name != real_file_name) | |
707 | free (real_name); | |
591e1ffb UD |
708 | |
709 | /* Links will just point to itself. */ | |
710 | if (is_link) | |
711 | { | |
712 | free (soname); | |
713 | soname = xstrdup (direntry->d_name); | |
714 | } | |
45eca4d1 | 715 | |
591e1ffb UD |
716 | if (flag == FLAG_ELF |
717 | && (entry->flag == FLAG_ELF_LIBC5 | |
718 | || entry->flag == FLAG_ELF_LIBC6)) | |
719 | flag = entry->flag; | |
720 | /* Some sanity checks to print warnings. */ | |
721 | if (opt_verbose) | |
722 | { | |
723 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
724 | && entry->flag != FLAG_ANY) | |
7b0d235c | 725 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
726 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
727 | && entry->flag != FLAG_ANY) | |
7b0d235c | 728 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
729 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
730 | && entry->flag != FLAG_ANY) | |
7b0d235c | 731 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 732 | } |
45eca4d1 | 733 | |
591e1ffb UD |
734 | /* Add library to list. */ |
735 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
736 | { | |
737 | /* Is soname already in list? */ | |
738 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
739 | { | |
740 | /* Prefer a file to a link, otherwise check which one | |
741 | is newer. */ | |
742 | if ((!is_link && dlib_ptr->is_link) | |
743 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 744 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
745 | { |
746 | /* It's newer - add it. */ | |
747 | /* Flag should be the same - sanity check. */ | |
748 | if (dlib_ptr->flag != flag) | |
749 | { | |
750 | if (dlib_ptr->flag == FLAG_ELF | |
751 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
752 | dlib_ptr->flag = flag; | |
753 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
754 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
755 | && flag == FLAG_ELF) | |
756 | dlib_ptr->flag = flag; | |
757 | else | |
758 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
759 | dlib_ptr->name, direntry->d_name, entry->path); | |
760 | } | |
761 | free (dlib_ptr->name); | |
b15ff9d6 | 762 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
763 | dlib_ptr->name = xstrdup (direntry->d_name); |
764 | dlib_ptr->is_link = is_link; | |
765 | } | |
766 | /* Don't add this library, abort loop. */ | |
767 | /* Also free soname, since it's dynamically allocated. */ | |
768 | free (soname); | |
769 | break; | |
770 | } | |
771 | } | |
772 | /* Add the library if it's not already in. */ | |
773 | if (dlib_ptr == NULL) | |
774 | { | |
775 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
776 | dlib_ptr->name = xstrdup (direntry->d_name); | |
777 | dlib_ptr->flag = flag; | |
a986484f | 778 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
779 | dlib_ptr->soname = soname; |
780 | dlib_ptr->is_link = is_link; | |
781 | /* Add at head of list. */ | |
782 | dlib_ptr->next = dlibs; | |
783 | dlibs = dlib_ptr; | |
784 | } | |
785 | } | |
786 | ||
787 | closedir (dir); | |
788 | ||
789 | /* Now dlibs contains a list of all libs - add those to the cache | |
790 | and created all symbolic links. */ | |
791 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
792 | { | |
793 | /* Don't create links to links. */ | |
794 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
795 | create_links (dir_name, entry->path, dlib_ptr->name, |
796 | dlib_ptr->soname); | |
591e1ffb | 797 | if (opt_build_cache) |
a986484f UD |
798 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
799 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
800 | } |
801 | ||
802 | /* Free all resources. */ | |
45eca4d1 | 803 | while (dlibs) |
591e1ffb UD |
804 | { |
805 | dlib_ptr = dlibs; | |
806 | free (dlib_ptr->soname); | |
807 | free (dlib_ptr->name); | |
808 | dlibs = dlibs->next; | |
809 | free (dlib_ptr); | |
810 | } | |
b4a555d6 UD |
811 | |
812 | if (opt_chroot && dir_name) | |
813 | free (dir_name); | |
591e1ffb UD |
814 | } |
815 | ||
816 | /* Search through all libraries. */ | |
817 | static void | |
818 | search_dirs (void) | |
819 | { | |
820 | struct dir_entry *entry; | |
821 | ||
822 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
823 | search_dir (entry); | |
824 | ||
825 | /* Free all allocated memory. */ | |
826 | while (dir_entries) | |
827 | { | |
828 | entry = dir_entries; | |
829 | dir_entries = dir_entries->next; | |
830 | free (entry->path); | |
831 | free (entry); | |
832 | } | |
833 | } | |
834 | ||
835 | ||
836 | /* Parse configuration file. */ | |
837 | static void | |
838 | parse_conf (const char *filename) | |
839 | { | |
b4a555d6 | 840 | FILE *file = NULL; |
591e1ffb | 841 | char *line = NULL; |
b4a555d6 | 842 | const char *canon; |
591e1ffb | 843 | size_t len = 0; |
45eca4d1 | 844 | |
b4a555d6 UD |
845 | if (opt_chroot) |
846 | { | |
847 | canon = chroot_canon (opt_chroot, filename); | |
848 | if (canon) | |
849 | file = fopen (canon, "r"); | |
850 | else | |
851 | canon = filename; | |
852 | } | |
853 | else | |
854 | { | |
855 | canon = filename; | |
856 | file = fopen (filename, "r"); | |
857 | } | |
591e1ffb UD |
858 | |
859 | if (file == NULL) | |
860 | { | |
b4a555d6 UD |
861 | error (0, errno, _("Can't open configuration file %s"), canon); |
862 | if (canon != filename) | |
863 | free ((char *) canon); | |
591e1ffb UD |
864 | return; |
865 | } | |
866 | ||
b4a555d6 UD |
867 | if (canon != filename) |
868 | free ((char *) canon); | |
869 | ||
591e1ffb UD |
870 | do |
871 | { | |
872 | ssize_t n = getline (&line, &len, file); | |
873 | if (n < 0) | |
874 | break; | |
875 | ||
876 | if (line[n - 1] == '\n') | |
877 | line[n - 1] = '\0'; | |
878 | ||
879 | /* Because the file format does not know any form of quoting we | |
880 | can search forward for the next '#' character and if found | |
881 | make it terminating the line. */ | |
882 | *strchrnul (line, '#') = '\0'; | |
883 | ||
884 | /* If the line is blank it is ignored. */ | |
885 | if (line[0] == '\0') | |
886 | continue; | |
887 | ||
888 | add_dir (line); | |
889 | } while (!feof (file)); | |
890 | ||
891 | /* Free buffer and close file. */ | |
892 | free (line); | |
893 | fclose (file); | |
894 | } | |
895 | ||
896 | ||
897 | int | |
898 | main (int argc, char **argv) | |
899 | { | |
900 | int remaining; | |
45eca4d1 | 901 | |
591e1ffb UD |
902 | /* Parse and process arguments. */ |
903 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
904 | ||
b85697f6 UD |
905 | /* Remaining arguments are additional libraries if opt_manual_link |
906 | is not set. */ | |
907 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
908 | { |
909 | int i; | |
910 | for (i = remaining; i < argc; ++i) | |
a986484f | 911 | add_dir (argv[i]); |
591e1ffb UD |
912 | } |
913 | ||
591e1ffb UD |
914 | if (opt_chroot) |
915 | { | |
f0189a54 UD |
916 | /* Normalize the path a bit, we might need it for printing later. */ |
917 | char *endp = strchr (opt_chroot, '\0'); | |
b4a555d6 | 918 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
919 | --endp; |
920 | *endp = '\0'; | |
b4a555d6 UD |
921 | if (endp == opt_chroot) |
922 | opt_chroot = NULL; | |
f0189a54 | 923 | |
b4a555d6 UD |
924 | if (opt_chroot) |
925 | { | |
926 | /* It is faster to use chroot if we can. */ | |
927 | if (!chroot (opt_chroot)) | |
928 | { | |
929 | if (chdir ("/")) | |
930 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
931 | opt_chroot = NULL; | |
932 | } | |
933 | } | |
934 | } | |
935 | ||
936 | if (cache_file == NULL) | |
937 | { | |
938 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
939 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
940 | } |
941 | ||
b4a555d6 UD |
942 | if (config_file == NULL) |
943 | config_file = LD_SO_CONF; | |
944 | ||
591e1ffb UD |
945 | if (opt_print_cache) |
946 | { | |
b4a555d6 UD |
947 | if (opt_chroot) |
948 | { | |
949 | char *p = chroot_canon (opt_chroot, cache_file); | |
950 | if (p == NULL) | |
951 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
952 | cache_file); | |
953 | cache_file = p; | |
954 | } | |
591e1ffb | 955 | print_cache (cache_file); |
b4a555d6 UD |
956 | if (opt_chroot) |
957 | free (cache_file); | |
591e1ffb UD |
958 | exit (0); |
959 | } | |
960 | ||
b4a555d6 UD |
961 | if (opt_chroot) |
962 | { | |
963 | /* Canonicalize the directory name of cache_file, not cache_file, | |
964 | because we'll rename a temporary cache file to it. */ | |
965 | char *p = strrchr (cache_file, '/'); | |
966 | char *canon = chroot_canon (opt_chroot, | |
967 | p ? (*p = '\0', cache_file) : "/"); | |
968 | ||
969 | if (canon == NULL) | |
970 | { | |
971 | error (EXIT_FAILURE, errno, | |
972 | _("Can't open cache file directory %s\n"), | |
973 | p ? cache_file : "/"); | |
974 | } | |
975 | ||
976 | if (p) | |
977 | ++p; | |
978 | else | |
979 | p = cache_file; | |
980 | ||
981 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
982 | sprintf (cache_file, "%s/%s", canon, p); | |
983 | free (canon); | |
984 | } | |
985 | ||
b85697f6 UD |
986 | if (opt_manual_link) |
987 | { | |
988 | /* Link all given libraries manually. */ | |
989 | int i; | |
990 | ||
991 | for (i = remaining; i < argc; ++i) | |
a986484f | 992 | manual_link (argv[i]); |
b85697f6 UD |
993 | |
994 | exit (0); | |
995 | } | |
45eca4d1 UD |
996 | |
997 | ||
591e1ffb UD |
998 | if (opt_build_cache) |
999 | init_cache (); | |
1000 | ||
1001 | if (!opt_only_cline) | |
1002 | { | |
1003 | /* Always add the standard search paths. */ | |
8ca91b36 UD |
1004 | add_dir (SLIBDIR); |
1005 | if (strcmp (SLIBDIR, LIBDIR)) | |
1006 | add_dir (LIBDIR); | |
591e1ffb UD |
1007 | |
1008 | parse_conf (config_file); | |
1009 | } | |
45eca4d1 | 1010 | |
591e1ffb UD |
1011 | search_dirs (); |
1012 | ||
1013 | if (opt_build_cache) | |
1014 | save_cache (cache_file); | |
1015 | ||
1016 | return 0; | |
1017 | } |