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Commit | Line | Data |
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561470e0 | 1 | /* Copyright (C) 1999-2008, 2009, 2010 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 | ||
43bc8ac6 | 5 | This program is free software; you can redistribute it and/or modify |
2e2efe65 RM |
6 | it under the terms of the GNU General Public License as published |
7 | by the Free Software Foundation; version 2 of the License, or | |
8 | (at your option) any later version. | |
591e1ffb | 9 | |
43bc8ac6 | 10 | This program is distributed in the hope that it will be useful, |
591e1ffb | 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
43bc8ac6 UD |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | GNU General Public License for more details. | |
591e1ffb | 14 | |
43bc8ac6 UD |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software Foundation, | |
17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
591e1ffb | 18 | |
ee600e3f | 19 | #define PROCINFO_CLASS static |
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> |
11bf311e | 28 | #include <locale.h> |
f57ebe29 | 29 | #include <stdbool.h> |
591e1ffb | 30 | #include <stdio.h> |
c96873d7 | 31 | #include <stdio_ext.h> |
591e1ffb UD |
32 | #include <stdlib.h> |
33 | #include <string.h> | |
34 | #include <unistd.h> | |
35 | #include <sys/fcntl.h> | |
36 | #include <sys/mman.h> | |
37 | #include <sys/stat.h> | |
38 | #include <sys/types.h> | |
8e115d80 RM |
39 | #include <glob.h> |
40 | #include <libgen.h> | |
591e1ffb | 41 | |
8f480b4b RM |
42 | #include <ldconfig.h> |
43 | #include <dl-cache.h> | |
591e1ffb | 44 | |
8f480b4b | 45 | #include <dl-procinfo.h> |
591e1ffb | 46 | |
ab1d521d RM |
47 | #ifdef _DL_FIRST_PLATFORM |
48 | # define _DL_FIRST_EXTRA (_DL_FIRST_PLATFORM + _DL_PLATFORMS_COUNT) | |
49 | #else | |
50 | # define _DL_FIRST_EXTRA _DL_HWCAP_COUNT | |
51 | #endif | |
52 | ||
591e1ffb | 53 | #ifndef LD_SO_CONF |
8ca91b36 | 54 | # define LD_SO_CONF SYSCONFDIR "/ld.so.conf" |
591e1ffb UD |
55 | #endif |
56 | ||
57 | /* Get libc version number. */ | |
58 | #include <version.h> | |
59 | ||
60 | #define PACKAGE _libc_intl_domainname | |
61 | ||
591e1ffb UD |
62 | static const struct |
63 | { | |
64 | const char *name; | |
65 | int flag; | |
a986484f | 66 | } lib_types[] = |
591e1ffb UD |
67 | { |
68 | {"libc4", FLAG_LIBC4}, | |
69 | {"libc5", FLAG_ELF_LIBC5}, | |
70 | {"libc6", FLAG_ELF_LIBC6}, | |
71 | {"glibc2", FLAG_ELF_LIBC6} | |
45eca4d1 | 72 | }; |
591e1ffb UD |
73 | |
74 | ||
75 | /* List of directories to handle. */ | |
76 | struct dir_entry | |
77 | { | |
78 | char *path; | |
79 | int flag; | |
4ceae915 AJ |
80 | ino64_t ino; |
81 | dev_t dev; | |
591e1ffb UD |
82 | struct dir_entry *next; |
83 | }; | |
84 | ||
85 | /* The list is unsorted, contains no duplicates. Entries are added at | |
86 | the end. */ | |
87 | static struct dir_entry *dir_entries; | |
88 | ||
89 | /* Flags for different options. */ | |
90 | /* Print Cache. */ | |
c96873d7 | 91 | static int opt_print_cache; |
591e1ffb UD |
92 | |
93 | /* Be verbose. */ | |
c96873d7 | 94 | int opt_verbose; |
591e1ffb | 95 | |
45eca4d1 UD |
96 | /* Format to support. */ |
97 | /* 0: only libc5/glibc2; 1: both; 2: only glibc 2.2. */ | |
98 | int opt_format = 1; | |
99 | ||
591e1ffb UD |
100 | /* Build cache. */ |
101 | static int opt_build_cache = 1; | |
102 | ||
103 | /* Generate links. */ | |
104 | static int opt_link = 1; | |
105 | ||
106 | /* Only process directories specified on the command line. */ | |
c96873d7 | 107 | static int opt_only_cline; |
591e1ffb UD |
108 | |
109 | /* Path to root for chroot. */ | |
110 | static char *opt_chroot; | |
111 | ||
b85697f6 | 112 | /* Manually link given shared libraries. */ |
c96873d7 | 113 | static int opt_manual_link; |
b85697f6 | 114 | |
27d9ffda UD |
115 | /* Should we ignore an old auxiliary cache file? */ |
116 | static int opt_ignore_aux_cache; | |
117 | ||
591e1ffb | 118 | /* Cache file to use. */ |
b4a555d6 | 119 | static char *cache_file; |
591e1ffb UD |
120 | |
121 | /* Configuration file. */ | |
122 | static const char *config_file; | |
123 | ||
0cfbb8c6 UD |
124 | /* Mask to use for important hardware capabilities. */ |
125 | static unsigned long int hwcap_mask = HWCAP_IMPORTANT; | |
126 | ||
ab1d521d RM |
127 | /* Configuration-defined capabilities defined in kernel vDSOs. */ |
128 | static const char *hwcap_extra[64 - _DL_FIRST_EXTRA]; | |
129 | ||
591e1ffb UD |
130 | /* Name and version of program. */ |
131 | static void print_version (FILE *stream, struct argp_state *state); | |
132 | void (*argp_program_version_hook) (FILE *, struct argp_state *) | |
133 | = print_version; | |
134 | ||
cbbcaf23 UD |
135 | /* Function to print some extra text in the help message. */ |
136 | static char *more_help (int key, const char *text, void *input); | |
137 | ||
591e1ffb UD |
138 | /* Definitions of arguments for argp functions. */ |
139 | static const struct argp_option options[] = | |
140 | { | |
141 | { "print-cache", 'p', NULL, 0, N_("Print cache"), 0}, | |
142 | { "verbose", 'v', NULL, 0, N_("Generate verbose messages"), 0}, | |
143 | { NULL, 'N', NULL, 0, N_("Don't build cache"), 0}, | |
144 | { NULL, 'X', NULL, 0, N_("Don't generate links"), 0}, | |
7864c09b UD |
145 | { NULL, 'r', N_("ROOT"), 0, N_("Change to and use ROOT as root directory"), 0}, |
146 | { NULL, 'C', N_("CACHE"), 0, N_("Use CACHE as cache file"), 0}, | |
147 | { NULL, 'f', N_("CONF"), 0, N_("Use CONF as configuration file"), 0}, | |
591e1ffb | 148 | { NULL, 'n', NULL, 0, N_("Only process directories specified on the command line. Don't build cache."), 0}, |
b85697f6 | 149 | { NULL, 'l', NULL, 0, N_("Manually link individual libraries."), 0}, |
7864c09b | 150 | { "format", 'c', N_("FORMAT"), 0, N_("Format to use: new, old or compat (default)"), 0}, |
27d9ffda | 151 | { "ignore-aux-cache", 'i', NULL, 0, N_("Ignore auxiliary cache file"), 0}, |
591e1ffb UD |
152 | { NULL, 0, NULL, 0, NULL, 0 } |
153 | }; | |
154 | ||
11bf8ce1 UD |
155 | #define PROCINFO_CLASS static |
156 | #include <dl-procinfo.c> | |
157 | ||
591e1ffb UD |
158 | /* Short description of program. */ |
159 | static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings."); | |
160 | ||
161 | /* Prototype for option handler. */ | |
162 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
163 | ||
164 | /* Data structure to communicate with argp functions. */ | |
165 | static struct argp argp = | |
166 | { | |
cbbcaf23 | 167 | options, parse_opt, NULL, doc, NULL, more_help, NULL |
591e1ffb UD |
168 | }; |
169 | ||
a6c1c03a AJ |
170 | /* Check if string corresponds to an important hardware capability or |
171 | a platform. */ | |
45eca4d1 | 172 | static int |
a6c1c03a | 173 | is_hwcap_platform (const char *name) |
45eca4d1 UD |
174 | { |
175 | int hwcap_idx = _dl_string_hwcap (name); | |
8ca91b36 | 176 | |
0cfbb8c6 | 177 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & hwcap_mask)) |
45eca4d1 | 178 | return 1; |
a6c1c03a AJ |
179 | |
180 | hwcap_idx = _dl_string_platform (name); | |
181 | if (hwcap_idx != -1) | |
182 | return 1; | |
183 | ||
ab1d521d RM |
184 | for (hwcap_idx = _DL_FIRST_EXTRA; hwcap_idx < 64; ++hwcap_idx) |
185 | if (hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA] != NULL | |
186 | && !strcmp (name, hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA])) | |
187 | return 1; | |
676fde70 | 188 | |
45eca4d1 UD |
189 | return 0; |
190 | } | |
191 | ||
a6c1c03a AJ |
192 | /* Get hwcap (including platform) encoding of path. */ |
193 | static uint64_t | |
45eca4d1 UD |
194 | path_hwcap (const char *path) |
195 | { | |
196 | char *str = xstrdup (path); | |
197 | char *ptr; | |
a6c1c03a AJ |
198 | uint64_t hwcap = 0; |
199 | uint64_t h; | |
45eca4d1 UD |
200 | |
201 | size_t len; | |
202 | ||
203 | len = strlen (str); | |
204 | if (str[len] == '/') | |
205 | str[len] = '\0'; | |
206 | ||
207 | /* Search pathname from the end and check for hwcap strings. */ | |
208 | for (;;) | |
209 | { | |
210 | ptr = strrchr (str, '/'); | |
211 | ||
212 | if (ptr == NULL) | |
213 | break; | |
214 | ||
a6c1c03a | 215 | h = _dl_string_hwcap (ptr + 1); |
45eca4d1 | 216 | |
59553897 UD |
217 | if (h == (uint64_t) -1) |
218 | { | |
219 | h = _dl_string_platform (ptr + 1); | |
220 | if (h == (uint64_t) -1) | |
676fde70 | 221 | { |
ab1d521d RM |
222 | for (h = _DL_FIRST_EXTRA; h < 64; ++h) |
223 | if (hwcap_extra[h - _DL_FIRST_EXTRA] != NULL | |
224 | && !strcmp (ptr + 1, hwcap_extra[h - _DL_FIRST_EXTRA])) | |
225 | break; | |
226 | if (h == 64) | |
676fde70 UD |
227 | break; |
228 | } | |
59553897 | 229 | } |
a6c1c03a | 230 | hwcap += 1ULL << h; |
591e1ffb | 231 | |
45eca4d1 UD |
232 | /* Search the next part of the path. */ |
233 | *ptr = '\0'; | |
234 | } | |
235 | ||
236 | free (str); | |
237 | return hwcap; | |
238 | } | |
591e1ffb UD |
239 | |
240 | /* Handle program arguments. */ | |
241 | static error_t | |
242 | parse_opt (int key, char *arg, struct argp_state *state) | |
243 | { | |
244 | switch (key) | |
245 | { | |
246 | case 'C': | |
247 | cache_file = arg; | |
27d9ffda UD |
248 | /* Ignore auxiliary cache since we use non-standard cache. */ |
249 | opt_ignore_aux_cache = 1; | |
591e1ffb UD |
250 | break; |
251 | case 'f': | |
252 | config_file = arg; | |
253 | break; | |
27d9ffda UD |
254 | case 'i': |
255 | opt_ignore_aux_cache = 1; | |
256 | break; | |
b85697f6 UD |
257 | case 'l': |
258 | opt_manual_link = 1; | |
259 | break; | |
591e1ffb UD |
260 | case 'N': |
261 | opt_build_cache = 0; | |
262 | break; | |
263 | case 'n': | |
264 | opt_build_cache = 0; | |
265 | opt_only_cline = 1; | |
266 | break; | |
267 | case 'p': | |
268 | opt_print_cache = 1; | |
269 | break; | |
270 | case 'r': | |
271 | opt_chroot = arg; | |
272 | break; | |
273 | case 'v': | |
274 | opt_verbose = 1; | |
275 | break; | |
276 | case 'X': | |
277 | opt_link = 0; | |
278 | break; | |
45eca4d1 UD |
279 | case 'c': |
280 | if (strcmp (arg, "old") == 0) | |
281 | opt_format = 0; | |
282 | else if (strcmp (arg, "compat") == 0) | |
283 | opt_format = 1; | |
284 | else if (strcmp (arg, "new") == 0) | |
285 | opt_format = 2; | |
286 | break; | |
591e1ffb UD |
287 | default: |
288 | return ARGP_ERR_UNKNOWN; | |
289 | } | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
cbbcaf23 UD |
294 | /* Print bug-reporting information in the help message. */ |
295 | static char * | |
296 | more_help (int key, const char *text, void *input) | |
297 | { | |
298 | switch (key) | |
299 | { | |
300 | case ARGP_KEY_HELP_EXTRA: | |
301 | /* We print some extra information. */ | |
302 | return strdup (gettext ("\ | |
303 | For bug reporting instructions, please see:\n\ | |
304 | <http://www.gnu.org/software/libc/bugs.html>.\n")); | |
305 | default: | |
306 | break; | |
307 | } | |
308 | return (char *) text; | |
309 | } | |
310 | ||
591e1ffb UD |
311 | /* Print the version information. */ |
312 | static void | |
313 | print_version (FILE *stream, struct argp_state *state) | |
314 | { | |
315 | fprintf (stream, "ldconfig (GNU %s) %s\n", PACKAGE, VERSION); | |
316 | fprintf (stream, gettext ("\ | |
317 | Copyright (C) %s Free Software Foundation, Inc.\n\ | |
318 | This is free software; see the source for copying conditions. There is NO\n\ | |
319 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ | |
561470e0 | 320 | "), "2010"); |
591e1ffb UD |
321 | fprintf (stream, gettext ("Written by %s.\n"), |
322 | "Andreas Jaeger"); | |
323 | } | |
324 | ||
a8fd59b0 AJ |
325 | /* Add a single directory entry. */ |
326 | static void | |
327 | add_single_dir (struct dir_entry *entry, int verbose) | |
328 | { | |
329 | struct dir_entry *ptr, *prev; | |
330 | ||
331 | ptr = dir_entries; | |
332 | prev = ptr; | |
333 | while (ptr != NULL) | |
334 | { | |
335 | /* Check for duplicates. */ | |
4ceae915 | 336 | if (ptr->ino == entry->ino && ptr->dev == entry->dev) |
a8fd59b0 AJ |
337 | { |
338 | if (opt_verbose && verbose) | |
339 | error (0, 0, _("Path `%s' given more than once"), entry->path); | |
340 | /* Use the newer information. */ | |
341 | ptr->flag = entry->flag; | |
4ceae915 | 342 | free (entry->path); |
a8fd59b0 AJ |
343 | free (entry); |
344 | break; | |
345 | } | |
346 | prev = ptr; | |
347 | ptr = ptr->next; | |
348 | } | |
349 | /* Is this the first entry? */ | |
350 | if (ptr == NULL && dir_entries == NULL) | |
351 | dir_entries = entry; | |
352 | else if (ptr == NULL) | |
353 | prev->next = entry; | |
354 | } | |
355 | ||
591e1ffb UD |
356 | /* Add one directory to the list of directories to process. */ |
357 | static void | |
358 | add_dir (const char *line) | |
359 | { | |
591e1ffb | 360 | unsigned int i; |
539842a4 | 361 | struct dir_entry *entry = xmalloc (sizeof (struct dir_entry)); |
591e1ffb | 362 | entry->next = NULL; |
45eca4d1 | 363 | |
591e1ffb UD |
364 | /* Search for an '=' sign. */ |
365 | entry->path = xstrdup (line); | |
539842a4 | 366 | char *equal_sign = strchr (entry->path, '='); |
591e1ffb UD |
367 | if (equal_sign) |
368 | { | |
369 | *equal_sign = '\0'; | |
370 | ++equal_sign; | |
371 | entry->flag = FLAG_ANY; | |
a986484f | 372 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i) |
591e1ffb UD |
373 | if (strcmp (equal_sign, lib_types[i].name) == 0) |
374 | { | |
375 | entry->flag = lib_types[i].flag; | |
376 | break; | |
377 | } | |
378 | if (entry->flag == FLAG_ANY) | |
379 | error (0, 0, _("%s is not a known library type"), equal_sign); | |
380 | } | |
381 | else | |
382 | { | |
383 | entry->flag = FLAG_ANY; | |
384 | } | |
385 | ||
69acbe9f UD |
386 | /* Canonify path: for now only remove leading and trailing |
387 | whitespace and the trailing slashes slashes. */ | |
591e1ffb | 388 | i = strlen (entry->path) - 1; |
69acbe9f UD |
389 | |
390 | while (isspace (entry->path[i]) && i > 0) | |
391 | entry->path[i--] = '\0'; | |
392 | ||
591e1ffb | 393 | while (entry->path[i] == '/' && i > 0) |
69acbe9f | 394 | entry->path[i--] = '\0'; |
45eca4d1 | 395 | |
539842a4 UD |
396 | char *path = entry->path; |
397 | if (opt_chroot) | |
398 | path = chroot_canon (opt_chroot, path); | |
399 | ||
400 | struct stat64 stat_buf; | |
401 | if (path == NULL || stat64 (path, &stat_buf)) | |
4ceae915 | 402 | { |
8645ad47 AJ |
403 | if (opt_verbose) |
404 | error (0, errno, _("Can't stat %s"), entry->path); | |
4ceae915 AJ |
405 | free (entry->path); |
406 | free (entry); | |
4ceae915 | 407 | } |
539842a4 UD |
408 | else |
409 | { | |
410 | entry->ino = stat_buf.st_ino; | |
411 | entry->dev = stat_buf.st_dev; | |
4ceae915 | 412 | |
539842a4 UD |
413 | add_single_dir (entry, 1); |
414 | } | |
4ceae915 | 415 | |
539842a4 UD |
416 | if (opt_chroot) |
417 | free (path); | |
591e1ffb UD |
418 | } |
419 | ||
420 | ||
b4a555d6 UD |
421 | static int |
422 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
423 | { | |
424 | int ret; | |
425 | char *canon_path; | |
426 | ||
427 | if (!opt_chroot) | |
428 | return stat64 (real_path, st); | |
429 | ||
430 | ret = lstat64 (real_path, st); | |
431 | if (ret || !S_ISLNK (st->st_mode)) | |
432 | return ret; | |
433 | ||
434 | canon_path = chroot_canon (opt_chroot, path); | |
435 | if (canon_path == NULL) | |
436 | return -1; | |
437 | ||
438 | ret = stat64 (canon_path, st); | |
439 | free (canon_path); | |
440 | return ret; | |
441 | } | |
442 | ||
591e1ffb UD |
443 | /* Create a symbolic link from soname to libname in directory path. */ |
444 | static void | |
b4a555d6 UD |
445 | create_links (const char *real_path, const char *path, const char *libname, |
446 | const char *soname) | |
591e1ffb | 447 | { |
7b0d235c | 448 | char *full_libname, *full_soname; |
b4a555d6 UD |
449 | char *real_full_libname, *real_full_soname; |
450 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
451 | int do_link = 1; |
452 | int do_remove = 1; | |
453 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 454 | |
591e1ffb | 455 | /* Get complete path. */ |
7b0d235c | 456 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 457 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
458 | sprintf (full_libname, "%s/%s", path, libname); |
459 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
460 | if (opt_chroot) |
461 | { | |
462 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 463 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
464 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
465 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
466 | } | |
467 | else | |
468 | { | |
469 | real_full_libname = full_libname; | |
470 | real_full_soname = full_soname; | |
471 | } | |
591e1ffb UD |
472 | |
473 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 474 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 475 | { |
b4a555d6 | 476 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
477 | { |
478 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
479 | return; | |
480 | } | |
481 | if (stat_lib.st_dev == stat_so.st_dev | |
482 | && stat_lib.st_ino == stat_so.st_ino) | |
483 | /* Link is already correct. */ | |
484 | do_link = 0; | |
b4a555d6 | 485 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
486 | && !S_ISLNK (lstat_so.st_mode)) |
487 | { | |
488 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
489 | do_link = 0; | |
490 | do_remove = 0; | |
491 | } | |
492 | } | |
b4a555d6 | 493 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
494 | || !S_ISLNK (lstat_so.st_mode)) |
495 | /* Unless it is a stale symlink, there is no need to remove. */ | |
496 | do_remove = 0; | |
497 | ||
498 | if (opt_verbose) | |
499 | printf ("\t%s -> %s", soname, libname); | |
500 | ||
501 | if (do_link && opt_link) | |
502 | { | |
503 | /* Remove old link. */ | |
504 | if (do_remove) | |
b4a555d6 | 505 | if (unlink (real_full_soname)) |
591e1ffb UD |
506 | { |
507 | error (0, 0, _("Can't unlink %s"), full_soname); | |
508 | do_link = 0; | |
509 | } | |
510 | /* Create symbolic link. */ | |
b4a555d6 | 511 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
512 | { |
513 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
514 | do_link = 0; | |
515 | } | |
516 | if (opt_verbose) | |
517 | { | |
518 | if (do_link) | |
519 | fputs (_(" (changed)\n"), stdout); | |
520 | else | |
521 | fputs (_(" (SKIPPED)\n"), stdout); | |
522 | } | |
523 | } | |
524 | else if (opt_verbose) | |
525 | fputs ("\n", stdout); | |
526 | } | |
527 | ||
b85697f6 UD |
528 | /* Manually link the given library. */ |
529 | static void | |
530 | manual_link (char *library) | |
531 | { | |
532 | char *path; | |
b4a555d6 UD |
533 | char *real_path; |
534 | char *real_library; | |
b85697f6 UD |
535 | char *libname; |
536 | char *soname; | |
b4a555d6 | 537 | struct stat64 stat_buf; |
b85697f6 | 538 | int flag; |
a986484f | 539 | unsigned int osversion; |
b85697f6 UD |
540 | |
541 | /* Prepare arguments for create_links call. Split library name in | |
542 | directory and filename first. Since path is allocated, we've got | |
543 | to be careful to free at the end. */ | |
544 | path = xstrdup (library); | |
545 | libname = strrchr (path, '/'); | |
546 | ||
547 | if (libname) | |
548 | { | |
549 | /* Successfully split names. Check if path is just "/" to avoid | |
27d9ffda | 550 | an empty path. */ |
b85697f6 UD |
551 | if (libname == path) |
552 | { | |
553 | libname = library + 1; | |
554 | path = xrealloc (path, 2); | |
555 | strcpy (path, "/"); | |
556 | } | |
557 | else | |
558 | { | |
559 | *libname = '\0'; | |
560 | ++libname; | |
561 | } | |
562 | } | |
563 | else | |
564 | { | |
565 | /* There's no path, construct one. */ | |
566 | libname = library; | |
567 | path = xrealloc (path, 2); | |
568 | strcpy (path, "."); | |
569 | } | |
570 | ||
b4a555d6 UD |
571 | if (opt_chroot) |
572 | { | |
573 | real_path = chroot_canon (opt_chroot, path); | |
574 | if (real_path == NULL) | |
575 | { | |
576 | error (0, errno, _("Can't find %s"), path); | |
577 | free (path); | |
578 | return; | |
579 | } | |
580 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
581 | sprintf (real_library, "%s/%s", real_path, libname); | |
582 | } | |
583 | else | |
584 | { | |
585 | real_path = path; | |
586 | real_library = library; | |
587 | } | |
588 | ||
b85697f6 | 589 | /* Do some sanity checks first. */ |
b4a555d6 | 590 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 | 591 | { |
11bf311e | 592 | error (0, errno, _("Cannot lstat %s"), library); |
b85697f6 UD |
593 | free (path); |
594 | return; | |
595 | } | |
596 | /* We don't want links here! */ | |
597 | else if (!S_ISREG (stat_buf.st_mode)) | |
598 | { | |
599 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
600 | library); | |
601 | free (path); | |
602 | return; | |
603 | } | |
27d9ffda | 604 | |
a986484f | 605 | if (process_file (real_library, library, libname, &flag, &osversion, |
27d9ffda | 606 | &soname, 0, &stat_buf)) |
b85697f6 UD |
607 | { |
608 | error (0, 0, _("No link created since soname could not be found for %s"), | |
609 | library); | |
610 | free (path); | |
611 | return; | |
612 | } | |
27d9ffda UD |
613 | if (soname == NULL) |
614 | soname = implicit_soname (libname, flag); | |
b4a555d6 | 615 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
616 | free (soname); |
617 | free (path); | |
618 | } | |
619 | ||
620 | ||
591e1ffb UD |
621 | /* Read a whole directory and search for libraries. |
622 | The purpose is two-fold: | |
623 | - search for libraries which will be added to the cache | |
624 | - create symbolic links to the soname for each library | |
625 | ||
626 | This has to be done separatly for each directory. | |
45eca4d1 | 627 | |
591e1ffb UD |
628 | To keep track of which libraries to add to the cache and which |
629 | links to create, we save a list of all libraries. | |
630 | ||
631 | The algorithm is basically: | |
632 | for all libraries in the directory do | |
633 | get soname of library | |
634 | if soname is already in list | |
635 | if new library is newer, replace entry | |
636 | otherwise ignore this library | |
637 | otherwise add library to list | |
45eca4d1 | 638 | |
591e1ffb UD |
639 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
640 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
641 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
642 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
643 | libxy.so.1.1. */ | |
644 | ||
645 | /* Information for one library. */ | |
45eca4d1 | 646 | struct dlib_entry |
591e1ffb UD |
647 | { |
648 | char *name; | |
649 | char *soname; | |
650 | int flag; | |
651 | int is_link; | |
a986484f | 652 | unsigned int osversion; |
591e1ffb UD |
653 | struct dlib_entry *next; |
654 | }; | |
655 | ||
656 | ||
657 | static void | |
658 | search_dir (const struct dir_entry *entry) | |
659 | { | |
a6c1c03a | 660 | uint64_t hwcap = path_hwcap (entry->path); |
591e1ffb | 661 | if (opt_verbose) |
45eca4d1 UD |
662 | { |
663 | if (hwcap != 0) | |
ab1d521d | 664 | printf ("%s: (hwcap: %#.16" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
665 | else |
666 | printf ("%s:\n", entry->path); | |
667 | } | |
668 | ||
27d9ffda UD |
669 | char *dir_name; |
670 | char *real_file_name; | |
671 | size_t real_file_name_len; | |
672 | size_t file_name_len = PATH_MAX; | |
673 | char *file_name = alloca (file_name_len); | |
b4a555d6 UD |
674 | if (opt_chroot) |
675 | { | |
676 | dir_name = chroot_canon (opt_chroot, entry->path); | |
677 | real_file_name_len = PATH_MAX; | |
678 | real_file_name = alloca (real_file_name_len); | |
679 | } | |
680 | else | |
681 | { | |
682 | dir_name = entry->path; | |
683 | real_file_name_len = 0; | |
684 | real_file_name = file_name; | |
685 | } | |
686 | ||
27d9ffda | 687 | DIR *dir; |
b4a555d6 | 688 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) |
591e1ffb UD |
689 | { |
690 | if (opt_verbose) | |
691 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
692 | if (opt_chroot && dir_name) |
693 | free (dir_name); | |
591e1ffb UD |
694 | return; |
695 | } | |
45eca4d1 | 696 | |
27d9ffda UD |
697 | struct dirent64 *direntry; |
698 | struct dlib_entry *dlibs = NULL; | |
2b510e91 | 699 | while ((direntry = readdir64 (dir)) != NULL) |
591e1ffb UD |
700 | { |
701 | int flag; | |
702 | #ifdef _DIRENT_HAVE_D_TYPE | |
703 | /* We only look at links and regular files. */ | |
704 | if (direntry->d_type != DT_UNKNOWN | |
705 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
706 | && direntry->d_type != DT_REG |
707 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
708 | continue; |
709 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
710 | /* Does this file look like a shared library or is it a hwcap |
711 | subdirectory? The dynamic linker is also considered as | |
712 | shared library. */ | |
713 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
714 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
715 | || strstr (direntry->d_name, ".so") == NULL) | |
95ce33a5 UD |
716 | && ( |
717 | #ifdef _DIRENT_HAVE_D_TYPE | |
718 | direntry->d_type == DT_REG || | |
719 | #endif | |
720 | !is_hwcap_platform (direntry->d_name))) | |
591e1ffb | 721 | continue; |
27d9ffda UD |
722 | |
723 | size_t len = strlen (direntry->d_name); | |
3858bf28 RM |
724 | /* Skip temporary files created by the prelink program. Files with |
725 | names like these are never really DSOs we want to look at. */ | |
726 | if (len >= sizeof (".#prelink#") - 1) | |
727 | { | |
728 | if (strcmp (direntry->d_name + len - sizeof (".#prelink#") + 1, | |
729 | ".#prelink#") == 0) | |
730 | continue; | |
731 | if (len >= sizeof (".#prelink#.XXXXXX") - 1 | |
732 | && memcmp (direntry->d_name + len - sizeof (".#prelink#.XXXXXX") | |
733 | + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0) | |
734 | continue; | |
735 | } | |
30a3aa75 | 736 | len += strlen (entry->path) + 2; |
7b0d235c | 737 | if (len > file_name_len) |
591e1ffb | 738 | { |
30a3aa75 | 739 | file_name_len = len; |
7b0d235c | 740 | file_name = alloca (file_name_len); |
b4a555d6 UD |
741 | if (!opt_chroot) |
742 | real_file_name = file_name; | |
743 | } | |
744 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
745 | if (opt_chroot) | |
746 | { | |
30a3aa75 | 747 | len = strlen (dir_name) + strlen (direntry->d_name) + 2; |
b4a555d6 UD |
748 | if (len > real_file_name_len) |
749 | { | |
30a3aa75 | 750 | real_file_name_len = len; |
b4a555d6 UD |
751 | real_file_name = alloca (real_file_name_len); |
752 | } | |
753 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 754 | } |
27d9ffda UD |
755 | |
756 | struct stat64 lstat_buf; | |
7c3002f0 | 757 | #ifdef _DIRENT_HAVE_D_TYPE |
27d9ffda | 758 | /* We optimize and try to do the lstat call only if needed. */ |
7c3002f0 | 759 | if (direntry->d_type != DT_UNKNOWN) |
4ceae915 | 760 | lstat_buf.st_mode = DTTOIF (direntry->d_type); |
7c3002f0 UD |
761 | else |
762 | #endif | |
95ce33a5 | 763 | if (__builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) |
7c3002f0 | 764 | { |
95ce33a5 | 765 | error (0, errno, _("Cannot lstat %s"), file_name); |
7c3002f0 UD |
766 | continue; |
767 | } | |
768 | ||
27d9ffda UD |
769 | struct stat64 stat_buf; |
770 | int is_dir; | |
771 | int is_link = S_ISLNK (lstat_buf.st_mode); | |
4ceae915 | 772 | if (is_link) |
27d9ffda | 773 | { |
4ceae915 AJ |
774 | /* In case of symlink, we check if the symlink refers to |
775 | a directory. */ | |
7dee2660 UD |
776 | char *target_name = real_file_name; |
777 | if (opt_chroot) | |
778 | { | |
779 | target_name = chroot_canon (opt_chroot, file_name); | |
780 | if (target_name == NULL) | |
781 | { | |
782 | if (strstr (file_name, ".so") == NULL) | |
783 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
784 | continue; | |
785 | } | |
786 | } | |
787 | if (__builtin_expect (stat64 (target_name, &stat_buf), 0)) | |
4ceae915 | 788 | { |
8645ad47 | 789 | if (opt_verbose) |
95ce33a5 | 790 | error (0, errno, _("Cannot stat %s"), file_name); |
647eb037 UD |
791 | |
792 | /* Remove stale symlinks. */ | |
793 | if (strstr (direntry->d_name, ".so.")) | |
794 | unlink (real_file_name); | |
4ceae915 AJ |
795 | continue; |
796 | } | |
797 | is_dir = S_ISDIR (stat_buf.st_mode); | |
27d9ffda UD |
798 | |
799 | /* lstat_buf is later stored, update contents. */ | |
800 | lstat_buf.st_dev = stat_buf.st_dev; | |
801 | lstat_buf.st_ino = stat_buf.st_ino; | |
802 | lstat_buf.st_size = stat_buf.st_size; | |
803 | lstat_buf.st_ctime = stat_buf.st_ctime; | |
4ceae915 AJ |
804 | } |
805 | else | |
806 | is_dir = S_ISDIR (lstat_buf.st_mode); | |
807 | ||
808 | if (is_dir && is_hwcap_platform (direntry->d_name)) | |
45eca4d1 | 809 | { |
a8fd59b0 AJ |
810 | /* Handle subdirectory later. */ |
811 | struct dir_entry *new_entry; | |
812 | ||
813 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 814 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
815 | new_entry->flag = entry->flag; |
816 | new_entry->next = NULL; | |
27d9ffda UD |
817 | #ifdef _DIRENT_HAVE_D_TYPE |
818 | /* We have filled in lstat only #ifndef | |
819 | _DIRENT_HAVE_D_TYPE. Fill it in if needed. */ | |
820 | if (!is_link | |
821 | && direntry->d_type != DT_UNKNOWN | |
822 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
4ceae915 | 823 | { |
27d9ffda UD |
824 | error (0, errno, _("Cannot lstat %s"), file_name); |
825 | free (new_entry->path); | |
826 | free (new_entry); | |
827 | continue; | |
4ceae915 | 828 | } |
95ce33a5 | 829 | #endif |
27d9ffda UD |
830 | new_entry->ino = lstat_buf.st_ino; |
831 | new_entry->dev = lstat_buf.st_dev; | |
a8fd59b0 | 832 | add_single_dir (new_entry, 0); |
45eca4d1 UD |
833 | continue; |
834 | } | |
0f843f89 | 835 | else if (!S_ISREG (lstat_buf.st_mode) && !is_link) |
591e1ffb UD |
836 | continue; |
837 | ||
27d9ffda | 838 | char *real_name; |
b4a555d6 UD |
839 | if (opt_chroot && is_link) |
840 | { | |
841 | real_name = chroot_canon (opt_chroot, file_name); | |
842 | if (real_name == NULL) | |
843 | { | |
844 | if (strstr (file_name, ".so") == NULL) | |
845 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
846 | continue; | |
847 | } | |
848 | } | |
849 | else | |
850 | real_name = real_file_name; | |
591e1ffb | 851 | |
27d9ffda UD |
852 | #ifdef _DIRENT_HAVE_D_TYPE |
853 | /* Call lstat64 if not done yet. */ | |
854 | if (!is_link | |
855 | && direntry->d_type != DT_UNKNOWN | |
856 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
b4a555d6 | 857 | { |
27d9ffda | 858 | error (0, errno, _("Cannot lstat %s"), file_name); |
b4a555d6 UD |
859 | continue; |
860 | } | |
27d9ffda UD |
861 | #endif |
862 | ||
863 | /* First search whether the auxiliary cache contains this | |
864 | library already and it's not changed. */ | |
865 | char *soname; | |
866 | unsigned int osversion; | |
867 | if (!search_aux_cache (&lstat_buf, &flag, &osversion, &soname)) | |
868 | { | |
869 | if (process_file (real_name, file_name, direntry->d_name, &flag, | |
870 | &osversion, &soname, is_link, &lstat_buf)) | |
871 | { | |
872 | if (real_name != real_file_name) | |
873 | free (real_name); | |
874 | continue; | |
875 | } | |
876 | else if (opt_build_cache) | |
877 | add_to_aux_cache (&lstat_buf, flag, osversion, soname); | |
878 | } | |
b4a555d6 | 879 | |
27d9ffda UD |
880 | if (soname == NULL) |
881 | soname = implicit_soname (direntry->d_name, flag); | |
82d8607d UD |
882 | |
883 | /* A link may just point to itself. */ | |
591e1ffb UD |
884 | if (is_link) |
885 | { | |
82d8607d UD |
886 | /* If the path the link points to isn't its soname and it is not |
887 | .so symlink for ld(1) only, we treat it as a normal file. */ | |
2fe98a4a | 888 | const char *real_base_name = basename (real_file_name); |
82d8607d UD |
889 | |
890 | if (strcmp (real_base_name, soname) != 0) | |
891 | { | |
892 | len = strlen (real_base_name); | |
893 | if (len < strlen (".so") | |
894 | || strcmp (real_base_name + len - strlen (".so"), ".so") != 0 | |
895 | || strncmp (real_base_name, soname, len) != 0) | |
896 | is_link = 0; | |
897 | } | |
27d9ffda | 898 | } |
45eca4d1 | 899 | |
395412a0 UD |
900 | if (real_name != real_file_name) |
901 | free (real_name); | |
902 | ||
82d8607d UD |
903 | if (is_link) |
904 | { | |
905 | free (soname); | |
906 | soname = xstrdup (direntry->d_name); | |
907 | } | |
908 | ||
591e1ffb UD |
909 | if (flag == FLAG_ELF |
910 | && (entry->flag == FLAG_ELF_LIBC5 | |
911 | || entry->flag == FLAG_ELF_LIBC6)) | |
912 | flag = entry->flag; | |
27d9ffda | 913 | |
591e1ffb UD |
914 | /* Some sanity checks to print warnings. */ |
915 | if (opt_verbose) | |
916 | { | |
917 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
918 | && entry->flag != FLAG_ANY) | |
7b0d235c | 919 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
920 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
921 | && entry->flag != FLAG_ANY) | |
7b0d235c | 922 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
923 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
924 | && entry->flag != FLAG_ANY) | |
7b0d235c | 925 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 926 | } |
45eca4d1 | 927 | |
591e1ffb | 928 | /* Add library to list. */ |
27d9ffda | 929 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
930 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
931 | { | |
932 | /* Is soname already in list? */ | |
933 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
934 | { | |
935 | /* Prefer a file to a link, otherwise check which one | |
936 | is newer. */ | |
937 | if ((!is_link && dlib_ptr->is_link) | |
938 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 939 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
940 | { |
941 | /* It's newer - add it. */ | |
942 | /* Flag should be the same - sanity check. */ | |
943 | if (dlib_ptr->flag != flag) | |
944 | { | |
945 | if (dlib_ptr->flag == FLAG_ELF | |
946 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
947 | dlib_ptr->flag = flag; | |
948 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
949 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
950 | && flag == FLAG_ELF) | |
951 | dlib_ptr->flag = flag; | |
952 | else | |
953 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
27d9ffda UD |
954 | dlib_ptr->name, direntry->d_name, |
955 | entry->path); | |
591e1ffb UD |
956 | } |
957 | free (dlib_ptr->name); | |
958 | dlib_ptr->name = xstrdup (direntry->d_name); | |
959 | dlib_ptr->is_link = is_link; | |
27d9ffda | 960 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
961 | } |
962 | /* Don't add this library, abort loop. */ | |
963 | /* Also free soname, since it's dynamically allocated. */ | |
964 | free (soname); | |
965 | break; | |
966 | } | |
967 | } | |
968 | /* Add the library if it's not already in. */ | |
969 | if (dlib_ptr == NULL) | |
970 | { | |
971 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
972 | dlib_ptr->name = xstrdup (direntry->d_name); | |
591e1ffb | 973 | dlib_ptr->soname = soname; |
27d9ffda | 974 | dlib_ptr->flag = flag; |
591e1ffb | 975 | dlib_ptr->is_link = is_link; |
27d9ffda | 976 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
977 | /* Add at head of list. */ |
978 | dlib_ptr->next = dlibs; | |
979 | dlibs = dlib_ptr; | |
980 | } | |
981 | } | |
982 | ||
983 | closedir (dir); | |
984 | ||
985 | /* Now dlibs contains a list of all libs - add those to the cache | |
986 | and created all symbolic links. */ | |
27d9ffda | 987 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
988 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
989 | { | |
990 | /* Don't create links to links. */ | |
991 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
992 | create_links (dir_name, entry->path, dlib_ptr->name, |
993 | dlib_ptr->soname); | |
591e1ffb | 994 | if (opt_build_cache) |
a986484f UD |
995 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
996 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
997 | } |
998 | ||
999 | /* Free all resources. */ | |
45eca4d1 | 1000 | while (dlibs) |
591e1ffb UD |
1001 | { |
1002 | dlib_ptr = dlibs; | |
1003 | free (dlib_ptr->soname); | |
1004 | free (dlib_ptr->name); | |
1005 | dlibs = dlibs->next; | |
1006 | free (dlib_ptr); | |
1007 | } | |
b4a555d6 UD |
1008 | |
1009 | if (opt_chroot && dir_name) | |
1010 | free (dir_name); | |
591e1ffb UD |
1011 | } |
1012 | ||
1013 | /* Search through all libraries. */ | |
1014 | static void | |
1015 | search_dirs (void) | |
1016 | { | |
1017 | struct dir_entry *entry; | |
1018 | ||
1019 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
1020 | search_dir (entry); | |
1021 | ||
1022 | /* Free all allocated memory. */ | |
1023 | while (dir_entries) | |
1024 | { | |
1025 | entry = dir_entries; | |
1026 | dir_entries = dir_entries->next; | |
1027 | free (entry->path); | |
1028 | free (entry); | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | ||
8e115d80 | 1033 | static void parse_conf_include (const char *config_file, unsigned int lineno, |
a334319f | 1034 | bool do_chroot, const char *pattern); |
8e115d80 | 1035 | |
591e1ffb UD |
1036 | /* Parse configuration file. */ |
1037 | static void | |
a334319f | 1038 | parse_conf (const char *filename, bool do_chroot) |
591e1ffb | 1039 | { |
b4a555d6 | 1040 | FILE *file = NULL; |
591e1ffb | 1041 | char *line = NULL; |
b4a555d6 | 1042 | const char *canon; |
591e1ffb | 1043 | size_t len = 0; |
8e115d80 | 1044 | unsigned int lineno; |
45eca4d1 | 1045 | |
8e115d80 | 1046 | if (do_chroot && opt_chroot) |
b4a555d6 UD |
1047 | { |
1048 | canon = chroot_canon (opt_chroot, filename); | |
1049 | if (canon) | |
1050 | file = fopen (canon, "r"); | |
1051 | else | |
1052 | canon = filename; | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | canon = filename; | |
1057 | file = fopen (filename, "r"); | |
1058 | } | |
591e1ffb UD |
1059 | |
1060 | if (file == NULL) | |
1061 | { | |
b4a555d6 UD |
1062 | error (0, errno, _("Can't open configuration file %s"), canon); |
1063 | if (canon != filename) | |
1064 | free ((char *) canon); | |
591e1ffb UD |
1065 | return; |
1066 | } | |
1067 | ||
c96873d7 UD |
1068 | /* No threads use this stream. */ |
1069 | __fsetlocking (file, FSETLOCKING_BYCALLER); | |
1070 | ||
b4a555d6 UD |
1071 | if (canon != filename) |
1072 | free ((char *) canon); | |
1073 | ||
8e115d80 | 1074 | lineno = 0; |
591e1ffb UD |
1075 | do |
1076 | { | |
1077 | ssize_t n = getline (&line, &len, file); | |
1078 | if (n < 0) | |
1079 | break; | |
1080 | ||
8e115d80 | 1081 | ++lineno; |
591e1ffb UD |
1082 | if (line[n - 1] == '\n') |
1083 | line[n - 1] = '\0'; | |
1084 | ||
1085 | /* Because the file format does not know any form of quoting we | |
1086 | can search forward for the next '#' character and if found | |
1087 | make it terminating the line. */ | |
1088 | *strchrnul (line, '#') = '\0'; | |
1089 | ||
69acbe9f UD |
1090 | /* Remove leading whitespace. NUL is no whitespace character. */ |
1091 | char *cp = line; | |
1092 | while (isspace (*cp)) | |
1093 | ++cp; | |
1094 | ||
591e1ffb | 1095 | /* If the line is blank it is ignored. */ |
69acbe9f | 1096 | if (cp[0] == '\0') |
591e1ffb UD |
1097 | continue; |
1098 | ||
8e115d80 RM |
1099 | if (!strncmp (cp, "include", 7) && isblank (cp[7])) |
1100 | { | |
1101 | char *dir; | |
1102 | cp += 8; | |
1103 | while ((dir = strsep (&cp, " \t")) != NULL) | |
1104 | if (dir[0] != '\0') | |
a334319f | 1105 | parse_conf_include (filename, lineno, do_chroot, dir); |
8e115d80 | 1106 | } |
ab1d521d RM |
1107 | else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5])) |
1108 | { | |
1109 | cp += 6; | |
1110 | char *p, *name = NULL; | |
1111 | unsigned long int n = strtoul (cp, &cp, 0); | |
1112 | if (cp != NULL && isblank (*cp)) | |
1113 | while ((p = strsep (&cp, " \t")) != NULL) | |
1114 | if (p[0] != '\0') | |
1115 | { | |
1116 | if (name == NULL) | |
1117 | name = p; | |
1118 | else | |
1119 | { | |
1120 | name = NULL; | |
1121 | break; | |
1122 | } | |
1123 | } | |
1124 | if (name == NULL) | |
1125 | { | |
1126 | error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"), | |
1127 | filename, lineno); | |
1128 | break; | |
1129 | } | |
1130 | if (n >= (64 - _DL_FIRST_EXTRA)) | |
1131 | error (EXIT_FAILURE, 0, | |
1132 | _("%s:%u: hwcap index %lu above maximum %u"), | |
1133 | filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1); | |
1134 | if (hwcap_extra[n] == NULL) | |
1135 | { | |
1136 | for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h) | |
1137 | if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h])) | |
1138 | error (EXIT_FAILURE, 0, | |
1139 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1140 | filename, lineno, h, name); | |
1141 | hwcap_extra[n] = xstrdup (name); | |
1142 | } | |
1143 | else | |
1144 | { | |
1145 | if (strcmp (name, hwcap_extra[n])) | |
1146 | error (EXIT_FAILURE, 0, | |
1147 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1148 | filename, lineno, n, hwcap_extra[n]); | |
1149 | if (opt_verbose) | |
1150 | error (0, 0, _("%s:%u: duplicate hwcap %lu %s"), | |
1151 | filename, lineno, n, name); | |
1152 | } | |
1153 | } | |
8e115d80 RM |
1154 | else |
1155 | add_dir (cp); | |
69acbe9f UD |
1156 | } |
1157 | while (!feof_unlocked (file)); | |
591e1ffb UD |
1158 | |
1159 | /* Free buffer and close file. */ | |
1160 | free (line); | |
1161 | fclose (file); | |
1162 | } | |
1163 | ||
8e115d80 RM |
1164 | /* Handle one word in an `include' line, a glob pattern of additional |
1165 | config files to read. */ | |
1166 | static void | |
1167 | parse_conf_include (const char *config_file, unsigned int lineno, | |
a334319f | 1168 | bool do_chroot, const char *pattern) |
8e115d80 RM |
1169 | { |
1170 | if (opt_chroot && pattern[0] != '/') | |
1171 | error (EXIT_FAILURE, 0, | |
1172 | _("need absolute file name for configuration file when using -r")); | |
1173 | ||
1174 | char *copy = NULL; | |
1175 | if (pattern[0] != '/' && strchr (config_file, '/') != NULL) | |
1176 | { | |
322861e8 UD |
1177 | if (asprintf (©, "%s/%s", dirname (strdupa (config_file)), |
1178 | pattern) < 0) | |
1179 | error (EXIT_FAILURE, 0, _("memory exhausted")); | |
8e115d80 RM |
1180 | pattern = copy; |
1181 | } | |
1182 | ||
1183 | glob64_t gl; | |
1184 | int result; | |
1185 | if (do_chroot && opt_chroot) | |
1186 | { | |
1187 | char *canon = chroot_canon (opt_chroot, pattern); | |
49bd556d UD |
1188 | if (canon == NULL) |
1189 | return; | |
1190 | result = glob64 (canon, 0, NULL, &gl); | |
8e115d80 RM |
1191 | free (canon); |
1192 | } | |
1193 | else | |
1194 | result = glob64 (pattern, 0, NULL, &gl); | |
1195 | ||
1196 | switch (result) | |
1197 | { | |
1198 | case 0: | |
1199 | for (size_t i = 0; i < gl.gl_pathc; ++i) | |
a334319f | 1200 | parse_conf (gl.gl_pathv[i], false); |
8e115d80 RM |
1201 | globfree64 (&gl); |
1202 | break; | |
1203 | ||
1204 | case GLOB_NOMATCH: | |
1205 | break; | |
1206 | ||
1207 | case GLOB_NOSPACE: | |
1208 | errno = ENOMEM; | |
1209 | case GLOB_ABORTED: | |
1210 | if (opt_verbose) | |
1211 | error (0, errno, _("%s:%u: cannot read directory %s"), | |
1212 | config_file, lineno, pattern); | |
1213 | break; | |
1214 | ||
1215 | default: | |
1216 | abort (); | |
1217 | break; | |
1218 | } | |
1219 | ||
72e6cdfa | 1220 | free (copy); |
8e115d80 RM |
1221 | } |
1222 | ||
0cfbb8c6 UD |
1223 | /* Honour LD_HWCAP_MASK. */ |
1224 | static void | |
1225 | set_hwcap (void) | |
1226 | { | |
1227 | char *mask = getenv ("LD_HWCAP_MASK"); | |
1228 | ||
1229 | if (mask) | |
1230 | hwcap_mask = strtoul (mask, NULL, 0); | |
1231 | } | |
1232 | ||
591e1ffb UD |
1233 | |
1234 | int | |
1235 | main (int argc, char **argv) | |
1236 | { | |
11bf311e UD |
1237 | /* Set locale via LC_ALL. */ |
1238 | setlocale (LC_ALL, ""); | |
1239 | ||
1240 | /* Set the text message domain. */ | |
1241 | textdomain (_libc_intl_domainname); | |
45eca4d1 | 1242 | |
591e1ffb | 1243 | /* Parse and process arguments. */ |
11bf311e | 1244 | int remaining; |
591e1ffb UD |
1245 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); |
1246 | ||
11bf8ce1 | 1247 | /* Remaining arguments are additional directories if opt_manual_link |
b85697f6 UD |
1248 | is not set. */ |
1249 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
1250 | { |
1251 | int i; | |
1252 | for (i = remaining; i < argc; ++i) | |
11bf8ce1 UD |
1253 | if (opt_build_cache && argv[i][0] != '/') |
1254 | error (EXIT_FAILURE, 0, | |
1255 | _("relative path `%s' used to build cache"), | |
1256 | argv[i]); | |
1257 | else | |
1258 | add_dir (argv[i]); | |
591e1ffb UD |
1259 | } |
1260 | ||
ab1d521d | 1261 | hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls"; |
ab1d521d | 1262 | |
0cfbb8c6 UD |
1263 | set_hwcap (); |
1264 | ||
591e1ffb UD |
1265 | if (opt_chroot) |
1266 | { | |
f0189a54 | 1267 | /* Normalize the path a bit, we might need it for printing later. */ |
616d9133 | 1268 | char *endp = rawmemchr (opt_chroot, '\0'); |
b4a555d6 | 1269 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
1270 | --endp; |
1271 | *endp = '\0'; | |
b4a555d6 UD |
1272 | if (endp == opt_chroot) |
1273 | opt_chroot = NULL; | |
f0189a54 | 1274 | |
b4a555d6 UD |
1275 | if (opt_chroot) |
1276 | { | |
1277 | /* It is faster to use chroot if we can. */ | |
1278 | if (!chroot (opt_chroot)) | |
1279 | { | |
1280 | if (chdir ("/")) | |
1281 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
1282 | opt_chroot = NULL; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | if (cache_file == NULL) | |
1288 | { | |
1289 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
1290 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
1291 | } |
1292 | ||
b4a555d6 UD |
1293 | if (config_file == NULL) |
1294 | config_file = LD_SO_CONF; | |
1295 | ||
591e1ffb UD |
1296 | if (opt_print_cache) |
1297 | { | |
b4a555d6 UD |
1298 | if (opt_chroot) |
1299 | { | |
1300 | char *p = chroot_canon (opt_chroot, cache_file); | |
1301 | if (p == NULL) | |
1302 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1303 | cache_file); | |
1304 | cache_file = p; | |
1305 | } | |
591e1ffb | 1306 | print_cache (cache_file); |
b4a555d6 UD |
1307 | if (opt_chroot) |
1308 | free (cache_file); | |
591e1ffb UD |
1309 | exit (0); |
1310 | } | |
1311 | ||
b4a555d6 UD |
1312 | if (opt_chroot) |
1313 | { | |
1314 | /* Canonicalize the directory name of cache_file, not cache_file, | |
27d9ffda | 1315 | because we'll rename a temporary cache file to it. */ |
b4a555d6 UD |
1316 | char *p = strrchr (cache_file, '/'); |
1317 | char *canon = chroot_canon (opt_chroot, | |
1318 | p ? (*p = '\0', cache_file) : "/"); | |
1319 | ||
1320 | if (canon == NULL) | |
4bc2bcba UD |
1321 | error (EXIT_FAILURE, errno, |
1322 | _("Can't open cache file directory %s\n"), | |
1323 | p ? cache_file : "/"); | |
b4a555d6 UD |
1324 | |
1325 | if (p) | |
1326 | ++p; | |
1327 | else | |
1328 | p = cache_file; | |
1329 | ||
1330 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
1331 | sprintf (cache_file, "%s/%s", canon, p); | |
1332 | free (canon); | |
1333 | } | |
1334 | ||
b85697f6 UD |
1335 | if (opt_manual_link) |
1336 | { | |
1337 | /* Link all given libraries manually. */ | |
1338 | int i; | |
1339 | ||
1340 | for (i = remaining; i < argc; ++i) | |
a986484f | 1341 | manual_link (argv[i]); |
b85697f6 UD |
1342 | |
1343 | exit (0); | |
1344 | } | |
45eca4d1 UD |
1345 | |
1346 | ||
591e1ffb UD |
1347 | if (opt_build_cache) |
1348 | init_cache (); | |
1349 | ||
1350 | if (!opt_only_cline) | |
1351 | { | |
a334319f | 1352 | parse_conf (config_file, true); |
334fcf2a | 1353 | |
591e1ffb | 1354 | /* Always add the standard search paths. */ |
bd89c0b5 | 1355 | add_system_dir (SLIBDIR); |
8ca91b36 | 1356 | if (strcmp (SLIBDIR, LIBDIR)) |
bd89c0b5 | 1357 | add_system_dir (LIBDIR); |
591e1ffb | 1358 | } |
45eca4d1 | 1359 | |
3f7dcb2b | 1360 | const char *aux_cache_file = _PATH_LDCONFIG_AUX_CACHE; |
4bc2bcba UD |
1361 | if (opt_chroot) |
1362 | { | |
1363 | aux_cache_file = chroot_canon (opt_chroot, aux_cache_file); | |
1364 | if (aux_cache_file == NULL) | |
1365 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1366 | _PATH_LDCONFIG_AUX_CACHE); | |
1367 | } | |
1368 | ||
27d9ffda | 1369 | if (! opt_ignore_aux_cache) |
4bc2bcba | 1370 | load_aux_cache (aux_cache_file); |
27d9ffda UD |
1371 | else |
1372 | init_aux_cache (); | |
1373 | ||
591e1ffb UD |
1374 | search_dirs (); |
1375 | ||
1376 | if (opt_build_cache) | |
27d9ffda UD |
1377 | { |
1378 | save_cache (cache_file); | |
4bc2bcba | 1379 | save_aux_cache (aux_cache_file); |
27d9ffda | 1380 | } |
591e1ffb UD |
1381 | |
1382 | return 0; | |
1383 | } |