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Commit | Line | Data |
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81fb02b0 | 1 | /* Copyright (C) 1999-2011, 2012 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\ | |
81fb02b0 | 320 | "), "2012"); |
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 | 386 | /* Canonify path: for now only remove leading and trailing |
00ee369c AS |
387 | whitespace and the trailing slashes. */ |
388 | i = strlen (entry->path); | |
69acbe9f | 389 | |
00ee369c AS |
390 | while (i > 0 && isspace (entry->path[i - 1])) |
391 | entry->path[--i] = '\0'; | |
69acbe9f | 392 | |
00ee369c AS |
393 | while (i > 0 && entry->path[i - 1] == '/') |
394 | entry->path[--i] = '\0'; | |
395 | ||
396 | if (i == 0) | |
397 | return; | |
45eca4d1 | 398 | |
539842a4 UD |
399 | char *path = entry->path; |
400 | if (opt_chroot) | |
401 | path = chroot_canon (opt_chroot, path); | |
402 | ||
403 | struct stat64 stat_buf; | |
404 | if (path == NULL || stat64 (path, &stat_buf)) | |
4ceae915 | 405 | { |
8645ad47 AJ |
406 | if (opt_verbose) |
407 | error (0, errno, _("Can't stat %s"), entry->path); | |
4ceae915 AJ |
408 | free (entry->path); |
409 | free (entry); | |
4ceae915 | 410 | } |
539842a4 UD |
411 | else |
412 | { | |
413 | entry->ino = stat_buf.st_ino; | |
414 | entry->dev = stat_buf.st_dev; | |
4ceae915 | 415 | |
539842a4 UD |
416 | add_single_dir (entry, 1); |
417 | } | |
4ceae915 | 418 | |
539842a4 UD |
419 | if (opt_chroot) |
420 | free (path); | |
591e1ffb UD |
421 | } |
422 | ||
423 | ||
b4a555d6 UD |
424 | static int |
425 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
426 | { | |
427 | int ret; | |
428 | char *canon_path; | |
429 | ||
430 | if (!opt_chroot) | |
431 | return stat64 (real_path, st); | |
432 | ||
433 | ret = lstat64 (real_path, st); | |
434 | if (ret || !S_ISLNK (st->st_mode)) | |
435 | return ret; | |
436 | ||
437 | canon_path = chroot_canon (opt_chroot, path); | |
438 | if (canon_path == NULL) | |
439 | return -1; | |
440 | ||
441 | ret = stat64 (canon_path, st); | |
442 | free (canon_path); | |
443 | return ret; | |
444 | } | |
445 | ||
591e1ffb UD |
446 | /* Create a symbolic link from soname to libname in directory path. */ |
447 | static void | |
b4a555d6 UD |
448 | create_links (const char *real_path, const char *path, const char *libname, |
449 | const char *soname) | |
591e1ffb | 450 | { |
7b0d235c | 451 | char *full_libname, *full_soname; |
b4a555d6 UD |
452 | char *real_full_libname, *real_full_soname; |
453 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
454 | int do_link = 1; |
455 | int do_remove = 1; | |
456 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 457 | |
591e1ffb | 458 | /* Get complete path. */ |
7b0d235c | 459 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 460 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
461 | sprintf (full_libname, "%s/%s", path, libname); |
462 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
463 | if (opt_chroot) |
464 | { | |
465 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 466 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
467 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
468 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
469 | } | |
470 | else | |
471 | { | |
472 | real_full_libname = full_libname; | |
473 | real_full_soname = full_soname; | |
474 | } | |
591e1ffb UD |
475 | |
476 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 477 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 478 | { |
b4a555d6 | 479 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
480 | { |
481 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
482 | return; | |
483 | } | |
484 | if (stat_lib.st_dev == stat_so.st_dev | |
485 | && stat_lib.st_ino == stat_so.st_ino) | |
486 | /* Link is already correct. */ | |
487 | do_link = 0; | |
b4a555d6 | 488 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
489 | && !S_ISLNK (lstat_so.st_mode)) |
490 | { | |
491 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
492 | do_link = 0; | |
493 | do_remove = 0; | |
494 | } | |
495 | } | |
b4a555d6 | 496 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
497 | || !S_ISLNK (lstat_so.st_mode)) |
498 | /* Unless it is a stale symlink, there is no need to remove. */ | |
499 | do_remove = 0; | |
500 | ||
501 | if (opt_verbose) | |
502 | printf ("\t%s -> %s", soname, libname); | |
503 | ||
504 | if (do_link && opt_link) | |
505 | { | |
506 | /* Remove old link. */ | |
507 | if (do_remove) | |
b4a555d6 | 508 | if (unlink (real_full_soname)) |
591e1ffb UD |
509 | { |
510 | error (0, 0, _("Can't unlink %s"), full_soname); | |
511 | do_link = 0; | |
512 | } | |
513 | /* Create symbolic link. */ | |
b4a555d6 | 514 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
515 | { |
516 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
517 | do_link = 0; | |
518 | } | |
519 | if (opt_verbose) | |
520 | { | |
521 | if (do_link) | |
522 | fputs (_(" (changed)\n"), stdout); | |
523 | else | |
524 | fputs (_(" (SKIPPED)\n"), stdout); | |
525 | } | |
526 | } | |
527 | else if (opt_verbose) | |
528 | fputs ("\n", stdout); | |
529 | } | |
530 | ||
b85697f6 UD |
531 | /* Manually link the given library. */ |
532 | static void | |
533 | manual_link (char *library) | |
534 | { | |
535 | char *path; | |
b4a555d6 UD |
536 | char *real_path; |
537 | char *real_library; | |
b85697f6 UD |
538 | char *libname; |
539 | char *soname; | |
b4a555d6 | 540 | struct stat64 stat_buf; |
b85697f6 | 541 | int flag; |
a986484f | 542 | unsigned int osversion; |
b85697f6 UD |
543 | |
544 | /* Prepare arguments for create_links call. Split library name in | |
545 | directory and filename first. Since path is allocated, we've got | |
546 | to be careful to free at the end. */ | |
547 | path = xstrdup (library); | |
548 | libname = strrchr (path, '/'); | |
549 | ||
550 | if (libname) | |
551 | { | |
552 | /* Successfully split names. Check if path is just "/" to avoid | |
27d9ffda | 553 | an empty path. */ |
b85697f6 UD |
554 | if (libname == path) |
555 | { | |
556 | libname = library + 1; | |
557 | path = xrealloc (path, 2); | |
558 | strcpy (path, "/"); | |
559 | } | |
560 | else | |
561 | { | |
562 | *libname = '\0'; | |
563 | ++libname; | |
564 | } | |
565 | } | |
566 | else | |
567 | { | |
568 | /* There's no path, construct one. */ | |
569 | libname = library; | |
570 | path = xrealloc (path, 2); | |
571 | strcpy (path, "."); | |
572 | } | |
573 | ||
b4a555d6 UD |
574 | if (opt_chroot) |
575 | { | |
576 | real_path = chroot_canon (opt_chroot, path); | |
577 | if (real_path == NULL) | |
578 | { | |
579 | error (0, errno, _("Can't find %s"), path); | |
580 | free (path); | |
581 | return; | |
582 | } | |
583 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
584 | sprintf (real_library, "%s/%s", real_path, libname); | |
585 | } | |
586 | else | |
587 | { | |
588 | real_path = path; | |
589 | real_library = library; | |
590 | } | |
591 | ||
b85697f6 | 592 | /* Do some sanity checks first. */ |
b4a555d6 | 593 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 | 594 | { |
11bf311e | 595 | error (0, errno, _("Cannot lstat %s"), library); |
b85697f6 UD |
596 | free (path); |
597 | return; | |
598 | } | |
599 | /* We don't want links here! */ | |
600 | else if (!S_ISREG (stat_buf.st_mode)) | |
601 | { | |
602 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
603 | library); | |
604 | free (path); | |
605 | return; | |
606 | } | |
27d9ffda | 607 | |
a986484f | 608 | if (process_file (real_library, library, libname, &flag, &osversion, |
27d9ffda | 609 | &soname, 0, &stat_buf)) |
b85697f6 UD |
610 | { |
611 | error (0, 0, _("No link created since soname could not be found for %s"), | |
612 | library); | |
613 | free (path); | |
614 | return; | |
615 | } | |
27d9ffda UD |
616 | if (soname == NULL) |
617 | soname = implicit_soname (libname, flag); | |
b4a555d6 | 618 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
619 | free (soname); |
620 | free (path); | |
621 | } | |
622 | ||
623 | ||
591e1ffb UD |
624 | /* Read a whole directory and search for libraries. |
625 | The purpose is two-fold: | |
626 | - search for libraries which will be added to the cache | |
627 | - create symbolic links to the soname for each library | |
628 | ||
629 | This has to be done separatly for each directory. | |
45eca4d1 | 630 | |
591e1ffb UD |
631 | To keep track of which libraries to add to the cache and which |
632 | links to create, we save a list of all libraries. | |
633 | ||
634 | The algorithm is basically: | |
635 | for all libraries in the directory do | |
636 | get soname of library | |
637 | if soname is already in list | |
638 | if new library is newer, replace entry | |
639 | otherwise ignore this library | |
640 | otherwise add library to list | |
45eca4d1 | 641 | |
591e1ffb UD |
642 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
643 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
644 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
645 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
646 | libxy.so.1.1. */ | |
647 | ||
648 | /* Information for one library. */ | |
45eca4d1 | 649 | struct dlib_entry |
591e1ffb UD |
650 | { |
651 | char *name; | |
652 | char *soname; | |
653 | int flag; | |
654 | int is_link; | |
a986484f | 655 | unsigned int osversion; |
591e1ffb UD |
656 | struct dlib_entry *next; |
657 | }; | |
658 | ||
659 | ||
660 | static void | |
661 | search_dir (const struct dir_entry *entry) | |
662 | { | |
a6c1c03a | 663 | uint64_t hwcap = path_hwcap (entry->path); |
591e1ffb | 664 | if (opt_verbose) |
45eca4d1 UD |
665 | { |
666 | if (hwcap != 0) | |
ab1d521d | 667 | printf ("%s: (hwcap: %#.16" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
668 | else |
669 | printf ("%s:\n", entry->path); | |
670 | } | |
671 | ||
27d9ffda UD |
672 | char *dir_name; |
673 | char *real_file_name; | |
674 | size_t real_file_name_len; | |
675 | size_t file_name_len = PATH_MAX; | |
676 | char *file_name = alloca (file_name_len); | |
b4a555d6 UD |
677 | if (opt_chroot) |
678 | { | |
679 | dir_name = chroot_canon (opt_chroot, entry->path); | |
680 | real_file_name_len = PATH_MAX; | |
681 | real_file_name = alloca (real_file_name_len); | |
682 | } | |
683 | else | |
684 | { | |
685 | dir_name = entry->path; | |
686 | real_file_name_len = 0; | |
687 | real_file_name = file_name; | |
688 | } | |
689 | ||
27d9ffda | 690 | DIR *dir; |
b4a555d6 | 691 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) |
591e1ffb UD |
692 | { |
693 | if (opt_verbose) | |
694 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
695 | if (opt_chroot && dir_name) |
696 | free (dir_name); | |
591e1ffb UD |
697 | return; |
698 | } | |
45eca4d1 | 699 | |
27d9ffda UD |
700 | struct dirent64 *direntry; |
701 | struct dlib_entry *dlibs = NULL; | |
2b510e91 | 702 | while ((direntry = readdir64 (dir)) != NULL) |
591e1ffb UD |
703 | { |
704 | int flag; | |
705 | #ifdef _DIRENT_HAVE_D_TYPE | |
706 | /* We only look at links and regular files. */ | |
707 | if (direntry->d_type != DT_UNKNOWN | |
708 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
709 | && direntry->d_type != DT_REG |
710 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
711 | continue; |
712 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
713 | /* Does this file look like a shared library or is it a hwcap |
714 | subdirectory? The dynamic linker is also considered as | |
715 | shared library. */ | |
716 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
717 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
718 | || strstr (direntry->d_name, ".so") == NULL) | |
95ce33a5 UD |
719 | && ( |
720 | #ifdef _DIRENT_HAVE_D_TYPE | |
721 | direntry->d_type == DT_REG || | |
722 | #endif | |
723 | !is_hwcap_platform (direntry->d_name))) | |
591e1ffb | 724 | continue; |
27d9ffda UD |
725 | |
726 | size_t len = strlen (direntry->d_name); | |
3858bf28 RM |
727 | /* Skip temporary files created by the prelink program. Files with |
728 | names like these are never really DSOs we want to look at. */ | |
729 | if (len >= sizeof (".#prelink#") - 1) | |
730 | { | |
731 | if (strcmp (direntry->d_name + len - sizeof (".#prelink#") + 1, | |
732 | ".#prelink#") == 0) | |
733 | continue; | |
734 | if (len >= sizeof (".#prelink#.XXXXXX") - 1 | |
735 | && memcmp (direntry->d_name + len - sizeof (".#prelink#.XXXXXX") | |
736 | + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0) | |
737 | continue; | |
738 | } | |
30a3aa75 | 739 | len += strlen (entry->path) + 2; |
7b0d235c | 740 | if (len > file_name_len) |
591e1ffb | 741 | { |
30a3aa75 | 742 | file_name_len = len; |
7b0d235c | 743 | file_name = alloca (file_name_len); |
b4a555d6 UD |
744 | if (!opt_chroot) |
745 | real_file_name = file_name; | |
746 | } | |
747 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
748 | if (opt_chroot) | |
749 | { | |
30a3aa75 | 750 | len = strlen (dir_name) + strlen (direntry->d_name) + 2; |
b4a555d6 UD |
751 | if (len > real_file_name_len) |
752 | { | |
30a3aa75 | 753 | real_file_name_len = len; |
b4a555d6 UD |
754 | real_file_name = alloca (real_file_name_len); |
755 | } | |
756 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 757 | } |
27d9ffda UD |
758 | |
759 | struct stat64 lstat_buf; | |
7c3002f0 | 760 | #ifdef _DIRENT_HAVE_D_TYPE |
27d9ffda | 761 | /* We optimize and try to do the lstat call only if needed. */ |
7c3002f0 | 762 | if (direntry->d_type != DT_UNKNOWN) |
4ceae915 | 763 | lstat_buf.st_mode = DTTOIF (direntry->d_type); |
7c3002f0 UD |
764 | else |
765 | #endif | |
95ce33a5 | 766 | if (__builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) |
7c3002f0 | 767 | { |
95ce33a5 | 768 | error (0, errno, _("Cannot lstat %s"), file_name); |
7c3002f0 UD |
769 | continue; |
770 | } | |
771 | ||
27d9ffda UD |
772 | struct stat64 stat_buf; |
773 | int is_dir; | |
774 | int is_link = S_ISLNK (lstat_buf.st_mode); | |
4ceae915 | 775 | if (is_link) |
27d9ffda | 776 | { |
4ceae915 AJ |
777 | /* In case of symlink, we check if the symlink refers to |
778 | a directory. */ | |
7dee2660 UD |
779 | char *target_name = real_file_name; |
780 | if (opt_chroot) | |
781 | { | |
782 | target_name = chroot_canon (opt_chroot, file_name); | |
783 | if (target_name == NULL) | |
784 | { | |
785 | if (strstr (file_name, ".so") == NULL) | |
786 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
787 | continue; | |
788 | } | |
789 | } | |
790 | if (__builtin_expect (stat64 (target_name, &stat_buf), 0)) | |
4ceae915 | 791 | { |
8645ad47 | 792 | if (opt_verbose) |
95ce33a5 | 793 | error (0, errno, _("Cannot stat %s"), file_name); |
647eb037 UD |
794 | |
795 | /* Remove stale symlinks. */ | |
796 | if (strstr (direntry->d_name, ".so.")) | |
797 | unlink (real_file_name); | |
4ceae915 AJ |
798 | continue; |
799 | } | |
800 | is_dir = S_ISDIR (stat_buf.st_mode); | |
27d9ffda UD |
801 | |
802 | /* lstat_buf is later stored, update contents. */ | |
803 | lstat_buf.st_dev = stat_buf.st_dev; | |
804 | lstat_buf.st_ino = stat_buf.st_ino; | |
805 | lstat_buf.st_size = stat_buf.st_size; | |
806 | lstat_buf.st_ctime = stat_buf.st_ctime; | |
4ceae915 AJ |
807 | } |
808 | else | |
809 | is_dir = S_ISDIR (lstat_buf.st_mode); | |
810 | ||
811 | if (is_dir && is_hwcap_platform (direntry->d_name)) | |
45eca4d1 | 812 | { |
a8fd59b0 AJ |
813 | /* Handle subdirectory later. */ |
814 | struct dir_entry *new_entry; | |
815 | ||
816 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 817 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
818 | new_entry->flag = entry->flag; |
819 | new_entry->next = NULL; | |
27d9ffda UD |
820 | #ifdef _DIRENT_HAVE_D_TYPE |
821 | /* We have filled in lstat only #ifndef | |
822 | _DIRENT_HAVE_D_TYPE. Fill it in if needed. */ | |
823 | if (!is_link | |
824 | && direntry->d_type != DT_UNKNOWN | |
825 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
4ceae915 | 826 | { |
27d9ffda UD |
827 | error (0, errno, _("Cannot lstat %s"), file_name); |
828 | free (new_entry->path); | |
829 | free (new_entry); | |
830 | continue; | |
4ceae915 | 831 | } |
95ce33a5 | 832 | #endif |
27d9ffda UD |
833 | new_entry->ino = lstat_buf.st_ino; |
834 | new_entry->dev = lstat_buf.st_dev; | |
a8fd59b0 | 835 | add_single_dir (new_entry, 0); |
45eca4d1 UD |
836 | continue; |
837 | } | |
0f843f89 | 838 | else if (!S_ISREG (lstat_buf.st_mode) && !is_link) |
591e1ffb UD |
839 | continue; |
840 | ||
27d9ffda | 841 | char *real_name; |
b4a555d6 UD |
842 | if (opt_chroot && is_link) |
843 | { | |
844 | real_name = chroot_canon (opt_chroot, file_name); | |
845 | if (real_name == NULL) | |
846 | { | |
847 | if (strstr (file_name, ".so") == NULL) | |
848 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
849 | continue; | |
850 | } | |
851 | } | |
852 | else | |
853 | real_name = real_file_name; | |
591e1ffb | 854 | |
27d9ffda UD |
855 | #ifdef _DIRENT_HAVE_D_TYPE |
856 | /* Call lstat64 if not done yet. */ | |
857 | if (!is_link | |
858 | && direntry->d_type != DT_UNKNOWN | |
859 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
b4a555d6 | 860 | { |
27d9ffda | 861 | error (0, errno, _("Cannot lstat %s"), file_name); |
b4a555d6 UD |
862 | continue; |
863 | } | |
27d9ffda UD |
864 | #endif |
865 | ||
866 | /* First search whether the auxiliary cache contains this | |
867 | library already and it's not changed. */ | |
868 | char *soname; | |
869 | unsigned int osversion; | |
870 | if (!search_aux_cache (&lstat_buf, &flag, &osversion, &soname)) | |
871 | { | |
872 | if (process_file (real_name, file_name, direntry->d_name, &flag, | |
873 | &osversion, &soname, is_link, &lstat_buf)) | |
874 | { | |
875 | if (real_name != real_file_name) | |
876 | free (real_name); | |
877 | continue; | |
878 | } | |
879 | else if (opt_build_cache) | |
880 | add_to_aux_cache (&lstat_buf, flag, osversion, soname); | |
881 | } | |
b4a555d6 | 882 | |
27d9ffda UD |
883 | if (soname == NULL) |
884 | soname = implicit_soname (direntry->d_name, flag); | |
82d8607d UD |
885 | |
886 | /* A link may just point to itself. */ | |
591e1ffb UD |
887 | if (is_link) |
888 | { | |
82d8607d UD |
889 | /* If the path the link points to isn't its soname and it is not |
890 | .so symlink for ld(1) only, we treat it as a normal file. */ | |
2fe98a4a | 891 | const char *real_base_name = basename (real_file_name); |
82d8607d UD |
892 | |
893 | if (strcmp (real_base_name, soname) != 0) | |
894 | { | |
895 | len = strlen (real_base_name); | |
896 | if (len < strlen (".so") | |
897 | || strcmp (real_base_name + len - strlen (".so"), ".so") != 0 | |
898 | || strncmp (real_base_name, soname, len) != 0) | |
899 | is_link = 0; | |
900 | } | |
27d9ffda | 901 | } |
45eca4d1 | 902 | |
395412a0 UD |
903 | if (real_name != real_file_name) |
904 | free (real_name); | |
905 | ||
82d8607d UD |
906 | if (is_link) |
907 | { | |
908 | free (soname); | |
909 | soname = xstrdup (direntry->d_name); | |
910 | } | |
911 | ||
591e1ffb UD |
912 | if (flag == FLAG_ELF |
913 | && (entry->flag == FLAG_ELF_LIBC5 | |
914 | || entry->flag == FLAG_ELF_LIBC6)) | |
915 | flag = entry->flag; | |
27d9ffda | 916 | |
591e1ffb UD |
917 | /* Some sanity checks to print warnings. */ |
918 | if (opt_verbose) | |
919 | { | |
920 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
921 | && entry->flag != FLAG_ANY) | |
7b0d235c | 922 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
923 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
924 | && entry->flag != FLAG_ANY) | |
7b0d235c | 925 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
926 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
927 | && entry->flag != FLAG_ANY) | |
7b0d235c | 928 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 929 | } |
45eca4d1 | 930 | |
591e1ffb | 931 | /* Add library to list. */ |
27d9ffda | 932 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
933 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
934 | { | |
935 | /* Is soname already in list? */ | |
936 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
937 | { | |
938 | /* Prefer a file to a link, otherwise check which one | |
939 | is newer. */ | |
940 | if ((!is_link && dlib_ptr->is_link) | |
941 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 942 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
943 | { |
944 | /* It's newer - add it. */ | |
945 | /* Flag should be the same - sanity check. */ | |
946 | if (dlib_ptr->flag != flag) | |
947 | { | |
948 | if (dlib_ptr->flag == FLAG_ELF | |
949 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
950 | dlib_ptr->flag = flag; | |
951 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
952 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
953 | && flag == FLAG_ELF) | |
954 | dlib_ptr->flag = flag; | |
955 | else | |
956 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
27d9ffda UD |
957 | dlib_ptr->name, direntry->d_name, |
958 | entry->path); | |
591e1ffb UD |
959 | } |
960 | free (dlib_ptr->name); | |
961 | dlib_ptr->name = xstrdup (direntry->d_name); | |
962 | dlib_ptr->is_link = is_link; | |
27d9ffda | 963 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
964 | } |
965 | /* Don't add this library, abort loop. */ | |
966 | /* Also free soname, since it's dynamically allocated. */ | |
967 | free (soname); | |
968 | break; | |
969 | } | |
970 | } | |
971 | /* Add the library if it's not already in. */ | |
972 | if (dlib_ptr == NULL) | |
973 | { | |
974 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
975 | dlib_ptr->name = xstrdup (direntry->d_name); | |
591e1ffb | 976 | dlib_ptr->soname = soname; |
27d9ffda | 977 | dlib_ptr->flag = flag; |
591e1ffb | 978 | dlib_ptr->is_link = is_link; |
27d9ffda | 979 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
980 | /* Add at head of list. */ |
981 | dlib_ptr->next = dlibs; | |
982 | dlibs = dlib_ptr; | |
983 | } | |
984 | } | |
985 | ||
986 | closedir (dir); | |
987 | ||
988 | /* Now dlibs contains a list of all libs - add those to the cache | |
989 | and created all symbolic links. */ | |
27d9ffda | 990 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
991 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
992 | { | |
993 | /* Don't create links to links. */ | |
994 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
995 | create_links (dir_name, entry->path, dlib_ptr->name, |
996 | dlib_ptr->soname); | |
591e1ffb | 997 | if (opt_build_cache) |
a986484f UD |
998 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
999 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
1000 | } |
1001 | ||
1002 | /* Free all resources. */ | |
45eca4d1 | 1003 | while (dlibs) |
591e1ffb UD |
1004 | { |
1005 | dlib_ptr = dlibs; | |
1006 | free (dlib_ptr->soname); | |
1007 | free (dlib_ptr->name); | |
1008 | dlibs = dlibs->next; | |
1009 | free (dlib_ptr); | |
1010 | } | |
b4a555d6 UD |
1011 | |
1012 | if (opt_chroot && dir_name) | |
1013 | free (dir_name); | |
591e1ffb UD |
1014 | } |
1015 | ||
1016 | /* Search through all libraries. */ | |
1017 | static void | |
1018 | search_dirs (void) | |
1019 | { | |
1020 | struct dir_entry *entry; | |
1021 | ||
1022 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
1023 | search_dir (entry); | |
1024 | ||
1025 | /* Free all allocated memory. */ | |
1026 | while (dir_entries) | |
1027 | { | |
1028 | entry = dir_entries; | |
1029 | dir_entries = dir_entries->next; | |
1030 | free (entry->path); | |
1031 | free (entry); | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | ||
8e115d80 | 1036 | static void parse_conf_include (const char *config_file, unsigned int lineno, |
a334319f | 1037 | bool do_chroot, const char *pattern); |
8e115d80 | 1038 | |
591e1ffb UD |
1039 | /* Parse configuration file. */ |
1040 | static void | |
a334319f | 1041 | parse_conf (const char *filename, bool do_chroot) |
591e1ffb | 1042 | { |
b4a555d6 | 1043 | FILE *file = NULL; |
591e1ffb | 1044 | char *line = NULL; |
b4a555d6 | 1045 | const char *canon; |
591e1ffb | 1046 | size_t len = 0; |
8e115d80 | 1047 | unsigned int lineno; |
45eca4d1 | 1048 | |
8e115d80 | 1049 | if (do_chroot && opt_chroot) |
b4a555d6 UD |
1050 | { |
1051 | canon = chroot_canon (opt_chroot, filename); | |
1052 | if (canon) | |
1053 | file = fopen (canon, "r"); | |
1054 | else | |
1055 | canon = filename; | |
1056 | } | |
1057 | else | |
1058 | { | |
1059 | canon = filename; | |
1060 | file = fopen (filename, "r"); | |
1061 | } | |
591e1ffb UD |
1062 | |
1063 | if (file == NULL) | |
1064 | { | |
b4a555d6 UD |
1065 | error (0, errno, _("Can't open configuration file %s"), canon); |
1066 | if (canon != filename) | |
1067 | free ((char *) canon); | |
591e1ffb UD |
1068 | return; |
1069 | } | |
1070 | ||
c96873d7 UD |
1071 | /* No threads use this stream. */ |
1072 | __fsetlocking (file, FSETLOCKING_BYCALLER); | |
1073 | ||
b4a555d6 UD |
1074 | if (canon != filename) |
1075 | free ((char *) canon); | |
1076 | ||
8e115d80 | 1077 | lineno = 0; |
591e1ffb UD |
1078 | do |
1079 | { | |
1080 | ssize_t n = getline (&line, &len, file); | |
1081 | if (n < 0) | |
1082 | break; | |
1083 | ||
8e115d80 | 1084 | ++lineno; |
591e1ffb UD |
1085 | if (line[n - 1] == '\n') |
1086 | line[n - 1] = '\0'; | |
1087 | ||
1088 | /* Because the file format does not know any form of quoting we | |
1089 | can search forward for the next '#' character and if found | |
1090 | make it terminating the line. */ | |
1091 | *strchrnul (line, '#') = '\0'; | |
1092 | ||
69acbe9f UD |
1093 | /* Remove leading whitespace. NUL is no whitespace character. */ |
1094 | char *cp = line; | |
1095 | while (isspace (*cp)) | |
1096 | ++cp; | |
1097 | ||
591e1ffb | 1098 | /* If the line is blank it is ignored. */ |
69acbe9f | 1099 | if (cp[0] == '\0') |
591e1ffb UD |
1100 | continue; |
1101 | ||
8e115d80 RM |
1102 | if (!strncmp (cp, "include", 7) && isblank (cp[7])) |
1103 | { | |
1104 | char *dir; | |
1105 | cp += 8; | |
1106 | while ((dir = strsep (&cp, " \t")) != NULL) | |
1107 | if (dir[0] != '\0') | |
a334319f | 1108 | parse_conf_include (filename, lineno, do_chroot, dir); |
8e115d80 | 1109 | } |
ab1d521d RM |
1110 | else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5])) |
1111 | { | |
1112 | cp += 6; | |
1113 | char *p, *name = NULL; | |
1114 | unsigned long int n = strtoul (cp, &cp, 0); | |
1115 | if (cp != NULL && isblank (*cp)) | |
1116 | while ((p = strsep (&cp, " \t")) != NULL) | |
1117 | if (p[0] != '\0') | |
1118 | { | |
1119 | if (name == NULL) | |
1120 | name = p; | |
1121 | else | |
1122 | { | |
1123 | name = NULL; | |
1124 | break; | |
1125 | } | |
1126 | } | |
1127 | if (name == NULL) | |
1128 | { | |
1129 | error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"), | |
1130 | filename, lineno); | |
1131 | break; | |
1132 | } | |
1133 | if (n >= (64 - _DL_FIRST_EXTRA)) | |
1134 | error (EXIT_FAILURE, 0, | |
1135 | _("%s:%u: hwcap index %lu above maximum %u"), | |
1136 | filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1); | |
1137 | if (hwcap_extra[n] == NULL) | |
1138 | { | |
1139 | for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h) | |
1140 | if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h])) | |
1141 | error (EXIT_FAILURE, 0, | |
1142 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1143 | filename, lineno, h, name); | |
1144 | hwcap_extra[n] = xstrdup (name); | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | if (strcmp (name, hwcap_extra[n])) | |
1149 | error (EXIT_FAILURE, 0, | |
1150 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1151 | filename, lineno, n, hwcap_extra[n]); | |
1152 | if (opt_verbose) | |
1153 | error (0, 0, _("%s:%u: duplicate hwcap %lu %s"), | |
1154 | filename, lineno, n, name); | |
1155 | } | |
1156 | } | |
8e115d80 RM |
1157 | else |
1158 | add_dir (cp); | |
69acbe9f UD |
1159 | } |
1160 | while (!feof_unlocked (file)); | |
591e1ffb UD |
1161 | |
1162 | /* Free buffer and close file. */ | |
1163 | free (line); | |
1164 | fclose (file); | |
1165 | } | |
1166 | ||
8e115d80 RM |
1167 | /* Handle one word in an `include' line, a glob pattern of additional |
1168 | config files to read. */ | |
1169 | static void | |
1170 | parse_conf_include (const char *config_file, unsigned int lineno, | |
a334319f | 1171 | bool do_chroot, const char *pattern) |
8e115d80 RM |
1172 | { |
1173 | if (opt_chroot && pattern[0] != '/') | |
1174 | error (EXIT_FAILURE, 0, | |
1175 | _("need absolute file name for configuration file when using -r")); | |
1176 | ||
1177 | char *copy = NULL; | |
1178 | if (pattern[0] != '/' && strchr (config_file, '/') != NULL) | |
1179 | { | |
322861e8 UD |
1180 | if (asprintf (©, "%s/%s", dirname (strdupa (config_file)), |
1181 | pattern) < 0) | |
1182 | error (EXIT_FAILURE, 0, _("memory exhausted")); | |
8e115d80 RM |
1183 | pattern = copy; |
1184 | } | |
1185 | ||
1186 | glob64_t gl; | |
1187 | int result; | |
1188 | if (do_chroot && opt_chroot) | |
1189 | { | |
1190 | char *canon = chroot_canon (opt_chroot, pattern); | |
49bd556d UD |
1191 | if (canon == NULL) |
1192 | return; | |
1193 | result = glob64 (canon, 0, NULL, &gl); | |
8e115d80 RM |
1194 | free (canon); |
1195 | } | |
1196 | else | |
1197 | result = glob64 (pattern, 0, NULL, &gl); | |
1198 | ||
1199 | switch (result) | |
1200 | { | |
1201 | case 0: | |
1202 | for (size_t i = 0; i < gl.gl_pathc; ++i) | |
a334319f | 1203 | parse_conf (gl.gl_pathv[i], false); |
8e115d80 RM |
1204 | globfree64 (&gl); |
1205 | break; | |
1206 | ||
1207 | case GLOB_NOMATCH: | |
1208 | break; | |
1209 | ||
1210 | case GLOB_NOSPACE: | |
1211 | errno = ENOMEM; | |
1212 | case GLOB_ABORTED: | |
1213 | if (opt_verbose) | |
1214 | error (0, errno, _("%s:%u: cannot read directory %s"), | |
1215 | config_file, lineno, pattern); | |
1216 | break; | |
1217 | ||
1218 | default: | |
1219 | abort (); | |
1220 | break; | |
1221 | } | |
1222 | ||
72e6cdfa | 1223 | free (copy); |
8e115d80 RM |
1224 | } |
1225 | ||
0cfbb8c6 UD |
1226 | /* Honour LD_HWCAP_MASK. */ |
1227 | static void | |
1228 | set_hwcap (void) | |
1229 | { | |
1230 | char *mask = getenv ("LD_HWCAP_MASK"); | |
1231 | ||
1232 | if (mask) | |
1233 | hwcap_mask = strtoul (mask, NULL, 0); | |
1234 | } | |
1235 | ||
591e1ffb UD |
1236 | |
1237 | int | |
1238 | main (int argc, char **argv) | |
1239 | { | |
11bf311e UD |
1240 | /* Set locale via LC_ALL. */ |
1241 | setlocale (LC_ALL, ""); | |
1242 | ||
1243 | /* Set the text message domain. */ | |
1244 | textdomain (_libc_intl_domainname); | |
45eca4d1 | 1245 | |
591e1ffb | 1246 | /* Parse and process arguments. */ |
11bf311e | 1247 | int remaining; |
591e1ffb UD |
1248 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); |
1249 | ||
11bf8ce1 | 1250 | /* Remaining arguments are additional directories if opt_manual_link |
b85697f6 UD |
1251 | is not set. */ |
1252 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
1253 | { |
1254 | int i; | |
1255 | for (i = remaining; i < argc; ++i) | |
11bf8ce1 UD |
1256 | if (opt_build_cache && argv[i][0] != '/') |
1257 | error (EXIT_FAILURE, 0, | |
1258 | _("relative path `%s' used to build cache"), | |
1259 | argv[i]); | |
1260 | else | |
1261 | add_dir (argv[i]); | |
591e1ffb UD |
1262 | } |
1263 | ||
ab1d521d | 1264 | hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls"; |
ab1d521d | 1265 | |
0cfbb8c6 UD |
1266 | set_hwcap (); |
1267 | ||
591e1ffb UD |
1268 | if (opt_chroot) |
1269 | { | |
f0189a54 | 1270 | /* Normalize the path a bit, we might need it for printing later. */ |
616d9133 | 1271 | char *endp = rawmemchr (opt_chroot, '\0'); |
b4a555d6 | 1272 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
1273 | --endp; |
1274 | *endp = '\0'; | |
b4a555d6 UD |
1275 | if (endp == opt_chroot) |
1276 | opt_chroot = NULL; | |
f0189a54 | 1277 | |
b4a555d6 UD |
1278 | if (opt_chroot) |
1279 | { | |
1280 | /* It is faster to use chroot if we can. */ | |
1281 | if (!chroot (opt_chroot)) | |
1282 | { | |
1283 | if (chdir ("/")) | |
1284 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
1285 | opt_chroot = NULL; | |
1286 | } | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | if (cache_file == NULL) | |
1291 | { | |
1292 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
1293 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
1294 | } |
1295 | ||
b4a555d6 UD |
1296 | if (config_file == NULL) |
1297 | config_file = LD_SO_CONF; | |
1298 | ||
591e1ffb UD |
1299 | if (opt_print_cache) |
1300 | { | |
b4a555d6 UD |
1301 | if (opt_chroot) |
1302 | { | |
1303 | char *p = chroot_canon (opt_chroot, cache_file); | |
1304 | if (p == NULL) | |
1305 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1306 | cache_file); | |
1307 | cache_file = p; | |
1308 | } | |
591e1ffb | 1309 | print_cache (cache_file); |
b4a555d6 UD |
1310 | if (opt_chroot) |
1311 | free (cache_file); | |
591e1ffb UD |
1312 | exit (0); |
1313 | } | |
1314 | ||
b4a555d6 UD |
1315 | if (opt_chroot) |
1316 | { | |
1317 | /* Canonicalize the directory name of cache_file, not cache_file, | |
27d9ffda | 1318 | because we'll rename a temporary cache file to it. */ |
b4a555d6 UD |
1319 | char *p = strrchr (cache_file, '/'); |
1320 | char *canon = chroot_canon (opt_chroot, | |
1321 | p ? (*p = '\0', cache_file) : "/"); | |
1322 | ||
1323 | if (canon == NULL) | |
4bc2bcba UD |
1324 | error (EXIT_FAILURE, errno, |
1325 | _("Can't open cache file directory %s\n"), | |
1326 | p ? cache_file : "/"); | |
b4a555d6 UD |
1327 | |
1328 | if (p) | |
1329 | ++p; | |
1330 | else | |
1331 | p = cache_file; | |
1332 | ||
1333 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
1334 | sprintf (cache_file, "%s/%s", canon, p); | |
1335 | free (canon); | |
1336 | } | |
1337 | ||
b85697f6 UD |
1338 | if (opt_manual_link) |
1339 | { | |
1340 | /* Link all given libraries manually. */ | |
1341 | int i; | |
1342 | ||
1343 | for (i = remaining; i < argc; ++i) | |
a986484f | 1344 | manual_link (argv[i]); |
b85697f6 UD |
1345 | |
1346 | exit (0); | |
1347 | } | |
45eca4d1 UD |
1348 | |
1349 | ||
591e1ffb UD |
1350 | if (opt_build_cache) |
1351 | init_cache (); | |
1352 | ||
1353 | if (!opt_only_cline) | |
1354 | { | |
a334319f | 1355 | parse_conf (config_file, true); |
334fcf2a | 1356 | |
591e1ffb | 1357 | /* Always add the standard search paths. */ |
bd89c0b5 | 1358 | add_system_dir (SLIBDIR); |
8ca91b36 | 1359 | if (strcmp (SLIBDIR, LIBDIR)) |
bd89c0b5 | 1360 | add_system_dir (LIBDIR); |
591e1ffb | 1361 | } |
45eca4d1 | 1362 | |
3f7dcb2b | 1363 | const char *aux_cache_file = _PATH_LDCONFIG_AUX_CACHE; |
4bc2bcba | 1364 | if (opt_chroot) |
6db52fbb | 1365 | aux_cache_file = chroot_canon (opt_chroot, aux_cache_file); |
4bc2bcba | 1366 | |
6db52fbb | 1367 | if (! opt_ignore_aux_cache && aux_cache_file) |
4bc2bcba | 1368 | load_aux_cache (aux_cache_file); |
27d9ffda UD |
1369 | else |
1370 | init_aux_cache (); | |
1371 | ||
591e1ffb UD |
1372 | search_dirs (); |
1373 | ||
1374 | if (opt_build_cache) | |
27d9ffda UD |
1375 | { |
1376 | save_cache (cache_file); | |
6db52fbb | 1377 | if (aux_cache_file) |
c0dafcf1 | 1378 | save_aux_cache (aux_cache_file); |
27d9ffda | 1379 | } |
591e1ffb UD |
1380 | |
1381 | return 0; | |
1382 | } |