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8e597a18 | 1 | /* Copyright (C) 1999,2000,2001,2002,2003,2004 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 | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
591e1ffb UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
591e1ffb | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
591e1ffb | 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 | 27 | #include <libintl.h> |
f57ebe29 | 28 | #include <stdbool.h> |
591e1ffb | 29 | #include <stdio.h> |
c96873d7 | 30 | #include <stdio_ext.h> |
591e1ffb UD |
31 | #include <stdlib.h> |
32 | #include <string.h> | |
33 | #include <unistd.h> | |
34 | #include <sys/fcntl.h> | |
35 | #include <sys/mman.h> | |
36 | #include <sys/stat.h> | |
37 | #include <sys/types.h> | |
8e115d80 RM |
38 | #include <glob.h> |
39 | #include <libgen.h> | |
591e1ffb UD |
40 | |
41 | #include "ldconfig.h" | |
45eca4d1 | 42 | #include "dl-cache.h" |
591e1ffb | 43 | |
45eca4d1 | 44 | #include "dl-procinfo.h" |
591e1ffb UD |
45 | |
46 | #ifndef LD_SO_CONF | |
8ca91b36 | 47 | # define LD_SO_CONF SYSCONFDIR "/ld.so.conf" |
591e1ffb UD |
48 | #endif |
49 | ||
50 | /* Get libc version number. */ | |
51 | #include <version.h> | |
52 | ||
53 | #define PACKAGE _libc_intl_domainname | |
54 | ||
591e1ffb UD |
55 | static const struct |
56 | { | |
57 | const char *name; | |
58 | int flag; | |
a986484f | 59 | } lib_types[] = |
591e1ffb UD |
60 | { |
61 | {"libc4", FLAG_LIBC4}, | |
62 | {"libc5", FLAG_ELF_LIBC5}, | |
63 | {"libc6", FLAG_ELF_LIBC6}, | |
64 | {"glibc2", FLAG_ELF_LIBC6} | |
45eca4d1 | 65 | }; |
591e1ffb UD |
66 | |
67 | ||
68 | /* List of directories to handle. */ | |
69 | struct dir_entry | |
70 | { | |
71 | char *path; | |
72 | int flag; | |
4ceae915 AJ |
73 | ino64_t ino; |
74 | dev_t dev; | |
591e1ffb UD |
75 | struct dir_entry *next; |
76 | }; | |
77 | ||
78 | /* The list is unsorted, contains no duplicates. Entries are added at | |
79 | the end. */ | |
80 | static struct dir_entry *dir_entries; | |
81 | ||
82 | /* Flags for different options. */ | |
83 | /* Print Cache. */ | |
c96873d7 | 84 | static int opt_print_cache; |
591e1ffb UD |
85 | |
86 | /* Be verbose. */ | |
c96873d7 | 87 | int opt_verbose; |
591e1ffb | 88 | |
45eca4d1 UD |
89 | /* Format to support. */ |
90 | /* 0: only libc5/glibc2; 1: both; 2: only glibc 2.2. */ | |
91 | int opt_format = 1; | |
92 | ||
591e1ffb UD |
93 | /* Build cache. */ |
94 | static int opt_build_cache = 1; | |
95 | ||
96 | /* Generate links. */ | |
97 | static int opt_link = 1; | |
98 | ||
99 | /* Only process directories specified on the command line. */ | |
c96873d7 | 100 | static int opt_only_cline; |
591e1ffb UD |
101 | |
102 | /* Path to root for chroot. */ | |
103 | static char *opt_chroot; | |
104 | ||
b85697f6 | 105 | /* Manually link given shared libraries. */ |
c96873d7 | 106 | static int opt_manual_link; |
b85697f6 | 107 | |
591e1ffb | 108 | /* Cache file to use. */ |
b4a555d6 | 109 | static char *cache_file; |
591e1ffb UD |
110 | |
111 | /* Configuration file. */ | |
112 | static const char *config_file; | |
113 | ||
0cfbb8c6 UD |
114 | /* Mask to use for important hardware capabilities. */ |
115 | static unsigned long int hwcap_mask = HWCAP_IMPORTANT; | |
116 | ||
591e1ffb UD |
117 | /* Name and version of program. */ |
118 | static void print_version (FILE *stream, struct argp_state *state); | |
119 | void (*argp_program_version_hook) (FILE *, struct argp_state *) | |
120 | = print_version; | |
121 | ||
122 | /* Definitions of arguments for argp functions. */ | |
123 | static const struct argp_option options[] = | |
124 | { | |
125 | { "print-cache", 'p', NULL, 0, N_("Print cache"), 0}, | |
126 | { "verbose", 'v', NULL, 0, N_("Generate verbose messages"), 0}, | |
127 | { NULL, 'N', NULL, 0, N_("Don't build cache"), 0}, | |
128 | { NULL, 'X', NULL, 0, N_("Don't generate links"), 0}, | |
129 | { NULL, 'r', "ROOT", 0, N_("Change to and use ROOT as root directory"), 0}, | |
130 | { NULL, 'C', "CACHE", 0, N_("Use CACHE as cache file"), 0}, | |
131 | { NULL, 'f', "CONF", 0, N_("Use CONF as configuration file"), 0}, | |
132 | { NULL, 'n', NULL, 0, N_("Only process directories specified on the command line. Don't build cache."), 0}, | |
b85697f6 | 133 | { NULL, 'l', NULL, 0, N_("Manually link individual libraries."), 0}, |
45eca4d1 | 134 | { "format", 'c', "FORMAT", 0, N_("Format to use: new, old or compat (default)"), 0}, |
591e1ffb UD |
135 | { NULL, 0, NULL, 0, NULL, 0 } |
136 | }; | |
137 | ||
11bf8ce1 UD |
138 | #define PROCINFO_CLASS static |
139 | #include <dl-procinfo.c> | |
140 | ||
591e1ffb UD |
141 | /* Short description of program. */ |
142 | static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings."); | |
143 | ||
144 | /* Prototype for option handler. */ | |
145 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
146 | ||
147 | /* Data structure to communicate with argp functions. */ | |
148 | static struct argp argp = | |
149 | { | |
150 | options, parse_opt, NULL, doc, NULL, NULL, NULL | |
151 | }; | |
152 | ||
a6c1c03a AJ |
153 | /* Check if string corresponds to an important hardware capability or |
154 | a platform. */ | |
45eca4d1 | 155 | static int |
a6c1c03a | 156 | is_hwcap_platform (const char *name) |
45eca4d1 UD |
157 | { |
158 | int hwcap_idx = _dl_string_hwcap (name); | |
8ca91b36 | 159 | |
0cfbb8c6 | 160 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & hwcap_mask)) |
45eca4d1 | 161 | return 1; |
a6c1c03a AJ |
162 | |
163 | hwcap_idx = _dl_string_platform (name); | |
164 | if (hwcap_idx != -1) | |
165 | return 1; | |
166 | ||
676fde70 UD |
167 | #ifdef USE_TLS |
168 | if (strcmp (name, "tls") == 0) | |
169 | return 1; | |
170 | #endif | |
171 | ||
45eca4d1 UD |
172 | return 0; |
173 | } | |
174 | ||
a6c1c03a AJ |
175 | /* Get hwcap (including platform) encoding of path. */ |
176 | static uint64_t | |
45eca4d1 UD |
177 | path_hwcap (const char *path) |
178 | { | |
179 | char *str = xstrdup (path); | |
180 | char *ptr; | |
a6c1c03a AJ |
181 | uint64_t hwcap = 0; |
182 | uint64_t h; | |
45eca4d1 UD |
183 | |
184 | size_t len; | |
185 | ||
186 | len = strlen (str); | |
187 | if (str[len] == '/') | |
188 | str[len] = '\0'; | |
189 | ||
190 | /* Search pathname from the end and check for hwcap strings. */ | |
191 | for (;;) | |
192 | { | |
193 | ptr = strrchr (str, '/'); | |
194 | ||
195 | if (ptr == NULL) | |
196 | break; | |
197 | ||
a6c1c03a | 198 | h = _dl_string_hwcap (ptr + 1); |
45eca4d1 | 199 | |
59553897 UD |
200 | if (h == (uint64_t) -1) |
201 | { | |
202 | h = _dl_string_platform (ptr + 1); | |
203 | if (h == (uint64_t) -1) | |
676fde70 UD |
204 | { |
205 | #ifdef USE_TLS | |
206 | if (strcmp (ptr + 1, "tls") == 0) | |
207 | h = 63; | |
208 | else | |
209 | #endif | |
210 | break; | |
211 | } | |
59553897 | 212 | } |
a6c1c03a | 213 | hwcap += 1ULL << h; |
591e1ffb | 214 | |
45eca4d1 UD |
215 | /* Search the next part of the path. */ |
216 | *ptr = '\0'; | |
217 | } | |
218 | ||
219 | free (str); | |
220 | return hwcap; | |
221 | } | |
591e1ffb UD |
222 | |
223 | /* Handle program arguments. */ | |
224 | static error_t | |
225 | parse_opt (int key, char *arg, struct argp_state *state) | |
226 | { | |
227 | switch (key) | |
228 | { | |
229 | case 'C': | |
230 | cache_file = arg; | |
231 | break; | |
232 | case 'f': | |
233 | config_file = arg; | |
234 | break; | |
b85697f6 UD |
235 | case 'l': |
236 | opt_manual_link = 1; | |
237 | break; | |
591e1ffb UD |
238 | case 'N': |
239 | opt_build_cache = 0; | |
240 | break; | |
241 | case 'n': | |
242 | opt_build_cache = 0; | |
243 | opt_only_cline = 1; | |
244 | break; | |
245 | case 'p': | |
246 | opt_print_cache = 1; | |
247 | break; | |
248 | case 'r': | |
249 | opt_chroot = arg; | |
250 | break; | |
251 | case 'v': | |
252 | opt_verbose = 1; | |
253 | break; | |
254 | case 'X': | |
255 | opt_link = 0; | |
256 | break; | |
45eca4d1 UD |
257 | case 'c': |
258 | if (strcmp (arg, "old") == 0) | |
259 | opt_format = 0; | |
260 | else if (strcmp (arg, "compat") == 0) | |
261 | opt_format = 1; | |
262 | else if (strcmp (arg, "new") == 0) | |
263 | opt_format = 2; | |
264 | break; | |
591e1ffb UD |
265 | default: |
266 | return ARGP_ERR_UNKNOWN; | |
267 | } | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | /* Print the version information. */ | |
273 | static void | |
274 | print_version (FILE *stream, struct argp_state *state) | |
275 | { | |
276 | fprintf (stream, "ldconfig (GNU %s) %s\n", PACKAGE, VERSION); | |
277 | fprintf (stream, gettext ("\ | |
278 | Copyright (C) %s Free Software Foundation, Inc.\n\ | |
279 | This is free software; see the source for copying conditions. There is NO\n\ | |
280 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ | |
8e597a18 | 281 | "), "2004"); |
591e1ffb UD |
282 | fprintf (stream, gettext ("Written by %s.\n"), |
283 | "Andreas Jaeger"); | |
284 | } | |
285 | ||
a8fd59b0 AJ |
286 | /* Add a single directory entry. */ |
287 | static void | |
288 | add_single_dir (struct dir_entry *entry, int verbose) | |
289 | { | |
290 | struct dir_entry *ptr, *prev; | |
291 | ||
292 | ptr = dir_entries; | |
293 | prev = ptr; | |
294 | while (ptr != NULL) | |
295 | { | |
296 | /* Check for duplicates. */ | |
4ceae915 | 297 | if (ptr->ino == entry->ino && ptr->dev == entry->dev) |
a8fd59b0 AJ |
298 | { |
299 | if (opt_verbose && verbose) | |
300 | error (0, 0, _("Path `%s' given more than once"), entry->path); | |
301 | /* Use the newer information. */ | |
302 | ptr->flag = entry->flag; | |
4ceae915 | 303 | free (entry->path); |
a8fd59b0 AJ |
304 | free (entry); |
305 | break; | |
306 | } | |
307 | prev = ptr; | |
308 | ptr = ptr->next; | |
309 | } | |
310 | /* Is this the first entry? */ | |
311 | if (ptr == NULL && dir_entries == NULL) | |
312 | dir_entries = entry; | |
313 | else if (ptr == NULL) | |
314 | prev->next = entry; | |
315 | } | |
316 | ||
591e1ffb UD |
317 | /* Add one directory to the list of directories to process. */ |
318 | static void | |
319 | add_dir (const char *line) | |
320 | { | |
321 | char *equal_sign; | |
a8fd59b0 | 322 | struct dir_entry *entry; |
591e1ffb | 323 | unsigned int i; |
4ceae915 | 324 | struct stat64 stat_buf; |
45eca4d1 | 325 | |
591e1ffb UD |
326 | entry = xmalloc (sizeof (struct dir_entry)); |
327 | entry->next = NULL; | |
45eca4d1 | 328 | |
591e1ffb UD |
329 | /* Search for an '=' sign. */ |
330 | entry->path = xstrdup (line); | |
331 | equal_sign = strchr (entry->path, '='); | |
332 | if (equal_sign) | |
333 | { | |
334 | *equal_sign = '\0'; | |
335 | ++equal_sign; | |
336 | entry->flag = FLAG_ANY; | |
a986484f | 337 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i) |
591e1ffb UD |
338 | if (strcmp (equal_sign, lib_types[i].name) == 0) |
339 | { | |
340 | entry->flag = lib_types[i].flag; | |
341 | break; | |
342 | } | |
343 | if (entry->flag == FLAG_ANY) | |
344 | error (0, 0, _("%s is not a known library type"), equal_sign); | |
345 | } | |
346 | else | |
347 | { | |
348 | entry->flag = FLAG_ANY; | |
349 | } | |
350 | ||
69acbe9f UD |
351 | /* Canonify path: for now only remove leading and trailing |
352 | whitespace and the trailing slashes slashes. */ | |
591e1ffb | 353 | i = strlen (entry->path) - 1; |
69acbe9f UD |
354 | |
355 | while (isspace (entry->path[i]) && i > 0) | |
356 | entry->path[i--] = '\0'; | |
357 | ||
591e1ffb | 358 | while (entry->path[i] == '/' && i > 0) |
69acbe9f | 359 | entry->path[i--] = '\0'; |
45eca4d1 | 360 | |
4ceae915 AJ |
361 | if (stat64 (entry->path, &stat_buf)) |
362 | { | |
8645ad47 AJ |
363 | if (opt_verbose) |
364 | error (0, errno, _("Can't stat %s"), entry->path); | |
4ceae915 AJ |
365 | free (entry->path); |
366 | free (entry); | |
367 | return; | |
368 | } | |
369 | ||
370 | entry->ino = stat_buf.st_ino; | |
371 | entry->dev = stat_buf.st_dev; | |
372 | ||
373 | add_single_dir (entry, 1); | |
591e1ffb UD |
374 | } |
375 | ||
376 | ||
b4a555d6 UD |
377 | static int |
378 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
379 | { | |
380 | int ret; | |
381 | char *canon_path; | |
382 | ||
383 | if (!opt_chroot) | |
384 | return stat64 (real_path, st); | |
385 | ||
386 | ret = lstat64 (real_path, st); | |
387 | if (ret || !S_ISLNK (st->st_mode)) | |
388 | return ret; | |
389 | ||
390 | canon_path = chroot_canon (opt_chroot, path); | |
391 | if (canon_path == NULL) | |
392 | return -1; | |
393 | ||
394 | ret = stat64 (canon_path, st); | |
395 | free (canon_path); | |
396 | return ret; | |
397 | } | |
398 | ||
591e1ffb UD |
399 | /* Create a symbolic link from soname to libname in directory path. */ |
400 | static void | |
b4a555d6 UD |
401 | create_links (const char *real_path, const char *path, const char *libname, |
402 | const char *soname) | |
591e1ffb | 403 | { |
7b0d235c | 404 | char *full_libname, *full_soname; |
b4a555d6 UD |
405 | char *real_full_libname, *real_full_soname; |
406 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
407 | int do_link = 1; |
408 | int do_remove = 1; | |
409 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 410 | |
591e1ffb | 411 | /* Get complete path. */ |
7b0d235c | 412 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 413 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
414 | sprintf (full_libname, "%s/%s", path, libname); |
415 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
416 | if (opt_chroot) |
417 | { | |
418 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 419 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
420 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
421 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
422 | } | |
423 | else | |
424 | { | |
425 | real_full_libname = full_libname; | |
426 | real_full_soname = full_soname; | |
427 | } | |
591e1ffb UD |
428 | |
429 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 430 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 431 | { |
b4a555d6 | 432 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
433 | { |
434 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
435 | return; | |
436 | } | |
437 | if (stat_lib.st_dev == stat_so.st_dev | |
438 | && stat_lib.st_ino == stat_so.st_ino) | |
439 | /* Link is already correct. */ | |
440 | do_link = 0; | |
b4a555d6 | 441 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
442 | && !S_ISLNK (lstat_so.st_mode)) |
443 | { | |
444 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
445 | do_link = 0; | |
446 | do_remove = 0; | |
447 | } | |
448 | } | |
b4a555d6 | 449 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
450 | || !S_ISLNK (lstat_so.st_mode)) |
451 | /* Unless it is a stale symlink, there is no need to remove. */ | |
452 | do_remove = 0; | |
453 | ||
454 | if (opt_verbose) | |
455 | printf ("\t%s -> %s", soname, libname); | |
456 | ||
457 | if (do_link && opt_link) | |
458 | { | |
459 | /* Remove old link. */ | |
460 | if (do_remove) | |
b4a555d6 | 461 | if (unlink (real_full_soname)) |
591e1ffb UD |
462 | { |
463 | error (0, 0, _("Can't unlink %s"), full_soname); | |
464 | do_link = 0; | |
465 | } | |
466 | /* Create symbolic link. */ | |
b4a555d6 | 467 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
468 | { |
469 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
470 | do_link = 0; | |
471 | } | |
472 | if (opt_verbose) | |
473 | { | |
474 | if (do_link) | |
475 | fputs (_(" (changed)\n"), stdout); | |
476 | else | |
477 | fputs (_(" (SKIPPED)\n"), stdout); | |
478 | } | |
479 | } | |
480 | else if (opt_verbose) | |
481 | fputs ("\n", stdout); | |
482 | } | |
483 | ||
b85697f6 UD |
484 | /* Manually link the given library. */ |
485 | static void | |
486 | manual_link (char *library) | |
487 | { | |
488 | char *path; | |
b4a555d6 UD |
489 | char *real_path; |
490 | char *real_library; | |
b85697f6 UD |
491 | char *libname; |
492 | char *soname; | |
b4a555d6 | 493 | struct stat64 stat_buf; |
b85697f6 | 494 | int flag; |
a986484f | 495 | unsigned int osversion; |
b85697f6 UD |
496 | |
497 | /* Prepare arguments for create_links call. Split library name in | |
498 | directory and filename first. Since path is allocated, we've got | |
499 | to be careful to free at the end. */ | |
500 | path = xstrdup (library); | |
501 | libname = strrchr (path, '/'); | |
502 | ||
503 | if (libname) | |
504 | { | |
505 | /* Successfully split names. Check if path is just "/" to avoid | |
506 | an empty path. */ | |
507 | if (libname == path) | |
508 | { | |
509 | libname = library + 1; | |
510 | path = xrealloc (path, 2); | |
511 | strcpy (path, "/"); | |
512 | } | |
513 | else | |
514 | { | |
515 | *libname = '\0'; | |
516 | ++libname; | |
517 | } | |
518 | } | |
519 | else | |
520 | { | |
521 | /* There's no path, construct one. */ | |
522 | libname = library; | |
523 | path = xrealloc (path, 2); | |
524 | strcpy (path, "."); | |
525 | } | |
526 | ||
b4a555d6 UD |
527 | if (opt_chroot) |
528 | { | |
529 | real_path = chroot_canon (opt_chroot, path); | |
530 | if (real_path == NULL) | |
531 | { | |
532 | error (0, errno, _("Can't find %s"), path); | |
533 | free (path); | |
534 | return; | |
535 | } | |
536 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
537 | sprintf (real_library, "%s/%s", real_path, libname); | |
538 | } | |
539 | else | |
540 | { | |
541 | real_path = path; | |
542 | real_library = library; | |
543 | } | |
544 | ||
b85697f6 | 545 | /* Do some sanity checks first. */ |
b4a555d6 | 546 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 UD |
547 | { |
548 | error (0, errno, _("Can't lstat %s"), library); | |
549 | free (path); | |
550 | return; | |
551 | } | |
552 | /* We don't want links here! */ | |
553 | else if (!S_ISREG (stat_buf.st_mode)) | |
554 | { | |
555 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
556 | library); | |
557 | free (path); | |
558 | return; | |
559 | } | |
a986484f UD |
560 | if (process_file (real_library, library, libname, &flag, &osversion, |
561 | &soname, 0)) | |
b85697f6 UD |
562 | { |
563 | error (0, 0, _("No link created since soname could not be found for %s"), | |
564 | library); | |
565 | free (path); | |
566 | return; | |
567 | } | |
b4a555d6 | 568 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
569 | free (soname); |
570 | free (path); | |
571 | } | |
572 | ||
573 | ||
591e1ffb UD |
574 | /* Read a whole directory and search for libraries. |
575 | The purpose is two-fold: | |
576 | - search for libraries which will be added to the cache | |
577 | - create symbolic links to the soname for each library | |
578 | ||
579 | This has to be done separatly for each directory. | |
45eca4d1 | 580 | |
591e1ffb UD |
581 | To keep track of which libraries to add to the cache and which |
582 | links to create, we save a list of all libraries. | |
583 | ||
584 | The algorithm is basically: | |
585 | for all libraries in the directory do | |
586 | get soname of library | |
587 | if soname is already in list | |
588 | if new library is newer, replace entry | |
589 | otherwise ignore this library | |
590 | otherwise add library to list | |
45eca4d1 | 591 | |
591e1ffb UD |
592 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
593 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
594 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
595 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
596 | libxy.so.1.1. */ | |
597 | ||
598 | /* Information for one library. */ | |
45eca4d1 | 599 | struct dlib_entry |
591e1ffb UD |
600 | { |
601 | char *name; | |
602 | char *soname; | |
603 | int flag; | |
604 | int is_link; | |
a986484f | 605 | unsigned int osversion; |
591e1ffb UD |
606 | struct dlib_entry *next; |
607 | }; | |
608 | ||
609 | ||
610 | static void | |
611 | search_dir (const struct dir_entry *entry) | |
612 | { | |
613 | DIR *dir; | |
2b510e91 | 614 | struct dirent64 *direntry; |
b4a555d6 UD |
615 | char *file_name, *dir_name, *real_file_name, *real_name; |
616 | int file_name_len, real_file_name_len, len; | |
591e1ffb UD |
617 | char *soname; |
618 | struct dlib_entry *dlibs; | |
619 | struct dlib_entry *dlib_ptr; | |
4ceae915 AJ |
620 | struct stat64 lstat_buf, stat_buf; |
621 | int is_link, is_dir; | |
a6c1c03a | 622 | uint64_t hwcap = path_hwcap (entry->path); |
a986484f | 623 | unsigned int osversion; |
45eca4d1 | 624 | |
7b0d235c AJ |
625 | file_name_len = PATH_MAX; |
626 | file_name = alloca (file_name_len); | |
f0189a54 | 627 | |
591e1ffb UD |
628 | dlibs = NULL; |
629 | ||
630 | if (opt_verbose) | |
45eca4d1 UD |
631 | { |
632 | if (hwcap != 0) | |
5a35dfca | 633 | printf ("%s: (hwcap: 0x%" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
634 | else |
635 | printf ("%s:\n", entry->path); | |
636 | } | |
637 | ||
b4a555d6 UD |
638 | if (opt_chroot) |
639 | { | |
640 | dir_name = chroot_canon (opt_chroot, entry->path); | |
641 | real_file_name_len = PATH_MAX; | |
642 | real_file_name = alloca (real_file_name_len); | |
643 | } | |
644 | else | |
645 | { | |
646 | dir_name = entry->path; | |
647 | real_file_name_len = 0; | |
648 | real_file_name = file_name; | |
649 | } | |
650 | ||
651 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) | |
591e1ffb UD |
652 | { |
653 | if (opt_verbose) | |
654 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
655 | if (opt_chroot && dir_name) |
656 | free (dir_name); | |
591e1ffb UD |
657 | return; |
658 | } | |
45eca4d1 | 659 | |
2b510e91 | 660 | while ((direntry = readdir64 (dir)) != NULL) |
591e1ffb UD |
661 | { |
662 | int flag; | |
663 | #ifdef _DIRENT_HAVE_D_TYPE | |
664 | /* We only look at links and regular files. */ | |
665 | if (direntry->d_type != DT_UNKNOWN | |
666 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
667 | && direntry->d_type != DT_REG |
668 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
669 | continue; |
670 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
671 | /* Does this file look like a shared library or is it a hwcap |
672 | subdirectory? The dynamic linker is also considered as | |
673 | shared library. */ | |
674 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
675 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
676 | || strstr (direntry->d_name, ".so") == NULL) | |
95ce33a5 UD |
677 | && ( |
678 | #ifdef _DIRENT_HAVE_D_TYPE | |
679 | direntry->d_type == DT_REG || | |
680 | #endif | |
681 | !is_hwcap_platform (direntry->d_name))) | |
591e1ffb | 682 | continue; |
7b0d235c AJ |
683 | len = strlen (entry->path) + strlen (direntry->d_name); |
684 | if (len > file_name_len) | |
591e1ffb | 685 | { |
7b0d235c AJ |
686 | file_name_len = len + 1; |
687 | file_name = alloca (file_name_len); | |
b4a555d6 UD |
688 | if (!opt_chroot) |
689 | real_file_name = file_name; | |
690 | } | |
691 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
692 | if (opt_chroot) | |
693 | { | |
694 | len = strlen (dir_name) + strlen (direntry->d_name); | |
695 | if (len > real_file_name_len) | |
696 | { | |
697 | real_file_name_len = len + 1; | |
698 | real_file_name = alloca (real_file_name_len); | |
699 | } | |
700 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 701 | } |
7c3002f0 UD |
702 | #ifdef _DIRENT_HAVE_D_TYPE |
703 | if (direntry->d_type != DT_UNKNOWN) | |
4ceae915 | 704 | lstat_buf.st_mode = DTTOIF (direntry->d_type); |
7c3002f0 UD |
705 | else |
706 | #endif | |
95ce33a5 | 707 | if (__builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) |
7c3002f0 | 708 | { |
95ce33a5 | 709 | error (0, errno, _("Cannot lstat %s"), file_name); |
7c3002f0 UD |
710 | continue; |
711 | } | |
712 | ||
4ceae915 AJ |
713 | is_link = S_ISLNK (lstat_buf.st_mode); |
714 | if (is_link) | |
715 | { | |
716 | /* In case of symlink, we check if the symlink refers to | |
717 | a directory. */ | |
95ce33a5 | 718 | if (__builtin_expect (stat64 (real_file_name, &stat_buf), 0)) |
4ceae915 | 719 | { |
8645ad47 | 720 | if (opt_verbose) |
95ce33a5 | 721 | error (0, errno, _("Cannot stat %s"), file_name); |
647eb037 UD |
722 | |
723 | /* Remove stale symlinks. */ | |
724 | if (strstr (direntry->d_name, ".so.")) | |
725 | unlink (real_file_name); | |
4ceae915 AJ |
726 | continue; |
727 | } | |
728 | is_dir = S_ISDIR (stat_buf.st_mode); | |
729 | } | |
730 | else | |
731 | is_dir = S_ISDIR (lstat_buf.st_mode); | |
732 | ||
733 | if (is_dir && is_hwcap_platform (direntry->d_name)) | |
45eca4d1 | 734 | { |
a8fd59b0 AJ |
735 | /* Handle subdirectory later. */ |
736 | struct dir_entry *new_entry; | |
737 | ||
738 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 739 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
740 | new_entry->flag = entry->flag; |
741 | new_entry->next = NULL; | |
4ceae915 AJ |
742 | if (is_link) |
743 | { | |
744 | new_entry->ino = stat_buf.st_ino; | |
745 | new_entry->dev = stat_buf.st_dev; | |
746 | } | |
747 | else | |
748 | { | |
95ce33a5 UD |
749 | #ifdef _DIRENT_HAVE_D_TYPE |
750 | /* We have filled in lstat only #ifndef | |
751 | _DIRENT_HAVE_D_TYPE. Fill it in if needed. */ | |
752 | if (direntry->d_type != DT_UNKNOWN | |
753 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), | |
754 | 0)) | |
755 | { | |
756 | error (0, errno, _("Cannot lstat %s"), file_name); | |
757 | free (new_entry->path); | |
758 | free (new_entry); | |
759 | continue; | |
760 | } | |
761 | #endif | |
762 | ||
4ceae915 AJ |
763 | new_entry->ino = lstat_buf.st_ino; |
764 | new_entry->dev = lstat_buf.st_dev; | |
765 | } | |
a8fd59b0 | 766 | add_single_dir (new_entry, 0); |
45eca4d1 UD |
767 | continue; |
768 | } | |
0f843f89 | 769 | else if (!S_ISREG (lstat_buf.st_mode) && !is_link) |
591e1ffb UD |
770 | continue; |
771 | ||
b4a555d6 UD |
772 | if (opt_chroot && is_link) |
773 | { | |
774 | real_name = chroot_canon (opt_chroot, file_name); | |
775 | if (real_name == NULL) | |
776 | { | |
777 | if (strstr (file_name, ".so") == NULL) | |
778 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
779 | continue; | |
780 | } | |
781 | } | |
782 | else | |
783 | real_name = real_file_name; | |
591e1ffb | 784 | |
b4a555d6 | 785 | if (process_file (real_name, file_name, direntry->d_name, &flag, |
a986484f | 786 | &osversion, &soname, is_link)) |
b4a555d6 UD |
787 | { |
788 | if (real_name != real_file_name) | |
789 | free (real_name); | |
790 | continue; | |
791 | } | |
792 | ||
82d8607d UD |
793 | |
794 | /* A link may just point to itself. */ | |
591e1ffb UD |
795 | if (is_link) |
796 | { | |
82d8607d UD |
797 | /* If the path the link points to isn't its soname and it is not |
798 | .so symlink for ld(1) only, we treat it as a normal file. */ | |
2fe98a4a | 799 | const char *real_base_name = basename (real_file_name); |
82d8607d UD |
800 | |
801 | if (strcmp (real_base_name, soname) != 0) | |
802 | { | |
803 | len = strlen (real_base_name); | |
804 | if (len < strlen (".so") | |
805 | || strcmp (real_base_name + len - strlen (".so"), ".so") != 0 | |
806 | || strncmp (real_base_name, soname, len) != 0) | |
807 | is_link = 0; | |
808 | } | |
809 | } | |
45eca4d1 | 810 | |
395412a0 UD |
811 | if (real_name != real_file_name) |
812 | free (real_name); | |
813 | ||
82d8607d UD |
814 | if (is_link) |
815 | { | |
816 | free (soname); | |
817 | soname = xstrdup (direntry->d_name); | |
818 | } | |
819 | ||
591e1ffb UD |
820 | if (flag == FLAG_ELF |
821 | && (entry->flag == FLAG_ELF_LIBC5 | |
822 | || entry->flag == FLAG_ELF_LIBC6)) | |
823 | flag = entry->flag; | |
824 | /* Some sanity checks to print warnings. */ | |
825 | if (opt_verbose) | |
826 | { | |
827 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
828 | && entry->flag != FLAG_ANY) | |
7b0d235c | 829 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
830 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
831 | && entry->flag != FLAG_ANY) | |
7b0d235c | 832 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
833 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
834 | && entry->flag != FLAG_ANY) | |
7b0d235c | 835 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 836 | } |
45eca4d1 | 837 | |
591e1ffb UD |
838 | /* Add library to list. */ |
839 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
840 | { | |
841 | /* Is soname already in list? */ | |
842 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
843 | { | |
844 | /* Prefer a file to a link, otherwise check which one | |
845 | is newer. */ | |
846 | if ((!is_link && dlib_ptr->is_link) | |
847 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 848 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
849 | { |
850 | /* It's newer - add it. */ | |
851 | /* Flag should be the same - sanity check. */ | |
852 | if (dlib_ptr->flag != flag) | |
853 | { | |
854 | if (dlib_ptr->flag == FLAG_ELF | |
855 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
856 | dlib_ptr->flag = flag; | |
857 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
858 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
859 | && flag == FLAG_ELF) | |
860 | dlib_ptr->flag = flag; | |
861 | else | |
862 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
863 | dlib_ptr->name, direntry->d_name, entry->path); | |
864 | } | |
865 | free (dlib_ptr->name); | |
b15ff9d6 | 866 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
867 | dlib_ptr->name = xstrdup (direntry->d_name); |
868 | dlib_ptr->is_link = is_link; | |
869 | } | |
870 | /* Don't add this library, abort loop. */ | |
871 | /* Also free soname, since it's dynamically allocated. */ | |
872 | free (soname); | |
873 | break; | |
874 | } | |
875 | } | |
876 | /* Add the library if it's not already in. */ | |
877 | if (dlib_ptr == NULL) | |
878 | { | |
879 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
880 | dlib_ptr->name = xstrdup (direntry->d_name); | |
881 | dlib_ptr->flag = flag; | |
a986484f | 882 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
883 | dlib_ptr->soname = soname; |
884 | dlib_ptr->is_link = is_link; | |
885 | /* Add at head of list. */ | |
886 | dlib_ptr->next = dlibs; | |
887 | dlibs = dlib_ptr; | |
888 | } | |
889 | } | |
890 | ||
891 | closedir (dir); | |
892 | ||
893 | /* Now dlibs contains a list of all libs - add those to the cache | |
894 | and created all symbolic links. */ | |
895 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
896 | { | |
897 | /* Don't create links to links. */ | |
898 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
899 | create_links (dir_name, entry->path, dlib_ptr->name, |
900 | dlib_ptr->soname); | |
591e1ffb | 901 | if (opt_build_cache) |
a986484f UD |
902 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
903 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
904 | } |
905 | ||
906 | /* Free all resources. */ | |
45eca4d1 | 907 | while (dlibs) |
591e1ffb UD |
908 | { |
909 | dlib_ptr = dlibs; | |
910 | free (dlib_ptr->soname); | |
911 | free (dlib_ptr->name); | |
912 | dlibs = dlibs->next; | |
913 | free (dlib_ptr); | |
914 | } | |
b4a555d6 UD |
915 | |
916 | if (opt_chroot && dir_name) | |
917 | free (dir_name); | |
591e1ffb UD |
918 | } |
919 | ||
920 | /* Search through all libraries. */ | |
921 | static void | |
922 | search_dirs (void) | |
923 | { | |
924 | struct dir_entry *entry; | |
925 | ||
926 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
927 | search_dir (entry); | |
928 | ||
929 | /* Free all allocated memory. */ | |
930 | while (dir_entries) | |
931 | { | |
932 | entry = dir_entries; | |
933 | dir_entries = dir_entries->next; | |
934 | free (entry->path); | |
935 | free (entry); | |
936 | } | |
937 | } | |
938 | ||
939 | ||
8e115d80 RM |
940 | static void parse_conf_include (const char *config_file, unsigned int lineno, |
941 | bool do_chroot, const char *pattern); | |
942 | ||
591e1ffb UD |
943 | /* Parse configuration file. */ |
944 | static void | |
8e115d80 | 945 | parse_conf (const char *filename, bool do_chroot) |
591e1ffb | 946 | { |
b4a555d6 | 947 | FILE *file = NULL; |
591e1ffb | 948 | char *line = NULL; |
b4a555d6 | 949 | const char *canon; |
591e1ffb | 950 | size_t len = 0; |
8e115d80 | 951 | unsigned int lineno; |
45eca4d1 | 952 | |
8e115d80 | 953 | if (do_chroot && opt_chroot) |
b4a555d6 UD |
954 | { |
955 | canon = chroot_canon (opt_chroot, filename); | |
956 | if (canon) | |
957 | file = fopen (canon, "r"); | |
958 | else | |
959 | canon = filename; | |
960 | } | |
961 | else | |
962 | { | |
963 | canon = filename; | |
964 | file = fopen (filename, "r"); | |
965 | } | |
591e1ffb UD |
966 | |
967 | if (file == NULL) | |
968 | { | |
b4a555d6 UD |
969 | error (0, errno, _("Can't open configuration file %s"), canon); |
970 | if (canon != filename) | |
971 | free ((char *) canon); | |
591e1ffb UD |
972 | return; |
973 | } | |
974 | ||
c96873d7 UD |
975 | /* No threads use this stream. */ |
976 | __fsetlocking (file, FSETLOCKING_BYCALLER); | |
977 | ||
b4a555d6 UD |
978 | if (canon != filename) |
979 | free ((char *) canon); | |
980 | ||
8e115d80 | 981 | lineno = 0; |
591e1ffb UD |
982 | do |
983 | { | |
984 | ssize_t n = getline (&line, &len, file); | |
985 | if (n < 0) | |
986 | break; | |
987 | ||
8e115d80 | 988 | ++lineno; |
591e1ffb UD |
989 | if (line[n - 1] == '\n') |
990 | line[n - 1] = '\0'; | |
991 | ||
992 | /* Because the file format does not know any form of quoting we | |
993 | can search forward for the next '#' character and if found | |
994 | make it terminating the line. */ | |
995 | *strchrnul (line, '#') = '\0'; | |
996 | ||
69acbe9f UD |
997 | /* Remove leading whitespace. NUL is no whitespace character. */ |
998 | char *cp = line; | |
999 | while (isspace (*cp)) | |
1000 | ++cp; | |
1001 | ||
591e1ffb | 1002 | /* If the line is blank it is ignored. */ |
69acbe9f | 1003 | if (cp[0] == '\0') |
591e1ffb UD |
1004 | continue; |
1005 | ||
8e115d80 RM |
1006 | if (!strncmp (cp, "include", 7) && isblank (cp[7])) |
1007 | { | |
1008 | char *dir; | |
1009 | cp += 8; | |
1010 | while ((dir = strsep (&cp, " \t")) != NULL) | |
1011 | if (dir[0] != '\0') | |
1012 | parse_conf_include (filename, lineno, do_chroot, dir); | |
1013 | } | |
1014 | else | |
1015 | add_dir (cp); | |
69acbe9f UD |
1016 | } |
1017 | while (!feof_unlocked (file)); | |
591e1ffb UD |
1018 | |
1019 | /* Free buffer and close file. */ | |
1020 | free (line); | |
1021 | fclose (file); | |
1022 | } | |
1023 | ||
8e115d80 RM |
1024 | /* Handle one word in an `include' line, a glob pattern of additional |
1025 | config files to read. */ | |
1026 | static void | |
1027 | parse_conf_include (const char *config_file, unsigned int lineno, | |
1028 | bool do_chroot, const char *pattern) | |
1029 | { | |
1030 | if (opt_chroot && pattern[0] != '/') | |
1031 | error (EXIT_FAILURE, 0, | |
1032 | _("need absolute file name for configuration file when using -r")); | |
1033 | ||
1034 | char *copy = NULL; | |
1035 | if (pattern[0] != '/' && strchr (config_file, '/') != NULL) | |
1036 | { | |
1037 | asprintf (©, "%s/%s", dirname (strdupa (config_file)), pattern); | |
1038 | pattern = copy; | |
1039 | } | |
1040 | ||
1041 | glob64_t gl; | |
1042 | int result; | |
1043 | if (do_chroot && opt_chroot) | |
1044 | { | |
1045 | char *canon = chroot_canon (opt_chroot, pattern); | |
1046 | result = glob64 (canon ?: pattern, 0, NULL, &gl); | |
1047 | free (canon); | |
1048 | } | |
1049 | else | |
1050 | result = glob64 (pattern, 0, NULL, &gl); | |
1051 | ||
1052 | switch (result) | |
1053 | { | |
1054 | case 0: | |
1055 | for (size_t i = 0; i < gl.gl_pathc; ++i) | |
1056 | parse_conf (gl.gl_pathv[i], false); | |
1057 | globfree64 (&gl); | |
1058 | break; | |
1059 | ||
1060 | case GLOB_NOMATCH: | |
1061 | break; | |
1062 | ||
1063 | case GLOB_NOSPACE: | |
1064 | errno = ENOMEM; | |
1065 | case GLOB_ABORTED: | |
1066 | if (opt_verbose) | |
1067 | error (0, errno, _("%s:%u: cannot read directory %s"), | |
1068 | config_file, lineno, pattern); | |
1069 | break; | |
1070 | ||
1071 | default: | |
1072 | abort (); | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | if (copy) | |
1077 | free (copy); | |
1078 | } | |
1079 | ||
0cfbb8c6 UD |
1080 | /* Honour LD_HWCAP_MASK. */ |
1081 | static void | |
1082 | set_hwcap (void) | |
1083 | { | |
1084 | char *mask = getenv ("LD_HWCAP_MASK"); | |
1085 | ||
1086 | if (mask) | |
1087 | hwcap_mask = strtoul (mask, NULL, 0); | |
1088 | } | |
1089 | ||
591e1ffb UD |
1090 | |
1091 | int | |
1092 | main (int argc, char **argv) | |
1093 | { | |
1094 | int remaining; | |
45eca4d1 | 1095 | |
591e1ffb UD |
1096 | /* Parse and process arguments. */ |
1097 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
1098 | ||
11bf8ce1 | 1099 | /* Remaining arguments are additional directories if opt_manual_link |
b85697f6 UD |
1100 | is not set. */ |
1101 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
1102 | { |
1103 | int i; | |
1104 | for (i = remaining; i < argc; ++i) | |
11bf8ce1 UD |
1105 | if (opt_build_cache && argv[i][0] != '/') |
1106 | error (EXIT_FAILURE, 0, | |
1107 | _("relative path `%s' used to build cache"), | |
1108 | argv[i]); | |
1109 | else | |
1110 | add_dir (argv[i]); | |
591e1ffb UD |
1111 | } |
1112 | ||
0cfbb8c6 UD |
1113 | set_hwcap (); |
1114 | ||
591e1ffb UD |
1115 | if (opt_chroot) |
1116 | { | |
f0189a54 UD |
1117 | /* Normalize the path a bit, we might need it for printing later. */ |
1118 | char *endp = strchr (opt_chroot, '\0'); | |
b4a555d6 | 1119 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
1120 | --endp; |
1121 | *endp = '\0'; | |
b4a555d6 UD |
1122 | if (endp == opt_chroot) |
1123 | opt_chroot = NULL; | |
f0189a54 | 1124 | |
b4a555d6 UD |
1125 | if (opt_chroot) |
1126 | { | |
1127 | /* It is faster to use chroot if we can. */ | |
1128 | if (!chroot (opt_chroot)) | |
1129 | { | |
1130 | if (chdir ("/")) | |
1131 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
1132 | opt_chroot = NULL; | |
1133 | } | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | if (cache_file == NULL) | |
1138 | { | |
1139 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
1140 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
1141 | } |
1142 | ||
b4a555d6 UD |
1143 | if (config_file == NULL) |
1144 | config_file = LD_SO_CONF; | |
1145 | ||
591e1ffb UD |
1146 | if (opt_print_cache) |
1147 | { | |
b4a555d6 UD |
1148 | if (opt_chroot) |
1149 | { | |
1150 | char *p = chroot_canon (opt_chroot, cache_file); | |
1151 | if (p == NULL) | |
1152 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1153 | cache_file); | |
1154 | cache_file = p; | |
1155 | } | |
591e1ffb | 1156 | print_cache (cache_file); |
b4a555d6 UD |
1157 | if (opt_chroot) |
1158 | free (cache_file); | |
591e1ffb UD |
1159 | exit (0); |
1160 | } | |
1161 | ||
b4a555d6 UD |
1162 | if (opt_chroot) |
1163 | { | |
1164 | /* Canonicalize the directory name of cache_file, not cache_file, | |
1165 | because we'll rename a temporary cache file to it. */ | |
1166 | char *p = strrchr (cache_file, '/'); | |
1167 | char *canon = chroot_canon (opt_chroot, | |
1168 | p ? (*p = '\0', cache_file) : "/"); | |
1169 | ||
1170 | if (canon == NULL) | |
1171 | { | |
1172 | error (EXIT_FAILURE, errno, | |
1173 | _("Can't open cache file directory %s\n"), | |
1174 | p ? cache_file : "/"); | |
1175 | } | |
1176 | ||
1177 | if (p) | |
1178 | ++p; | |
1179 | else | |
1180 | p = cache_file; | |
1181 | ||
1182 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
1183 | sprintf (cache_file, "%s/%s", canon, p); | |
1184 | free (canon); | |
1185 | } | |
1186 | ||
b85697f6 UD |
1187 | if (opt_manual_link) |
1188 | { | |
1189 | /* Link all given libraries manually. */ | |
1190 | int i; | |
1191 | ||
1192 | for (i = remaining; i < argc; ++i) | |
a986484f | 1193 | manual_link (argv[i]); |
b85697f6 UD |
1194 | |
1195 | exit (0); | |
1196 | } | |
45eca4d1 UD |
1197 | |
1198 | ||
591e1ffb UD |
1199 | if (opt_build_cache) |
1200 | init_cache (); | |
1201 | ||
1202 | if (!opt_only_cline) | |
1203 | { | |
8e115d80 | 1204 | parse_conf (config_file, true); |
334fcf2a | 1205 | |
591e1ffb | 1206 | /* Always add the standard search paths. */ |
bd89c0b5 | 1207 | add_system_dir (SLIBDIR); |
8ca91b36 | 1208 | if (strcmp (SLIBDIR, LIBDIR)) |
bd89c0b5 | 1209 | add_system_dir (LIBDIR); |
591e1ffb | 1210 | } |
45eca4d1 | 1211 | |
591e1ffb UD |
1212 | search_dirs (); |
1213 | ||
1214 | if (opt_build_cache) | |
1215 | save_cache (cache_file); | |
1216 | ||
1217 | return 0; | |
1218 | } |