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f7a9f785 | 1 | /* Copyright (C) 1999-2016 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 | 15 | You should have received a copy of the GNU General Public License |
59ba27a6 | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
591e1ffb | 17 | |
ee600e3f | 18 | #define PROCINFO_CLASS static |
7b0d235c | 19 | #include <alloca.h> |
591e1ffb UD |
20 | #include <argp.h> |
21 | #include <dirent.h> | |
9c95d361 | 22 | #include <elf.h> |
591e1ffb UD |
23 | #include <error.h> |
24 | #include <errno.h> | |
5a35dfca | 25 | #include <inttypes.h> |
591e1ffb | 26 | #include <libintl.h> |
11bf311e | 27 | #include <locale.h> |
f57ebe29 | 28 | #include <stdbool.h> |
591e1ffb | 29 | #include <stdio.h> |
c96873d7 | 30 | #include <stdio_ext.h> |
591e1ffb UD |
31 | #include <stdlib.h> |
32 | #include <string.h> | |
33 | #include <unistd.h> | |
e054f494 | 34 | #include <stdint.h> |
591e1ffb UD |
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 | |
13e23af7 | 177 | /* Is this a normal hwcap for the machine like "fpu?" */ |
0cfbb8c6 | 178 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & hwcap_mask)) |
45eca4d1 | 179 | return 1; |
a6c1c03a | 180 | |
13e23af7 | 181 | /* Is this a platform pseudo-hwcap like "i686?" */ |
a6c1c03a AJ |
182 | hwcap_idx = _dl_string_platform (name); |
183 | if (hwcap_idx != -1) | |
184 | return 1; | |
185 | ||
13e23af7 CD |
186 | /* Is this one of the extra pseudo-hwcaps that we map beyond |
187 | _DL_FIRST_EXTRA like "tls", or "nosegneg?" */ | |
ab1d521d RM |
188 | for (hwcap_idx = _DL_FIRST_EXTRA; hwcap_idx < 64; ++hwcap_idx) |
189 | if (hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA] != NULL | |
190 | && !strcmp (name, hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA])) | |
191 | return 1; | |
676fde70 | 192 | |
45eca4d1 UD |
193 | return 0; |
194 | } | |
195 | ||
a6c1c03a AJ |
196 | /* Get hwcap (including platform) encoding of path. */ |
197 | static uint64_t | |
45eca4d1 UD |
198 | path_hwcap (const char *path) |
199 | { | |
200 | char *str = xstrdup (path); | |
201 | char *ptr; | |
a6c1c03a AJ |
202 | uint64_t hwcap = 0; |
203 | uint64_t h; | |
45eca4d1 UD |
204 | |
205 | size_t len; | |
206 | ||
207 | len = strlen (str); | |
208 | if (str[len] == '/') | |
209 | str[len] = '\0'; | |
210 | ||
211 | /* Search pathname from the end and check for hwcap strings. */ | |
212 | for (;;) | |
213 | { | |
214 | ptr = strrchr (str, '/'); | |
215 | ||
216 | if (ptr == NULL) | |
217 | break; | |
218 | ||
a6c1c03a | 219 | h = _dl_string_hwcap (ptr + 1); |
45eca4d1 | 220 | |
59553897 UD |
221 | if (h == (uint64_t) -1) |
222 | { | |
223 | h = _dl_string_platform (ptr + 1); | |
224 | if (h == (uint64_t) -1) | |
676fde70 | 225 | { |
ab1d521d RM |
226 | for (h = _DL_FIRST_EXTRA; h < 64; ++h) |
227 | if (hwcap_extra[h - _DL_FIRST_EXTRA] != NULL | |
228 | && !strcmp (ptr + 1, hwcap_extra[h - _DL_FIRST_EXTRA])) | |
229 | break; | |
230 | if (h == 64) | |
676fde70 UD |
231 | break; |
232 | } | |
59553897 | 233 | } |
a6c1c03a | 234 | hwcap += 1ULL << h; |
591e1ffb | 235 | |
45eca4d1 UD |
236 | /* Search the next part of the path. */ |
237 | *ptr = '\0'; | |
238 | } | |
239 | ||
240 | free (str); | |
241 | return hwcap; | |
242 | } | |
591e1ffb UD |
243 | |
244 | /* Handle program arguments. */ | |
245 | static error_t | |
246 | parse_opt (int key, char *arg, struct argp_state *state) | |
247 | { | |
248 | switch (key) | |
249 | { | |
250 | case 'C': | |
251 | cache_file = arg; | |
27d9ffda UD |
252 | /* Ignore auxiliary cache since we use non-standard cache. */ |
253 | opt_ignore_aux_cache = 1; | |
591e1ffb UD |
254 | break; |
255 | case 'f': | |
256 | config_file = arg; | |
257 | break; | |
27d9ffda UD |
258 | case 'i': |
259 | opt_ignore_aux_cache = 1; | |
260 | break; | |
b85697f6 UD |
261 | case 'l': |
262 | opt_manual_link = 1; | |
263 | break; | |
591e1ffb UD |
264 | case 'N': |
265 | opt_build_cache = 0; | |
266 | break; | |
267 | case 'n': | |
268 | opt_build_cache = 0; | |
269 | opt_only_cline = 1; | |
270 | break; | |
271 | case 'p': | |
272 | opt_print_cache = 1; | |
273 | break; | |
274 | case 'r': | |
275 | opt_chroot = arg; | |
276 | break; | |
277 | case 'v': | |
278 | opt_verbose = 1; | |
279 | break; | |
280 | case 'X': | |
281 | opt_link = 0; | |
282 | break; | |
45eca4d1 UD |
283 | case 'c': |
284 | if (strcmp (arg, "old") == 0) | |
285 | opt_format = 0; | |
286 | else if (strcmp (arg, "compat") == 0) | |
287 | opt_format = 1; | |
288 | else if (strcmp (arg, "new") == 0) | |
289 | opt_format = 2; | |
290 | break; | |
591e1ffb UD |
291 | default: |
292 | return ARGP_ERR_UNKNOWN; | |
293 | } | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
cbbcaf23 UD |
298 | /* Print bug-reporting information in the help message. */ |
299 | static char * | |
300 | more_help (int key, const char *text, void *input) | |
301 | { | |
8b748aed | 302 | char *tp = NULL; |
cbbcaf23 UD |
303 | switch (key) |
304 | { | |
305 | case ARGP_KEY_HELP_EXTRA: | |
306 | /* We print some extra information. */ | |
8b748aed | 307 | if (asprintf (&tp, gettext ("\ |
cbbcaf23 | 308 | For bug reporting instructions, please see:\n\ |
8b748aed JM |
309 | %s.\n"), REPORT_BUGS_TO) < 0) |
310 | return NULL; | |
311 | return tp; | |
cbbcaf23 UD |
312 | default: |
313 | break; | |
314 | } | |
315 | return (char *) text; | |
316 | } | |
317 | ||
591e1ffb UD |
318 | /* Print the version information. */ |
319 | static void | |
320 | print_version (FILE *stream, struct argp_state *state) | |
321 | { | |
8b748aed | 322 | fprintf (stream, "ldconfig %s%s\n", PKGVERSION, VERSION); |
591e1ffb UD |
323 | fprintf (stream, gettext ("\ |
324 | Copyright (C) %s Free Software Foundation, Inc.\n\ | |
325 | This is free software; see the source for copying conditions. There is NO\n\ | |
326 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ | |
1979f3c1 | 327 | "), "2016"); |
591e1ffb UD |
328 | fprintf (stream, gettext ("Written by %s.\n"), |
329 | "Andreas Jaeger"); | |
330 | } | |
331 | ||
a8fd59b0 AJ |
332 | /* Add a single directory entry. */ |
333 | static void | |
334 | add_single_dir (struct dir_entry *entry, int verbose) | |
335 | { | |
336 | struct dir_entry *ptr, *prev; | |
337 | ||
338 | ptr = dir_entries; | |
339 | prev = ptr; | |
340 | while (ptr != NULL) | |
341 | { | |
342 | /* Check for duplicates. */ | |
4ceae915 | 343 | if (ptr->ino == entry->ino && ptr->dev == entry->dev) |
a8fd59b0 AJ |
344 | { |
345 | if (opt_verbose && verbose) | |
346 | error (0, 0, _("Path `%s' given more than once"), entry->path); | |
347 | /* Use the newer information. */ | |
348 | ptr->flag = entry->flag; | |
4ceae915 | 349 | free (entry->path); |
a8fd59b0 AJ |
350 | free (entry); |
351 | break; | |
352 | } | |
353 | prev = ptr; | |
354 | ptr = ptr->next; | |
355 | } | |
356 | /* Is this the first entry? */ | |
357 | if (ptr == NULL && dir_entries == NULL) | |
358 | dir_entries = entry; | |
359 | else if (ptr == NULL) | |
360 | prev->next = entry; | |
361 | } | |
362 | ||
591e1ffb UD |
363 | /* Add one directory to the list of directories to process. */ |
364 | static void | |
365 | add_dir (const char *line) | |
366 | { | |
591e1ffb | 367 | unsigned int i; |
539842a4 | 368 | struct dir_entry *entry = xmalloc (sizeof (struct dir_entry)); |
591e1ffb | 369 | entry->next = NULL; |
45eca4d1 | 370 | |
591e1ffb UD |
371 | /* Search for an '=' sign. */ |
372 | entry->path = xstrdup (line); | |
539842a4 | 373 | char *equal_sign = strchr (entry->path, '='); |
591e1ffb UD |
374 | if (equal_sign) |
375 | { | |
376 | *equal_sign = '\0'; | |
377 | ++equal_sign; | |
378 | entry->flag = FLAG_ANY; | |
a986484f | 379 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i) |
591e1ffb UD |
380 | if (strcmp (equal_sign, lib_types[i].name) == 0) |
381 | { | |
382 | entry->flag = lib_types[i].flag; | |
383 | break; | |
384 | } | |
385 | if (entry->flag == FLAG_ANY) | |
386 | error (0, 0, _("%s is not a known library type"), equal_sign); | |
387 | } | |
388 | else | |
389 | { | |
390 | entry->flag = FLAG_ANY; | |
391 | } | |
392 | ||
69acbe9f | 393 | /* Canonify path: for now only remove leading and trailing |
00ee369c AS |
394 | whitespace and the trailing slashes. */ |
395 | i = strlen (entry->path); | |
69acbe9f | 396 | |
00ee369c AS |
397 | while (i > 0 && isspace (entry->path[i - 1])) |
398 | entry->path[--i] = '\0'; | |
69acbe9f | 399 | |
00ee369c AS |
400 | while (i > 0 && entry->path[i - 1] == '/') |
401 | entry->path[--i] = '\0'; | |
402 | ||
403 | if (i == 0) | |
404 | return; | |
45eca4d1 | 405 | |
539842a4 UD |
406 | char *path = entry->path; |
407 | if (opt_chroot) | |
408 | path = chroot_canon (opt_chroot, path); | |
409 | ||
410 | struct stat64 stat_buf; | |
411 | if (path == NULL || stat64 (path, &stat_buf)) | |
4ceae915 | 412 | { |
8645ad47 AJ |
413 | if (opt_verbose) |
414 | error (0, errno, _("Can't stat %s"), entry->path); | |
4ceae915 AJ |
415 | free (entry->path); |
416 | free (entry); | |
4ceae915 | 417 | } |
539842a4 UD |
418 | else |
419 | { | |
420 | entry->ino = stat_buf.st_ino; | |
421 | entry->dev = stat_buf.st_dev; | |
4ceae915 | 422 | |
539842a4 UD |
423 | add_single_dir (entry, 1); |
424 | } | |
4ceae915 | 425 | |
539842a4 UD |
426 | if (opt_chroot) |
427 | free (path); | |
591e1ffb UD |
428 | } |
429 | ||
430 | ||
b4a555d6 UD |
431 | static int |
432 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
433 | { | |
434 | int ret; | |
435 | char *canon_path; | |
436 | ||
437 | if (!opt_chroot) | |
438 | return stat64 (real_path, st); | |
439 | ||
440 | ret = lstat64 (real_path, st); | |
441 | if (ret || !S_ISLNK (st->st_mode)) | |
442 | return ret; | |
443 | ||
444 | canon_path = chroot_canon (opt_chroot, path); | |
445 | if (canon_path == NULL) | |
446 | return -1; | |
447 | ||
448 | ret = stat64 (canon_path, st); | |
449 | free (canon_path); | |
450 | return ret; | |
451 | } | |
452 | ||
591e1ffb UD |
453 | /* Create a symbolic link from soname to libname in directory path. */ |
454 | static void | |
b4a555d6 UD |
455 | create_links (const char *real_path, const char *path, const char *libname, |
456 | const char *soname) | |
591e1ffb | 457 | { |
7b0d235c | 458 | char *full_libname, *full_soname; |
b4a555d6 UD |
459 | char *real_full_libname, *real_full_soname; |
460 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
461 | int do_link = 1; |
462 | int do_remove = 1; | |
463 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 464 | |
591e1ffb | 465 | /* Get complete path. */ |
7b0d235c | 466 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 467 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
468 | sprintf (full_libname, "%s/%s", path, libname); |
469 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
470 | if (opt_chroot) |
471 | { | |
472 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 473 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
474 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
475 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
476 | } | |
477 | else | |
478 | { | |
479 | real_full_libname = full_libname; | |
480 | real_full_soname = full_soname; | |
481 | } | |
591e1ffb UD |
482 | |
483 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 484 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 485 | { |
b4a555d6 | 486 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
487 | { |
488 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
489 | return; | |
490 | } | |
491 | if (stat_lib.st_dev == stat_so.st_dev | |
492 | && stat_lib.st_ino == stat_so.st_ino) | |
493 | /* Link is already correct. */ | |
494 | do_link = 0; | |
b4a555d6 | 495 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
496 | && !S_ISLNK (lstat_so.st_mode)) |
497 | { | |
498 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
499 | do_link = 0; | |
500 | do_remove = 0; | |
501 | } | |
502 | } | |
b4a555d6 | 503 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
504 | || !S_ISLNK (lstat_so.st_mode)) |
505 | /* Unless it is a stale symlink, there is no need to remove. */ | |
506 | do_remove = 0; | |
507 | ||
508 | if (opt_verbose) | |
509 | printf ("\t%s -> %s", soname, libname); | |
510 | ||
511 | if (do_link && opt_link) | |
512 | { | |
513 | /* Remove old link. */ | |
514 | if (do_remove) | |
b4a555d6 | 515 | if (unlink (real_full_soname)) |
591e1ffb UD |
516 | { |
517 | error (0, 0, _("Can't unlink %s"), full_soname); | |
518 | do_link = 0; | |
519 | } | |
520 | /* Create symbolic link. */ | |
b4a555d6 | 521 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
522 | { |
523 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
524 | do_link = 0; | |
525 | } | |
526 | if (opt_verbose) | |
527 | { | |
528 | if (do_link) | |
529 | fputs (_(" (changed)\n"), stdout); | |
530 | else | |
531 | fputs (_(" (SKIPPED)\n"), stdout); | |
532 | } | |
533 | } | |
534 | else if (opt_verbose) | |
535 | fputs ("\n", stdout); | |
536 | } | |
537 | ||
b85697f6 UD |
538 | /* Manually link the given library. */ |
539 | static void | |
540 | manual_link (char *library) | |
541 | { | |
542 | char *path; | |
b4a555d6 UD |
543 | char *real_path; |
544 | char *real_library; | |
b85697f6 UD |
545 | char *libname; |
546 | char *soname; | |
b4a555d6 | 547 | struct stat64 stat_buf; |
b85697f6 | 548 | int flag; |
a986484f | 549 | unsigned int osversion; |
b85697f6 UD |
550 | |
551 | /* Prepare arguments for create_links call. Split library name in | |
552 | directory and filename first. Since path is allocated, we've got | |
553 | to be careful to free at the end. */ | |
554 | path = xstrdup (library); | |
555 | libname = strrchr (path, '/'); | |
556 | ||
557 | if (libname) | |
558 | { | |
559 | /* Successfully split names. Check if path is just "/" to avoid | |
27d9ffda | 560 | an empty path. */ |
b85697f6 UD |
561 | if (libname == path) |
562 | { | |
563 | libname = library + 1; | |
564 | path = xrealloc (path, 2); | |
565 | strcpy (path, "/"); | |
566 | } | |
567 | else | |
568 | { | |
569 | *libname = '\0'; | |
570 | ++libname; | |
571 | } | |
572 | } | |
573 | else | |
574 | { | |
575 | /* There's no path, construct one. */ | |
576 | libname = library; | |
577 | path = xrealloc (path, 2); | |
578 | strcpy (path, "."); | |
579 | } | |
580 | ||
b4a555d6 UD |
581 | if (opt_chroot) |
582 | { | |
583 | real_path = chroot_canon (opt_chroot, path); | |
584 | if (real_path == NULL) | |
585 | { | |
586 | error (0, errno, _("Can't find %s"), path); | |
587 | free (path); | |
588 | return; | |
589 | } | |
590 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
591 | sprintf (real_library, "%s/%s", real_path, libname); | |
592 | } | |
593 | else | |
594 | { | |
595 | real_path = path; | |
596 | real_library = library; | |
597 | } | |
598 | ||
b85697f6 | 599 | /* Do some sanity checks first. */ |
b4a555d6 | 600 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 | 601 | { |
11bf311e | 602 | error (0, errno, _("Cannot lstat %s"), library); |
b85697f6 UD |
603 | free (path); |
604 | return; | |
605 | } | |
606 | /* We don't want links here! */ | |
607 | else if (!S_ISREG (stat_buf.st_mode)) | |
608 | { | |
609 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
610 | library); | |
611 | free (path); | |
612 | return; | |
613 | } | |
27d9ffda | 614 | |
a986484f | 615 | if (process_file (real_library, library, libname, &flag, &osversion, |
27d9ffda | 616 | &soname, 0, &stat_buf)) |
b85697f6 UD |
617 | { |
618 | error (0, 0, _("No link created since soname could not be found for %s"), | |
619 | library); | |
620 | free (path); | |
621 | return; | |
622 | } | |
27d9ffda UD |
623 | if (soname == NULL) |
624 | soname = implicit_soname (libname, flag); | |
b4a555d6 | 625 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
626 | free (soname); |
627 | free (path); | |
628 | } | |
629 | ||
630 | ||
591e1ffb UD |
631 | /* Read a whole directory and search for libraries. |
632 | The purpose is two-fold: | |
633 | - search for libraries which will be added to the cache | |
634 | - create symbolic links to the soname for each library | |
635 | ||
636 | This has to be done separatly for each directory. | |
45eca4d1 | 637 | |
591e1ffb UD |
638 | To keep track of which libraries to add to the cache and which |
639 | links to create, we save a list of all libraries. | |
640 | ||
641 | The algorithm is basically: | |
642 | for all libraries in the directory do | |
643 | get soname of library | |
644 | if soname is already in list | |
645 | if new library is newer, replace entry | |
646 | otherwise ignore this library | |
647 | otherwise add library to list | |
45eca4d1 | 648 | |
591e1ffb UD |
649 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
650 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
651 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
652 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
653 | libxy.so.1.1. */ | |
654 | ||
655 | /* Information for one library. */ | |
45eca4d1 | 656 | struct dlib_entry |
591e1ffb UD |
657 | { |
658 | char *name; | |
659 | char *soname; | |
660 | int flag; | |
661 | int is_link; | |
a986484f | 662 | unsigned int osversion; |
591e1ffb UD |
663 | struct dlib_entry *next; |
664 | }; | |
665 | ||
666 | ||
667 | static void | |
668 | search_dir (const struct dir_entry *entry) | |
669 | { | |
a6c1c03a | 670 | uint64_t hwcap = path_hwcap (entry->path); |
591e1ffb | 671 | if (opt_verbose) |
45eca4d1 UD |
672 | { |
673 | if (hwcap != 0) | |
ab1d521d | 674 | printf ("%s: (hwcap: %#.16" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
675 | else |
676 | printf ("%s:\n", entry->path); | |
677 | } | |
678 | ||
27d9ffda UD |
679 | char *dir_name; |
680 | char *real_file_name; | |
681 | size_t real_file_name_len; | |
682 | size_t file_name_len = PATH_MAX; | |
683 | char *file_name = alloca (file_name_len); | |
b4a555d6 UD |
684 | if (opt_chroot) |
685 | { | |
686 | dir_name = chroot_canon (opt_chroot, entry->path); | |
687 | real_file_name_len = PATH_MAX; | |
688 | real_file_name = alloca (real_file_name_len); | |
689 | } | |
690 | else | |
691 | { | |
692 | dir_name = entry->path; | |
693 | real_file_name_len = 0; | |
694 | real_file_name = file_name; | |
695 | } | |
696 | ||
27d9ffda | 697 | DIR *dir; |
b4a555d6 | 698 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) |
591e1ffb UD |
699 | { |
700 | if (opt_verbose) | |
701 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
702 | if (opt_chroot && dir_name) |
703 | free (dir_name); | |
591e1ffb UD |
704 | return; |
705 | } | |
45eca4d1 | 706 | |
27d9ffda UD |
707 | struct dirent64 *direntry; |
708 | struct dlib_entry *dlibs = NULL; | |
2b510e91 | 709 | while ((direntry = readdir64 (dir)) != NULL) |
591e1ffb UD |
710 | { |
711 | int flag; | |
712 | #ifdef _DIRENT_HAVE_D_TYPE | |
713 | /* We only look at links and regular files. */ | |
714 | if (direntry->d_type != DT_UNKNOWN | |
715 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
716 | && direntry->d_type != DT_REG |
717 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
718 | continue; |
719 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
720 | /* Does this file look like a shared library or is it a hwcap |
721 | subdirectory? The dynamic linker is also considered as | |
722 | shared library. */ | |
723 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
724 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
725 | || strstr (direntry->d_name, ".so") == NULL) | |
95ce33a5 UD |
726 | && ( |
727 | #ifdef _DIRENT_HAVE_D_TYPE | |
728 | direntry->d_type == DT_REG || | |
729 | #endif | |
730 | !is_hwcap_platform (direntry->d_name))) | |
591e1ffb | 731 | continue; |
27d9ffda UD |
732 | |
733 | size_t len = strlen (direntry->d_name); | |
3858bf28 RM |
734 | /* Skip temporary files created by the prelink program. Files with |
735 | names like these are never really DSOs we want to look at. */ | |
736 | if (len >= sizeof (".#prelink#") - 1) | |
737 | { | |
738 | if (strcmp (direntry->d_name + len - sizeof (".#prelink#") + 1, | |
739 | ".#prelink#") == 0) | |
740 | continue; | |
741 | if (len >= sizeof (".#prelink#.XXXXXX") - 1 | |
742 | && memcmp (direntry->d_name + len - sizeof (".#prelink#.XXXXXX") | |
743 | + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0) | |
744 | continue; | |
745 | } | |
30a3aa75 | 746 | len += strlen (entry->path) + 2; |
7b0d235c | 747 | if (len > file_name_len) |
591e1ffb | 748 | { |
30a3aa75 | 749 | file_name_len = len; |
7b0d235c | 750 | file_name = alloca (file_name_len); |
b4a555d6 UD |
751 | if (!opt_chroot) |
752 | real_file_name = file_name; | |
753 | } | |
754 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
755 | if (opt_chroot) | |
756 | { | |
30a3aa75 | 757 | len = strlen (dir_name) + strlen (direntry->d_name) + 2; |
b4a555d6 UD |
758 | if (len > real_file_name_len) |
759 | { | |
30a3aa75 | 760 | real_file_name_len = len; |
b4a555d6 UD |
761 | real_file_name = alloca (real_file_name_len); |
762 | } | |
763 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 764 | } |
27d9ffda UD |
765 | |
766 | struct stat64 lstat_buf; | |
7c3002f0 | 767 | #ifdef _DIRENT_HAVE_D_TYPE |
27d9ffda | 768 | /* We optimize and try to do the lstat call only if needed. */ |
7c3002f0 | 769 | if (direntry->d_type != DT_UNKNOWN) |
4ceae915 | 770 | lstat_buf.st_mode = DTTOIF (direntry->d_type); |
7c3002f0 UD |
771 | else |
772 | #endif | |
a1ffb40e | 773 | if (__glibc_unlikely (lstat64 (real_file_name, &lstat_buf))) |
7c3002f0 | 774 | { |
95ce33a5 | 775 | error (0, errno, _("Cannot lstat %s"), file_name); |
7c3002f0 UD |
776 | continue; |
777 | } | |
778 | ||
27d9ffda UD |
779 | struct stat64 stat_buf; |
780 | int is_dir; | |
781 | int is_link = S_ISLNK (lstat_buf.st_mode); | |
4ceae915 | 782 | if (is_link) |
27d9ffda | 783 | { |
4ceae915 AJ |
784 | /* In case of symlink, we check if the symlink refers to |
785 | a directory. */ | |
7dee2660 UD |
786 | char *target_name = real_file_name; |
787 | if (opt_chroot) | |
788 | { | |
789 | target_name = chroot_canon (opt_chroot, file_name); | |
790 | if (target_name == NULL) | |
791 | { | |
792 | if (strstr (file_name, ".so") == NULL) | |
793 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
794 | continue; | |
795 | } | |
796 | } | |
a1ffb40e | 797 | if (__glibc_unlikely (stat64 (target_name, &stat_buf))) |
4ceae915 | 798 | { |
8645ad47 | 799 | if (opt_verbose) |
95ce33a5 | 800 | error (0, errno, _("Cannot stat %s"), file_name); |
647eb037 UD |
801 | |
802 | /* Remove stale symlinks. */ | |
803 | if (strstr (direntry->d_name, ".so.")) | |
804 | unlink (real_file_name); | |
4ceae915 AJ |
805 | continue; |
806 | } | |
807 | is_dir = S_ISDIR (stat_buf.st_mode); | |
27d9ffda UD |
808 | |
809 | /* lstat_buf is later stored, update contents. */ | |
810 | lstat_buf.st_dev = stat_buf.st_dev; | |
811 | lstat_buf.st_ino = stat_buf.st_ino; | |
812 | lstat_buf.st_size = stat_buf.st_size; | |
813 | lstat_buf.st_ctime = stat_buf.st_ctime; | |
4ceae915 AJ |
814 | } |
815 | else | |
816 | is_dir = S_ISDIR (lstat_buf.st_mode); | |
817 | ||
818 | if (is_dir && is_hwcap_platform (direntry->d_name)) | |
45eca4d1 | 819 | { |
a8fd59b0 AJ |
820 | /* Handle subdirectory later. */ |
821 | struct dir_entry *new_entry; | |
822 | ||
823 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 824 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
825 | new_entry->flag = entry->flag; |
826 | new_entry->next = NULL; | |
27d9ffda UD |
827 | #ifdef _DIRENT_HAVE_D_TYPE |
828 | /* We have filled in lstat only #ifndef | |
829 | _DIRENT_HAVE_D_TYPE. Fill it in if needed. */ | |
830 | if (!is_link | |
831 | && direntry->d_type != DT_UNKNOWN | |
832 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
4ceae915 | 833 | { |
27d9ffda UD |
834 | error (0, errno, _("Cannot lstat %s"), file_name); |
835 | free (new_entry->path); | |
836 | free (new_entry); | |
837 | continue; | |
4ceae915 | 838 | } |
95ce33a5 | 839 | #endif |
27d9ffda UD |
840 | new_entry->ino = lstat_buf.st_ino; |
841 | new_entry->dev = lstat_buf.st_dev; | |
a8fd59b0 | 842 | add_single_dir (new_entry, 0); |
45eca4d1 UD |
843 | continue; |
844 | } | |
0f843f89 | 845 | else if (!S_ISREG (lstat_buf.st_mode) && !is_link) |
591e1ffb UD |
846 | continue; |
847 | ||
27d9ffda | 848 | char *real_name; |
b4a555d6 UD |
849 | if (opt_chroot && is_link) |
850 | { | |
851 | real_name = chroot_canon (opt_chroot, file_name); | |
852 | if (real_name == NULL) | |
853 | { | |
854 | if (strstr (file_name, ".so") == NULL) | |
855 | error (0, 0, _("Input file %s not found.\n"), file_name); | |
856 | continue; | |
857 | } | |
858 | } | |
859 | else | |
860 | real_name = real_file_name; | |
591e1ffb | 861 | |
27d9ffda UD |
862 | #ifdef _DIRENT_HAVE_D_TYPE |
863 | /* Call lstat64 if not done yet. */ | |
864 | if (!is_link | |
865 | && direntry->d_type != DT_UNKNOWN | |
866 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) | |
b4a555d6 | 867 | { |
27d9ffda | 868 | error (0, errno, _("Cannot lstat %s"), file_name); |
b4a555d6 UD |
869 | continue; |
870 | } | |
27d9ffda UD |
871 | #endif |
872 | ||
873 | /* First search whether the auxiliary cache contains this | |
874 | library already and it's not changed. */ | |
875 | char *soname; | |
876 | unsigned int osversion; | |
877 | if (!search_aux_cache (&lstat_buf, &flag, &osversion, &soname)) | |
878 | { | |
879 | if (process_file (real_name, file_name, direntry->d_name, &flag, | |
880 | &osversion, &soname, is_link, &lstat_buf)) | |
881 | { | |
882 | if (real_name != real_file_name) | |
883 | free (real_name); | |
884 | continue; | |
885 | } | |
886 | else if (opt_build_cache) | |
887 | add_to_aux_cache (&lstat_buf, flag, osversion, soname); | |
888 | } | |
b4a555d6 | 889 | |
27d9ffda UD |
890 | if (soname == NULL) |
891 | soname = implicit_soname (direntry->d_name, flag); | |
82d8607d UD |
892 | |
893 | /* A link may just point to itself. */ | |
591e1ffb UD |
894 | if (is_link) |
895 | { | |
97114a38 CD |
896 | /* If the path the link points to isn't its soname or it is not |
897 | the .so symlink for ld(1), we treat it as a normal file. | |
898 | ||
899 | You should always do this: | |
900 | ||
901 | libfoo.so -> SONAME -> Arbitrary package-chosen name. | |
902 | ||
903 | e.g. libfoo.so -> libfoo.so.1 -> libfooimp.so.9.99. | |
904 | Given a SONAME of libfoo.so.1. | |
905 | ||
906 | You should *never* do this: | |
907 | ||
908 | libfoo.so -> libfooimp.so.9.99 | |
909 | ||
910 | If you do, and your SONAME is libfoo.so.1, then libfoo.so | |
911 | fails to point at the SONAME. In that case ldconfig may consider | |
912 | libfoo.so as another implementation of SONAME and will create | |
913 | symlinks against it causing problems when you try to upgrade | |
914 | or downgrade. The problems will arise because ldconfig will, | |
915 | depending on directory ordering, creat symlinks against libfoo.so | |
916 | e.g. libfoo.so.1.2 -> libfoo.so, but when libfoo.so is removed | |
917 | (typically by the removal of a development pacakge not required | |
918 | for the runtime) it will break the libfoo.so.1.2 symlink and the | |
919 | application will fail to start. */ | |
2fe98a4a | 920 | const char *real_base_name = basename (real_file_name); |
82d8607d UD |
921 | |
922 | if (strcmp (real_base_name, soname) != 0) | |
923 | { | |
924 | len = strlen (real_base_name); | |
925 | if (len < strlen (".so") | |
926 | || strcmp (real_base_name + len - strlen (".so"), ".so") != 0 | |
927 | || strncmp (real_base_name, soname, len) != 0) | |
928 | is_link = 0; | |
929 | } | |
27d9ffda | 930 | } |
45eca4d1 | 931 | |
395412a0 UD |
932 | if (real_name != real_file_name) |
933 | free (real_name); | |
934 | ||
82d8607d UD |
935 | if (is_link) |
936 | { | |
937 | free (soname); | |
938 | soname = xstrdup (direntry->d_name); | |
939 | } | |
940 | ||
591e1ffb UD |
941 | if (flag == FLAG_ELF |
942 | && (entry->flag == FLAG_ELF_LIBC5 | |
943 | || entry->flag == FLAG_ELF_LIBC6)) | |
944 | flag = entry->flag; | |
27d9ffda | 945 | |
591e1ffb UD |
946 | /* Some sanity checks to print warnings. */ |
947 | if (opt_verbose) | |
948 | { | |
949 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
950 | && entry->flag != FLAG_ANY) | |
7b0d235c | 951 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
952 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
953 | && entry->flag != FLAG_ANY) | |
7b0d235c | 954 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
955 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
956 | && entry->flag != FLAG_ANY) | |
7b0d235c | 957 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 958 | } |
45eca4d1 | 959 | |
591e1ffb | 960 | /* Add library to list. */ |
27d9ffda | 961 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
962 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
963 | { | |
964 | /* Is soname already in list? */ | |
965 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
966 | { | |
967 | /* Prefer a file to a link, otherwise check which one | |
968 | is newer. */ | |
969 | if ((!is_link && dlib_ptr->is_link) | |
970 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 971 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
972 | { |
973 | /* It's newer - add it. */ | |
974 | /* Flag should be the same - sanity check. */ | |
975 | if (dlib_ptr->flag != flag) | |
976 | { | |
977 | if (dlib_ptr->flag == FLAG_ELF | |
978 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
979 | dlib_ptr->flag = flag; | |
980 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
981 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
982 | && flag == FLAG_ELF) | |
983 | dlib_ptr->flag = flag; | |
984 | else | |
985 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
27d9ffda UD |
986 | dlib_ptr->name, direntry->d_name, |
987 | entry->path); | |
591e1ffb UD |
988 | } |
989 | free (dlib_ptr->name); | |
990 | dlib_ptr->name = xstrdup (direntry->d_name); | |
991 | dlib_ptr->is_link = is_link; | |
27d9ffda | 992 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
993 | } |
994 | /* Don't add this library, abort loop. */ | |
995 | /* Also free soname, since it's dynamically allocated. */ | |
996 | free (soname); | |
997 | break; | |
998 | } | |
999 | } | |
1000 | /* Add the library if it's not already in. */ | |
1001 | if (dlib_ptr == NULL) | |
1002 | { | |
1003 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
1004 | dlib_ptr->name = xstrdup (direntry->d_name); | |
591e1ffb | 1005 | dlib_ptr->soname = soname; |
27d9ffda | 1006 | dlib_ptr->flag = flag; |
591e1ffb | 1007 | dlib_ptr->is_link = is_link; |
27d9ffda | 1008 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
1009 | /* Add at head of list. */ |
1010 | dlib_ptr->next = dlibs; | |
1011 | dlibs = dlib_ptr; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | closedir (dir); | |
1016 | ||
1017 | /* Now dlibs contains a list of all libs - add those to the cache | |
1018 | and created all symbolic links. */ | |
27d9ffda | 1019 | struct dlib_entry *dlib_ptr; |
591e1ffb UD |
1020 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) |
1021 | { | |
1022 | /* Don't create links to links. */ | |
1023 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
1024 | create_links (dir_name, entry->path, dlib_ptr->name, |
1025 | dlib_ptr->soname); | |
591e1ffb | 1026 | if (opt_build_cache) |
a986484f UD |
1027 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
1028 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
1029 | } |
1030 | ||
1031 | /* Free all resources. */ | |
45eca4d1 | 1032 | while (dlibs) |
591e1ffb UD |
1033 | { |
1034 | dlib_ptr = dlibs; | |
1035 | free (dlib_ptr->soname); | |
1036 | free (dlib_ptr->name); | |
1037 | dlibs = dlibs->next; | |
1038 | free (dlib_ptr); | |
1039 | } | |
b4a555d6 UD |
1040 | |
1041 | if (opt_chroot && dir_name) | |
1042 | free (dir_name); | |
591e1ffb UD |
1043 | } |
1044 | ||
1045 | /* Search through all libraries. */ | |
1046 | static void | |
1047 | search_dirs (void) | |
1048 | { | |
1049 | struct dir_entry *entry; | |
1050 | ||
1051 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
1052 | search_dir (entry); | |
1053 | ||
1054 | /* Free all allocated memory. */ | |
1055 | while (dir_entries) | |
1056 | { | |
1057 | entry = dir_entries; | |
1058 | dir_entries = dir_entries->next; | |
1059 | free (entry->path); | |
1060 | free (entry); | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | ||
8e115d80 | 1065 | static void parse_conf_include (const char *config_file, unsigned int lineno, |
a334319f | 1066 | bool do_chroot, const char *pattern); |
8e115d80 | 1067 | |
591e1ffb UD |
1068 | /* Parse configuration file. */ |
1069 | static void | |
a334319f | 1070 | parse_conf (const char *filename, bool do_chroot) |
591e1ffb | 1071 | { |
b4a555d6 | 1072 | FILE *file = NULL; |
591e1ffb | 1073 | char *line = NULL; |
b4a555d6 | 1074 | const char *canon; |
591e1ffb | 1075 | size_t len = 0; |
8e115d80 | 1076 | unsigned int lineno; |
45eca4d1 | 1077 | |
8e115d80 | 1078 | if (do_chroot && opt_chroot) |
b4a555d6 UD |
1079 | { |
1080 | canon = chroot_canon (opt_chroot, filename); | |
1081 | if (canon) | |
1082 | file = fopen (canon, "r"); | |
1083 | else | |
1084 | canon = filename; | |
1085 | } | |
1086 | else | |
1087 | { | |
1088 | canon = filename; | |
1089 | file = fopen (filename, "r"); | |
1090 | } | |
591e1ffb UD |
1091 | |
1092 | if (file == NULL) | |
1093 | { | |
1db86e88 AJ |
1094 | error (0, errno, _("\ |
1095 | Warning: ignoring configuration file that cannot be opened: %s"), | |
1096 | canon); | |
b4a555d6 UD |
1097 | if (canon != filename) |
1098 | free ((char *) canon); | |
591e1ffb UD |
1099 | return; |
1100 | } | |
1101 | ||
c96873d7 UD |
1102 | /* No threads use this stream. */ |
1103 | __fsetlocking (file, FSETLOCKING_BYCALLER); | |
1104 | ||
b4a555d6 UD |
1105 | if (canon != filename) |
1106 | free ((char *) canon); | |
1107 | ||
8e115d80 | 1108 | lineno = 0; |
591e1ffb UD |
1109 | do |
1110 | { | |
1111 | ssize_t n = getline (&line, &len, file); | |
1112 | if (n < 0) | |
1113 | break; | |
1114 | ||
8e115d80 | 1115 | ++lineno; |
591e1ffb UD |
1116 | if (line[n - 1] == '\n') |
1117 | line[n - 1] = '\0'; | |
1118 | ||
1119 | /* Because the file format does not know any form of quoting we | |
1120 | can search forward for the next '#' character and if found | |
1121 | make it terminating the line. */ | |
1122 | *strchrnul (line, '#') = '\0'; | |
1123 | ||
69acbe9f UD |
1124 | /* Remove leading whitespace. NUL is no whitespace character. */ |
1125 | char *cp = line; | |
1126 | while (isspace (*cp)) | |
1127 | ++cp; | |
1128 | ||
591e1ffb | 1129 | /* If the line is blank it is ignored. */ |
69acbe9f | 1130 | if (cp[0] == '\0') |
591e1ffb UD |
1131 | continue; |
1132 | ||
8e115d80 RM |
1133 | if (!strncmp (cp, "include", 7) && isblank (cp[7])) |
1134 | { | |
1135 | char *dir; | |
1136 | cp += 8; | |
1137 | while ((dir = strsep (&cp, " \t")) != NULL) | |
1138 | if (dir[0] != '\0') | |
a334319f | 1139 | parse_conf_include (filename, lineno, do_chroot, dir); |
8e115d80 | 1140 | } |
ab1d521d RM |
1141 | else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5])) |
1142 | { | |
1143 | cp += 6; | |
1144 | char *p, *name = NULL; | |
1145 | unsigned long int n = strtoul (cp, &cp, 0); | |
1146 | if (cp != NULL && isblank (*cp)) | |
1147 | while ((p = strsep (&cp, " \t")) != NULL) | |
1148 | if (p[0] != '\0') | |
1149 | { | |
1150 | if (name == NULL) | |
1151 | name = p; | |
1152 | else | |
1153 | { | |
1154 | name = NULL; | |
1155 | break; | |
1156 | } | |
1157 | } | |
1158 | if (name == NULL) | |
1159 | { | |
1160 | error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"), | |
1161 | filename, lineno); | |
1162 | break; | |
1163 | } | |
1164 | if (n >= (64 - _DL_FIRST_EXTRA)) | |
1165 | error (EXIT_FAILURE, 0, | |
1166 | _("%s:%u: hwcap index %lu above maximum %u"), | |
1167 | filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1); | |
1168 | if (hwcap_extra[n] == NULL) | |
1169 | { | |
1170 | for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h) | |
1171 | if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h])) | |
1172 | error (EXIT_FAILURE, 0, | |
1173 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1174 | filename, lineno, h, name); | |
1175 | hwcap_extra[n] = xstrdup (name); | |
1176 | } | |
1177 | else | |
1178 | { | |
1179 | if (strcmp (name, hwcap_extra[n])) | |
1180 | error (EXIT_FAILURE, 0, | |
1181 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1182 | filename, lineno, n, hwcap_extra[n]); | |
1183 | if (opt_verbose) | |
1184 | error (0, 0, _("%s:%u: duplicate hwcap %lu %s"), | |
1185 | filename, lineno, n, name); | |
1186 | } | |
1187 | } | |
8e115d80 RM |
1188 | else |
1189 | add_dir (cp); | |
69acbe9f UD |
1190 | } |
1191 | while (!feof_unlocked (file)); | |
591e1ffb UD |
1192 | |
1193 | /* Free buffer and close file. */ | |
1194 | free (line); | |
1195 | fclose (file); | |
1196 | } | |
1197 | ||
8e115d80 RM |
1198 | /* Handle one word in an `include' line, a glob pattern of additional |
1199 | config files to read. */ | |
1200 | static void | |
1201 | parse_conf_include (const char *config_file, unsigned int lineno, | |
a334319f | 1202 | bool do_chroot, const char *pattern) |
8e115d80 RM |
1203 | { |
1204 | if (opt_chroot && pattern[0] != '/') | |
1205 | error (EXIT_FAILURE, 0, | |
1206 | _("need absolute file name for configuration file when using -r")); | |
1207 | ||
1208 | char *copy = NULL; | |
1209 | if (pattern[0] != '/' && strchr (config_file, '/') != NULL) | |
1210 | { | |
322861e8 UD |
1211 | if (asprintf (©, "%s/%s", dirname (strdupa (config_file)), |
1212 | pattern) < 0) | |
1213 | error (EXIT_FAILURE, 0, _("memory exhausted")); | |
8e115d80 RM |
1214 | pattern = copy; |
1215 | } | |
1216 | ||
1217 | glob64_t gl; | |
1218 | int result; | |
1219 | if (do_chroot && opt_chroot) | |
1220 | { | |
1221 | char *canon = chroot_canon (opt_chroot, pattern); | |
49bd556d UD |
1222 | if (canon == NULL) |
1223 | return; | |
1224 | result = glob64 (canon, 0, NULL, &gl); | |
8e115d80 RM |
1225 | free (canon); |
1226 | } | |
1227 | else | |
1228 | result = glob64 (pattern, 0, NULL, &gl); | |
1229 | ||
1230 | switch (result) | |
1231 | { | |
1232 | case 0: | |
1233 | for (size_t i = 0; i < gl.gl_pathc; ++i) | |
a334319f | 1234 | parse_conf (gl.gl_pathv[i], false); |
8e115d80 RM |
1235 | globfree64 (&gl); |
1236 | break; | |
1237 | ||
1238 | case GLOB_NOMATCH: | |
1239 | break; | |
1240 | ||
1241 | case GLOB_NOSPACE: | |
1242 | errno = ENOMEM; | |
1243 | case GLOB_ABORTED: | |
1244 | if (opt_verbose) | |
1245 | error (0, errno, _("%s:%u: cannot read directory %s"), | |
1246 | config_file, lineno, pattern); | |
1247 | break; | |
1248 | ||
1249 | default: | |
1250 | abort (); | |
1251 | break; | |
1252 | } | |
1253 | ||
72e6cdfa | 1254 | free (copy); |
8e115d80 RM |
1255 | } |
1256 | ||
0cfbb8c6 UD |
1257 | /* Honour LD_HWCAP_MASK. */ |
1258 | static void | |
1259 | set_hwcap (void) | |
1260 | { | |
1261 | char *mask = getenv ("LD_HWCAP_MASK"); | |
1262 | ||
1263 | if (mask) | |
1264 | hwcap_mask = strtoul (mask, NULL, 0); | |
1265 | } | |
1266 | ||
591e1ffb UD |
1267 | |
1268 | int | |
1269 | main (int argc, char **argv) | |
1270 | { | |
11bf311e UD |
1271 | /* Set locale via LC_ALL. */ |
1272 | setlocale (LC_ALL, ""); | |
1273 | ||
1274 | /* Set the text message domain. */ | |
1275 | textdomain (_libc_intl_domainname); | |
45eca4d1 | 1276 | |
591e1ffb | 1277 | /* Parse and process arguments. */ |
11bf311e | 1278 | int remaining; |
591e1ffb UD |
1279 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); |
1280 | ||
11bf8ce1 | 1281 | /* Remaining arguments are additional directories if opt_manual_link |
b85697f6 UD |
1282 | is not set. */ |
1283 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
1284 | { |
1285 | int i; | |
1286 | for (i = remaining; i < argc; ++i) | |
11bf8ce1 UD |
1287 | if (opt_build_cache && argv[i][0] != '/') |
1288 | error (EXIT_FAILURE, 0, | |
1289 | _("relative path `%s' used to build cache"), | |
1290 | argv[i]); | |
1291 | else | |
1292 | add_dir (argv[i]); | |
591e1ffb UD |
1293 | } |
1294 | ||
13e23af7 CD |
1295 | /* The last entry in hwcap_extra is reserved for the "tls" pseudo-hwcap which |
1296 | indicates support for TLS. This pseudo-hwcap is only used by old versions | |
1297 | under which TLS support was optional. The entry is no longer needed, but | |
1298 | must remain for compatibility. */ | |
ab1d521d | 1299 | hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls"; |
ab1d521d | 1300 | |
0cfbb8c6 UD |
1301 | set_hwcap (); |
1302 | ||
591e1ffb UD |
1303 | if (opt_chroot) |
1304 | { | |
f0189a54 | 1305 | /* Normalize the path a bit, we might need it for printing later. */ |
616d9133 | 1306 | char *endp = rawmemchr (opt_chroot, '\0'); |
b4a555d6 | 1307 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
1308 | --endp; |
1309 | *endp = '\0'; | |
b4a555d6 UD |
1310 | if (endp == opt_chroot) |
1311 | opt_chroot = NULL; | |
f0189a54 | 1312 | |
b4a555d6 UD |
1313 | if (opt_chroot) |
1314 | { | |
1315 | /* It is faster to use chroot if we can. */ | |
1316 | if (!chroot (opt_chroot)) | |
1317 | { | |
1318 | if (chdir ("/")) | |
1319 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
1320 | opt_chroot = NULL; | |
1321 | } | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | if (cache_file == NULL) | |
1326 | { | |
1327 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
1328 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
1329 | } |
1330 | ||
b4a555d6 UD |
1331 | if (config_file == NULL) |
1332 | config_file = LD_SO_CONF; | |
1333 | ||
591e1ffb UD |
1334 | if (opt_print_cache) |
1335 | { | |
b4a555d6 UD |
1336 | if (opt_chroot) |
1337 | { | |
1338 | char *p = chroot_canon (opt_chroot, cache_file); | |
1339 | if (p == NULL) | |
1340 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1341 | cache_file); | |
1342 | cache_file = p; | |
1343 | } | |
591e1ffb | 1344 | print_cache (cache_file); |
b4a555d6 UD |
1345 | if (opt_chroot) |
1346 | free (cache_file); | |
591e1ffb UD |
1347 | exit (0); |
1348 | } | |
1349 | ||
b4a555d6 UD |
1350 | if (opt_chroot) |
1351 | { | |
1352 | /* Canonicalize the directory name of cache_file, not cache_file, | |
27d9ffda | 1353 | because we'll rename a temporary cache file to it. */ |
b4a555d6 UD |
1354 | char *p = strrchr (cache_file, '/'); |
1355 | char *canon = chroot_canon (opt_chroot, | |
1356 | p ? (*p = '\0', cache_file) : "/"); | |
1357 | ||
1358 | if (canon == NULL) | |
4bc2bcba UD |
1359 | error (EXIT_FAILURE, errno, |
1360 | _("Can't open cache file directory %s\n"), | |
1361 | p ? cache_file : "/"); | |
b4a555d6 UD |
1362 | |
1363 | if (p) | |
1364 | ++p; | |
1365 | else | |
1366 | p = cache_file; | |
1367 | ||
1368 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
1369 | sprintf (cache_file, "%s/%s", canon, p); | |
1370 | free (canon); | |
1371 | } | |
1372 | ||
b85697f6 UD |
1373 | if (opt_manual_link) |
1374 | { | |
1375 | /* Link all given libraries manually. */ | |
1376 | int i; | |
1377 | ||
1378 | for (i = remaining; i < argc; ++i) | |
a986484f | 1379 | manual_link (argv[i]); |
b85697f6 UD |
1380 | |
1381 | exit (0); | |
1382 | } | |
45eca4d1 UD |
1383 | |
1384 | ||
591e1ffb UD |
1385 | if (opt_build_cache) |
1386 | init_cache (); | |
1387 | ||
1388 | if (!opt_only_cline) | |
1389 | { | |
a334319f | 1390 | parse_conf (config_file, true); |
334fcf2a | 1391 | |
591e1ffb | 1392 | /* Always add the standard search paths. */ |
bd89c0b5 | 1393 | add_system_dir (SLIBDIR); |
8ca91b36 | 1394 | if (strcmp (SLIBDIR, LIBDIR)) |
bd89c0b5 | 1395 | add_system_dir (LIBDIR); |
591e1ffb | 1396 | } |
45eca4d1 | 1397 | |
3f7dcb2b | 1398 | const char *aux_cache_file = _PATH_LDCONFIG_AUX_CACHE; |
4bc2bcba | 1399 | if (opt_chroot) |
6db52fbb | 1400 | aux_cache_file = chroot_canon (opt_chroot, aux_cache_file); |
4bc2bcba | 1401 | |
6db52fbb | 1402 | if (! opt_ignore_aux_cache && aux_cache_file) |
4bc2bcba | 1403 | load_aux_cache (aux_cache_file); |
27d9ffda UD |
1404 | else |
1405 | init_aux_cache (); | |
1406 | ||
591e1ffb UD |
1407 | search_dirs (); |
1408 | ||
1409 | if (opt_build_cache) | |
27d9ffda UD |
1410 | { |
1411 | save_cache (cache_file); | |
6db52fbb | 1412 | if (aux_cache_file) |
c0dafcf1 | 1413 | save_aux_cache (aux_cache_file); |
27d9ffda | 1414 | } |
591e1ffb UD |
1415 | |
1416 | return 0; | |
1417 | } |