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Commit | Line | Data |
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1b85ed0c | 1 | /* Copyright (C) 1999-2004, 2005 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 | ||
a334319f UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
591e1ffb | 9 | |
a334319f | 10 | The GNU C Library is distributed in the hope that it will be useful, |
591e1ffb | 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
a334319f UD |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. | |
591e1ffb | 14 | |
a334319f UD |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
591e1ffb | 19 | |
ee600e3f | 20 | #define PROCINFO_CLASS static |
7b0d235c | 21 | #include <alloca.h> |
591e1ffb UD |
22 | #include <argp.h> |
23 | #include <dirent.h> | |
9c95d361 | 24 | #include <elf.h> |
591e1ffb UD |
25 | #include <error.h> |
26 | #include <errno.h> | |
5a35dfca | 27 | #include <inttypes.h> |
591e1ffb | 28 | #include <libintl.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 | |
a334319f UD |
42 | #include "ldconfig.h" |
43 | #include "dl-cache.h" | |
591e1ffb | 44 | |
a334319f | 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 | |
591e1ffb | 115 | /* Cache file to use. */ |
b4a555d6 | 116 | static char *cache_file; |
591e1ffb UD |
117 | |
118 | /* Configuration file. */ | |
119 | static const char *config_file; | |
120 | ||
0cfbb8c6 UD |
121 | /* Mask to use for important hardware capabilities. */ |
122 | static unsigned long int hwcap_mask = HWCAP_IMPORTANT; | |
123 | ||
ab1d521d RM |
124 | /* Configuration-defined capabilities defined in kernel vDSOs. */ |
125 | static const char *hwcap_extra[64 - _DL_FIRST_EXTRA]; | |
126 | ||
591e1ffb UD |
127 | /* Name and version of program. */ |
128 | static void print_version (FILE *stream, struct argp_state *state); | |
129 | void (*argp_program_version_hook) (FILE *, struct argp_state *) | |
130 | = print_version; | |
131 | ||
132 | /* Definitions of arguments for argp functions. */ | |
133 | static const struct argp_option options[] = | |
134 | { | |
135 | { "print-cache", 'p', NULL, 0, N_("Print cache"), 0}, | |
136 | { "verbose", 'v', NULL, 0, N_("Generate verbose messages"), 0}, | |
137 | { NULL, 'N', NULL, 0, N_("Don't build cache"), 0}, | |
138 | { NULL, 'X', NULL, 0, N_("Don't generate links"), 0}, | |
7864c09b UD |
139 | { NULL, 'r', N_("ROOT"), 0, N_("Change to and use ROOT as root directory"), 0}, |
140 | { NULL, 'C', N_("CACHE"), 0, N_("Use CACHE as cache file"), 0}, | |
141 | { NULL, 'f', N_("CONF"), 0, N_("Use CONF as configuration file"), 0}, | |
591e1ffb | 142 | { NULL, 'n', NULL, 0, N_("Only process directories specified on the command line. Don't build cache."), 0}, |
b85697f6 | 143 | { NULL, 'l', NULL, 0, N_("Manually link individual libraries."), 0}, |
7864c09b | 144 | { "format", 'c', N_("FORMAT"), 0, N_("Format to use: new, old or compat (default)"), 0}, |
591e1ffb UD |
145 | { NULL, 0, NULL, 0, NULL, 0 } |
146 | }; | |
147 | ||
11bf8ce1 UD |
148 | #define PROCINFO_CLASS static |
149 | #include <dl-procinfo.c> | |
150 | ||
591e1ffb UD |
151 | /* Short description of program. */ |
152 | static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings."); | |
153 | ||
154 | /* Prototype for option handler. */ | |
155 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
156 | ||
157 | /* Data structure to communicate with argp functions. */ | |
158 | static struct argp argp = | |
159 | { | |
160 | options, parse_opt, NULL, doc, NULL, NULL, NULL | |
161 | }; | |
162 | ||
a6c1c03a AJ |
163 | /* Check if string corresponds to an important hardware capability or |
164 | a platform. */ | |
45eca4d1 | 165 | static int |
a6c1c03a | 166 | is_hwcap_platform (const char *name) |
45eca4d1 UD |
167 | { |
168 | int hwcap_idx = _dl_string_hwcap (name); | |
8ca91b36 | 169 | |
0cfbb8c6 | 170 | if (hwcap_idx != -1 && ((1 << hwcap_idx) & hwcap_mask)) |
45eca4d1 | 171 | return 1; |
a6c1c03a AJ |
172 | |
173 | hwcap_idx = _dl_string_platform (name); | |
174 | if (hwcap_idx != -1) | |
175 | return 1; | |
176 | ||
ab1d521d RM |
177 | for (hwcap_idx = _DL_FIRST_EXTRA; hwcap_idx < 64; ++hwcap_idx) |
178 | if (hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA] != NULL | |
179 | && !strcmp (name, hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA])) | |
180 | return 1; | |
676fde70 | 181 | |
45eca4d1 UD |
182 | return 0; |
183 | } | |
184 | ||
a6c1c03a AJ |
185 | /* Get hwcap (including platform) encoding of path. */ |
186 | static uint64_t | |
45eca4d1 UD |
187 | path_hwcap (const char *path) |
188 | { | |
189 | char *str = xstrdup (path); | |
190 | char *ptr; | |
a6c1c03a AJ |
191 | uint64_t hwcap = 0; |
192 | uint64_t h; | |
45eca4d1 UD |
193 | |
194 | size_t len; | |
195 | ||
196 | len = strlen (str); | |
197 | if (str[len] == '/') | |
198 | str[len] = '\0'; | |
199 | ||
200 | /* Search pathname from the end and check for hwcap strings. */ | |
201 | for (;;) | |
202 | { | |
203 | ptr = strrchr (str, '/'); | |
204 | ||
205 | if (ptr == NULL) | |
206 | break; | |
207 | ||
a6c1c03a | 208 | h = _dl_string_hwcap (ptr + 1); |
45eca4d1 | 209 | |
59553897 UD |
210 | if (h == (uint64_t) -1) |
211 | { | |
212 | h = _dl_string_platform (ptr + 1); | |
213 | if (h == (uint64_t) -1) | |
676fde70 | 214 | { |
ab1d521d RM |
215 | for (h = _DL_FIRST_EXTRA; h < 64; ++h) |
216 | if (hwcap_extra[h - _DL_FIRST_EXTRA] != NULL | |
217 | && !strcmp (ptr + 1, hwcap_extra[h - _DL_FIRST_EXTRA])) | |
218 | break; | |
219 | if (h == 64) | |
676fde70 UD |
220 | break; |
221 | } | |
59553897 | 222 | } |
a6c1c03a | 223 | hwcap += 1ULL << h; |
591e1ffb | 224 | |
45eca4d1 UD |
225 | /* Search the next part of the path. */ |
226 | *ptr = '\0'; | |
227 | } | |
228 | ||
229 | free (str); | |
230 | return hwcap; | |
231 | } | |
591e1ffb UD |
232 | |
233 | /* Handle program arguments. */ | |
234 | static error_t | |
235 | parse_opt (int key, char *arg, struct argp_state *state) | |
236 | { | |
237 | switch (key) | |
238 | { | |
239 | case 'C': | |
240 | cache_file = arg; | |
241 | break; | |
242 | case 'f': | |
243 | config_file = arg; | |
244 | break; | |
b85697f6 UD |
245 | case 'l': |
246 | opt_manual_link = 1; | |
247 | break; | |
591e1ffb UD |
248 | case 'N': |
249 | opt_build_cache = 0; | |
250 | break; | |
251 | case 'n': | |
252 | opt_build_cache = 0; | |
253 | opt_only_cline = 1; | |
254 | break; | |
255 | case 'p': | |
256 | opt_print_cache = 1; | |
257 | break; | |
258 | case 'r': | |
259 | opt_chroot = arg; | |
260 | break; | |
261 | case 'v': | |
262 | opt_verbose = 1; | |
263 | break; | |
264 | case 'X': | |
265 | opt_link = 0; | |
266 | break; | |
45eca4d1 UD |
267 | case 'c': |
268 | if (strcmp (arg, "old") == 0) | |
269 | opt_format = 0; | |
270 | else if (strcmp (arg, "compat") == 0) | |
271 | opt_format = 1; | |
272 | else if (strcmp (arg, "new") == 0) | |
273 | opt_format = 2; | |
274 | break; | |
591e1ffb UD |
275 | default: |
276 | return ARGP_ERR_UNKNOWN; | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | /* Print the version information. */ | |
283 | static void | |
284 | print_version (FILE *stream, struct argp_state *state) | |
285 | { | |
286 | fprintf (stream, "ldconfig (GNU %s) %s\n", PACKAGE, VERSION); | |
287 | fprintf (stream, gettext ("\ | |
288 | Copyright (C) %s Free Software Foundation, Inc.\n\ | |
289 | This is free software; see the source for copying conditions. There is NO\n\ | |
290 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ | |
1b85ed0c | 291 | "), "2005"); |
591e1ffb UD |
292 | fprintf (stream, gettext ("Written by %s.\n"), |
293 | "Andreas Jaeger"); | |
294 | } | |
295 | ||
a8fd59b0 AJ |
296 | /* Add a single directory entry. */ |
297 | static void | |
298 | add_single_dir (struct dir_entry *entry, int verbose) | |
299 | { | |
300 | struct dir_entry *ptr, *prev; | |
301 | ||
302 | ptr = dir_entries; | |
303 | prev = ptr; | |
304 | while (ptr != NULL) | |
305 | { | |
306 | /* Check for duplicates. */ | |
4ceae915 | 307 | if (ptr->ino == entry->ino && ptr->dev == entry->dev) |
a8fd59b0 AJ |
308 | { |
309 | if (opt_verbose && verbose) | |
310 | error (0, 0, _("Path `%s' given more than once"), entry->path); | |
311 | /* Use the newer information. */ | |
312 | ptr->flag = entry->flag; | |
4ceae915 | 313 | free (entry->path); |
a8fd59b0 AJ |
314 | free (entry); |
315 | break; | |
316 | } | |
317 | prev = ptr; | |
318 | ptr = ptr->next; | |
319 | } | |
320 | /* Is this the first entry? */ | |
321 | if (ptr == NULL && dir_entries == NULL) | |
322 | dir_entries = entry; | |
323 | else if (ptr == NULL) | |
324 | prev->next = entry; | |
325 | } | |
326 | ||
591e1ffb UD |
327 | /* Add one directory to the list of directories to process. */ |
328 | static void | |
329 | add_dir (const char *line) | |
330 | { | |
591e1ffb | 331 | unsigned int i; |
539842a4 | 332 | struct dir_entry *entry = xmalloc (sizeof (struct dir_entry)); |
591e1ffb | 333 | entry->next = NULL; |
45eca4d1 | 334 | |
591e1ffb UD |
335 | /* Search for an '=' sign. */ |
336 | entry->path = xstrdup (line); | |
539842a4 | 337 | char *equal_sign = strchr (entry->path, '='); |
591e1ffb UD |
338 | if (equal_sign) |
339 | { | |
340 | *equal_sign = '\0'; | |
341 | ++equal_sign; | |
342 | entry->flag = FLAG_ANY; | |
a986484f | 343 | for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i) |
591e1ffb UD |
344 | if (strcmp (equal_sign, lib_types[i].name) == 0) |
345 | { | |
346 | entry->flag = lib_types[i].flag; | |
347 | break; | |
348 | } | |
349 | if (entry->flag == FLAG_ANY) | |
350 | error (0, 0, _("%s is not a known library type"), equal_sign); | |
351 | } | |
352 | else | |
353 | { | |
354 | entry->flag = FLAG_ANY; | |
355 | } | |
356 | ||
69acbe9f UD |
357 | /* Canonify path: for now only remove leading and trailing |
358 | whitespace and the trailing slashes slashes. */ | |
591e1ffb | 359 | i = strlen (entry->path) - 1; |
69acbe9f UD |
360 | |
361 | while (isspace (entry->path[i]) && i > 0) | |
362 | entry->path[i--] = '\0'; | |
363 | ||
591e1ffb | 364 | while (entry->path[i] == '/' && i > 0) |
69acbe9f | 365 | entry->path[i--] = '\0'; |
45eca4d1 | 366 | |
539842a4 UD |
367 | char *path = entry->path; |
368 | if (opt_chroot) | |
369 | path = chroot_canon (opt_chroot, path); | |
370 | ||
371 | struct stat64 stat_buf; | |
372 | if (path == NULL || stat64 (path, &stat_buf)) | |
4ceae915 | 373 | { |
8645ad47 AJ |
374 | if (opt_verbose) |
375 | error (0, errno, _("Can't stat %s"), entry->path); | |
4ceae915 AJ |
376 | free (entry->path); |
377 | free (entry); | |
4ceae915 | 378 | } |
539842a4 UD |
379 | else |
380 | { | |
381 | entry->ino = stat_buf.st_ino; | |
382 | entry->dev = stat_buf.st_dev; | |
4ceae915 | 383 | |
539842a4 UD |
384 | add_single_dir (entry, 1); |
385 | } | |
4ceae915 | 386 | |
539842a4 UD |
387 | if (opt_chroot) |
388 | free (path); | |
591e1ffb UD |
389 | } |
390 | ||
391 | ||
b4a555d6 UD |
392 | static int |
393 | chroot_stat (const char *real_path, const char *path, struct stat64 *st) | |
394 | { | |
395 | int ret; | |
396 | char *canon_path; | |
397 | ||
398 | if (!opt_chroot) | |
399 | return stat64 (real_path, st); | |
400 | ||
401 | ret = lstat64 (real_path, st); | |
402 | if (ret || !S_ISLNK (st->st_mode)) | |
403 | return ret; | |
404 | ||
405 | canon_path = chroot_canon (opt_chroot, path); | |
406 | if (canon_path == NULL) | |
407 | return -1; | |
408 | ||
409 | ret = stat64 (canon_path, st); | |
410 | free (canon_path); | |
411 | return ret; | |
412 | } | |
413 | ||
591e1ffb UD |
414 | /* Create a symbolic link from soname to libname in directory path. */ |
415 | static void | |
b4a555d6 UD |
416 | create_links (const char *real_path, const char *path, const char *libname, |
417 | const char *soname) | |
591e1ffb | 418 | { |
7b0d235c | 419 | char *full_libname, *full_soname; |
b4a555d6 UD |
420 | char *real_full_libname, *real_full_soname; |
421 | struct stat64 stat_lib, stat_so, lstat_so; | |
591e1ffb UD |
422 | int do_link = 1; |
423 | int do_remove = 1; | |
424 | /* XXX: The logics in this function should be simplified. */ | |
45eca4d1 | 425 | |
591e1ffb | 426 | /* Get complete path. */ |
7b0d235c | 427 | full_libname = alloca (strlen (path) + strlen (libname) + 2); |
7c545dbe | 428 | full_soname = alloca (strlen (path) + strlen (soname) + 2); |
7b0d235c AJ |
429 | sprintf (full_libname, "%s/%s", path, libname); |
430 | sprintf (full_soname, "%s/%s", path, soname); | |
b4a555d6 UD |
431 | if (opt_chroot) |
432 | { | |
433 | real_full_libname = alloca (strlen (real_path) + strlen (libname) + 2); | |
7c545dbe | 434 | real_full_soname = alloca (strlen (real_path) + strlen (soname) + 2); |
b4a555d6 UD |
435 | sprintf (real_full_libname, "%s/%s", real_path, libname); |
436 | sprintf (real_full_soname, "%s/%s", real_path, soname); | |
437 | } | |
438 | else | |
439 | { | |
440 | real_full_libname = full_libname; | |
441 | real_full_soname = full_soname; | |
442 | } | |
591e1ffb UD |
443 | |
444 | /* Does soname already exist and point to the right library? */ | |
b4a555d6 | 445 | if (chroot_stat (real_full_soname, full_soname, &stat_so) == 0) |
591e1ffb | 446 | { |
b4a555d6 | 447 | if (chroot_stat (real_full_libname, full_libname, &stat_lib)) |
591e1ffb UD |
448 | { |
449 | error (0, 0, _("Can't stat %s\n"), full_libname); | |
450 | return; | |
451 | } | |
452 | if (stat_lib.st_dev == stat_so.st_dev | |
453 | && stat_lib.st_ino == stat_so.st_ino) | |
454 | /* Link is already correct. */ | |
455 | do_link = 0; | |
b4a555d6 | 456 | else if (lstat64 (full_soname, &lstat_so) == 0 |
591e1ffb UD |
457 | && !S_ISLNK (lstat_so.st_mode)) |
458 | { | |
459 | error (0, 0, _("%s is not a symbolic link\n"), full_soname); | |
460 | do_link = 0; | |
461 | do_remove = 0; | |
462 | } | |
463 | } | |
b4a555d6 | 464 | else if (lstat64 (real_full_soname, &lstat_so) != 0 |
591e1ffb UD |
465 | || !S_ISLNK (lstat_so.st_mode)) |
466 | /* Unless it is a stale symlink, there is no need to remove. */ | |
467 | do_remove = 0; | |
468 | ||
469 | if (opt_verbose) | |
470 | printf ("\t%s -> %s", soname, libname); | |
471 | ||
472 | if (do_link && opt_link) | |
473 | { | |
474 | /* Remove old link. */ | |
475 | if (do_remove) | |
b4a555d6 | 476 | if (unlink (real_full_soname)) |
591e1ffb UD |
477 | { |
478 | error (0, 0, _("Can't unlink %s"), full_soname); | |
479 | do_link = 0; | |
480 | } | |
481 | /* Create symbolic link. */ | |
b4a555d6 | 482 | if (do_link && symlink (libname, real_full_soname)) |
591e1ffb UD |
483 | { |
484 | error (0, 0, _("Can't link %s to %s"), full_soname, libname); | |
485 | do_link = 0; | |
486 | } | |
487 | if (opt_verbose) | |
488 | { | |
489 | if (do_link) | |
490 | fputs (_(" (changed)\n"), stdout); | |
491 | else | |
492 | fputs (_(" (SKIPPED)\n"), stdout); | |
493 | } | |
494 | } | |
495 | else if (opt_verbose) | |
496 | fputs ("\n", stdout); | |
497 | } | |
498 | ||
b85697f6 UD |
499 | /* Manually link the given library. */ |
500 | static void | |
501 | manual_link (char *library) | |
502 | { | |
503 | char *path; | |
b4a555d6 UD |
504 | char *real_path; |
505 | char *real_library; | |
b85697f6 UD |
506 | char *libname; |
507 | char *soname; | |
b4a555d6 | 508 | struct stat64 stat_buf; |
b85697f6 | 509 | int flag; |
a986484f | 510 | unsigned int osversion; |
b85697f6 UD |
511 | |
512 | /* Prepare arguments for create_links call. Split library name in | |
513 | directory and filename first. Since path is allocated, we've got | |
514 | to be careful to free at the end. */ | |
515 | path = xstrdup (library); | |
516 | libname = strrchr (path, '/'); | |
517 | ||
518 | if (libname) | |
519 | { | |
520 | /* Successfully split names. Check if path is just "/" to avoid | |
521 | an empty path. */ | |
522 | if (libname == path) | |
523 | { | |
524 | libname = library + 1; | |
525 | path = xrealloc (path, 2); | |
526 | strcpy (path, "/"); | |
527 | } | |
528 | else | |
529 | { | |
530 | *libname = '\0'; | |
531 | ++libname; | |
532 | } | |
533 | } | |
534 | else | |
535 | { | |
536 | /* There's no path, construct one. */ | |
537 | libname = library; | |
538 | path = xrealloc (path, 2); | |
539 | strcpy (path, "."); | |
540 | } | |
541 | ||
b4a555d6 UD |
542 | if (opt_chroot) |
543 | { | |
544 | real_path = chroot_canon (opt_chroot, path); | |
545 | if (real_path == NULL) | |
546 | { | |
547 | error (0, errno, _("Can't find %s"), path); | |
548 | free (path); | |
549 | return; | |
550 | } | |
551 | real_library = alloca (strlen (real_path) + strlen (libname) + 2); | |
552 | sprintf (real_library, "%s/%s", real_path, libname); | |
553 | } | |
554 | else | |
555 | { | |
556 | real_path = path; | |
557 | real_library = library; | |
558 | } | |
559 | ||
b85697f6 | 560 | /* Do some sanity checks first. */ |
b4a555d6 | 561 | if (lstat64 (real_library, &stat_buf)) |
b85697f6 UD |
562 | { |
563 | error (0, errno, _("Can't lstat %s"), library); | |
564 | free (path); | |
565 | return; | |
566 | } | |
567 | /* We don't want links here! */ | |
568 | else if (!S_ISREG (stat_buf.st_mode)) | |
569 | { | |
570 | error (0, 0, _("Ignored file %s since it is not a regular file."), | |
571 | library); | |
572 | free (path); | |
573 | return; | |
574 | } | |
a986484f UD |
575 | if (process_file (real_library, library, libname, &flag, &osversion, |
576 | &soname, 0)) | |
b85697f6 UD |
577 | { |
578 | error (0, 0, _("No link created since soname could not be found for %s"), | |
579 | library); | |
580 | free (path); | |
581 | return; | |
582 | } | |
b4a555d6 | 583 | create_links (real_path, path, libname, soname); |
b85697f6 UD |
584 | free (soname); |
585 | free (path); | |
586 | } | |
587 | ||
588 | ||
591e1ffb UD |
589 | /* Read a whole directory and search for libraries. |
590 | The purpose is two-fold: | |
591 | - search for libraries which will be added to the cache | |
592 | - create symbolic links to the soname for each library | |
593 | ||
594 | This has to be done separatly for each directory. | |
45eca4d1 | 595 | |
591e1ffb UD |
596 | To keep track of which libraries to add to the cache and which |
597 | links to create, we save a list of all libraries. | |
598 | ||
599 | The algorithm is basically: | |
600 | for all libraries in the directory do | |
601 | get soname of library | |
602 | if soname is already in list | |
603 | if new library is newer, replace entry | |
604 | otherwise ignore this library | |
605 | otherwise add library to list | |
45eca4d1 | 606 | |
591e1ffb UD |
607 | For example, if the two libraries libxy.so.1.1 and libxy.so.1.2 |
608 | exist and both have the same soname, e.g. libxy.so, a symbolic link | |
609 | is created from libxy.so.1.2 (the newer one) to libxy.so. | |
610 | libxy.so.1.2 and libxy.so are added to the cache - but not | |
611 | libxy.so.1.1. */ | |
612 | ||
613 | /* Information for one library. */ | |
45eca4d1 | 614 | struct dlib_entry |
591e1ffb UD |
615 | { |
616 | char *name; | |
617 | char *soname; | |
618 | int flag; | |
619 | int is_link; | |
a986484f | 620 | unsigned int osversion; |
591e1ffb UD |
621 | struct dlib_entry *next; |
622 | }; | |
623 | ||
624 | ||
625 | static void | |
626 | search_dir (const struct dir_entry *entry) | |
627 | { | |
628 | DIR *dir; | |
2b510e91 | 629 | struct dirent64 *direntry; |
b4a555d6 UD |
630 | char *file_name, *dir_name, *real_file_name, *real_name; |
631 | int file_name_len, real_file_name_len, len; | |
591e1ffb UD |
632 | char *soname; |
633 | struct dlib_entry *dlibs; | |
634 | struct dlib_entry *dlib_ptr; | |
4ceae915 AJ |
635 | struct stat64 lstat_buf, stat_buf; |
636 | int is_link, is_dir; | |
a6c1c03a | 637 | uint64_t hwcap = path_hwcap (entry->path); |
a986484f | 638 | unsigned int osversion; |
45eca4d1 | 639 | |
7b0d235c AJ |
640 | file_name_len = PATH_MAX; |
641 | file_name = alloca (file_name_len); | |
f0189a54 | 642 | |
591e1ffb UD |
643 | dlibs = NULL; |
644 | ||
645 | if (opt_verbose) | |
45eca4d1 UD |
646 | { |
647 | if (hwcap != 0) | |
ab1d521d | 648 | printf ("%s: (hwcap: %#.16" PRIx64 ")\n", entry->path, hwcap); |
45eca4d1 UD |
649 | else |
650 | printf ("%s:\n", entry->path); | |
651 | } | |
652 | ||
b4a555d6 UD |
653 | if (opt_chroot) |
654 | { | |
655 | dir_name = chroot_canon (opt_chroot, entry->path); | |
656 | real_file_name_len = PATH_MAX; | |
657 | real_file_name = alloca (real_file_name_len); | |
658 | } | |
659 | else | |
660 | { | |
661 | dir_name = entry->path; | |
662 | real_file_name_len = 0; | |
663 | real_file_name = file_name; | |
664 | } | |
665 | ||
666 | if (dir_name == NULL || (dir = opendir (dir_name)) == NULL) | |
591e1ffb UD |
667 | { |
668 | if (opt_verbose) | |
669 | error (0, errno, _("Can't open directory %s"), entry->path); | |
b4a555d6 UD |
670 | if (opt_chroot && dir_name) |
671 | free (dir_name); | |
591e1ffb UD |
672 | return; |
673 | } | |
45eca4d1 | 674 | |
2b510e91 | 675 | while ((direntry = readdir64 (dir)) != NULL) |
591e1ffb UD |
676 | { |
677 | int flag; | |
678 | #ifdef _DIRENT_HAVE_D_TYPE | |
679 | /* We only look at links and regular files. */ | |
680 | if (direntry->d_type != DT_UNKNOWN | |
681 | && direntry->d_type != DT_LNK | |
45eca4d1 UD |
682 | && direntry->d_type != DT_REG |
683 | && direntry->d_type != DT_DIR) | |
591e1ffb UD |
684 | continue; |
685 | #endif /* _DIRENT_HAVE_D_TYPE */ | |
45eca4d1 UD |
686 | /* Does this file look like a shared library or is it a hwcap |
687 | subdirectory? The dynamic linker is also considered as | |
688 | shared library. */ | |
689 | if (((strncmp (direntry->d_name, "lib", 3) != 0 | |
690 | && strncmp (direntry->d_name, "ld-", 3) != 0) | |
691 | || strstr (direntry->d_name, ".so") == NULL) | |
95ce33a5 UD |
692 | && ( |
693 | #ifdef _DIRENT_HAVE_D_TYPE | |
694 | direntry->d_type == DT_REG || | |
695 | #endif | |
696 | !is_hwcap_platform (direntry->d_name))) | |
591e1ffb | 697 | continue; |
a334319f | 698 | len = strlen (entry->path) + strlen (direntry->d_name); |
7b0d235c | 699 | if (len > file_name_len) |
591e1ffb | 700 | { |
a334319f | 701 | file_name_len = len + 1; |
7b0d235c | 702 | file_name = alloca (file_name_len); |
b4a555d6 UD |
703 | if (!opt_chroot) |
704 | real_file_name = file_name; | |
705 | } | |
706 | sprintf (file_name, "%s/%s", entry->path, direntry->d_name); | |
707 | if (opt_chroot) | |
708 | { | |
a334319f | 709 | len = strlen (dir_name) + strlen (direntry->d_name); |
b4a555d6 UD |
710 | if (len > real_file_name_len) |
711 | { | |
a334319f | 712 | real_file_name_len = len + 1; |
b4a555d6 UD |
713 | real_file_name = alloca (real_file_name_len); |
714 | } | |
715 | sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); | |
591e1ffb | 716 | } |
7c3002f0 UD |
717 | #ifdef _DIRENT_HAVE_D_TYPE |
718 | if (direntry->d_type != DT_UNKNOWN) | |
4ceae915 | 719 | lstat_buf.st_mode = DTTOIF (direntry->d_type); |
7c3002f0 UD |
720 | else |
721 | #endif | |
95ce33a5 | 722 | if (__builtin_expect (lstat64 (real_file_name, &lstat_buf), 0)) |
7c3002f0 | 723 | { |
95ce33a5 | 724 | error (0, errno, _("Cannot lstat %s"), file_name); |
7c3002f0 UD |
725 | continue; |
726 | } | |
727 | ||
4ceae915 AJ |
728 | is_link = S_ISLNK (lstat_buf.st_mode); |
729 | if (is_link) | |
730 | { | |
731 | /* In case of symlink, we check if the symlink refers to | |
732 | a directory. */ | |
95ce33a5 | 733 | if (__builtin_expect (stat64 (real_file_name, &stat_buf), 0)) |
4ceae915 | 734 | { |
8645ad47 | 735 | if (opt_verbose) |
95ce33a5 | 736 | error (0, errno, _("Cannot stat %s"), file_name); |
647eb037 UD |
737 | |
738 | /* Remove stale symlinks. */ | |
739 | if (strstr (direntry->d_name, ".so.")) | |
740 | unlink (real_file_name); | |
4ceae915 AJ |
741 | continue; |
742 | } | |
743 | is_dir = S_ISDIR (stat_buf.st_mode); | |
744 | } | |
745 | else | |
746 | is_dir = S_ISDIR (lstat_buf.st_mode); | |
747 | ||
748 | if (is_dir && is_hwcap_platform (direntry->d_name)) | |
45eca4d1 | 749 | { |
a8fd59b0 AJ |
750 | /* Handle subdirectory later. */ |
751 | struct dir_entry *new_entry; | |
752 | ||
753 | new_entry = xmalloc (sizeof (struct dir_entry)); | |
7b0d235c | 754 | new_entry->path = xstrdup (file_name); |
a8fd59b0 AJ |
755 | new_entry->flag = entry->flag; |
756 | new_entry->next = NULL; | |
4ceae915 AJ |
757 | if (is_link) |
758 | { | |
759 | new_entry->ino = stat_buf.st_ino; | |
760 | new_entry->dev = stat_buf.st_dev; | |
761 | } | |
762 | else | |
763 | { | |
95ce33a5 UD |
764 | #ifdef _DIRENT_HAVE_D_TYPE |
765 | /* We have filled in lstat only #ifndef | |
766 | _DIRENT_HAVE_D_TYPE. Fill it in if needed. */ | |
767 | if (direntry->d_type != DT_UNKNOWN | |
768 | && __builtin_expect (lstat64 (real_file_name, &lstat_buf), | |
769 | 0)) | |
770 | { | |
771 | error (0, errno, _("Cannot lstat %s"), file_name); | |
772 | free (new_entry->path); | |
773 | free (new_entry); | |
774 | continue; | |
775 | } | |
776 | #endif | |
777 | ||
4ceae915 AJ |
778 | new_entry->ino = lstat_buf.st_ino; |
779 | new_entry->dev = lstat_buf.st_dev; | |
780 | } | |
a8fd59b0 | 781 | add_single_dir (new_entry, 0); |
45eca4d1 UD |
782 | continue; |
783 | } | |
0f843f89 | 784 | else if (!S_ISREG (lstat_buf.st_mode) && !is_link) |
591e1ffb UD |
785 | continue; |
786 | ||
b4a555d6 UD |
787 | if (opt_chroot && is_link) |
788 | { | |
789 | real_name = chroot_canon (opt_chroot, file_name); | |
790 | if (real_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 | } | |
797 | else | |
798 | real_name = real_file_name; | |
591e1ffb | 799 | |
b4a555d6 | 800 | if (process_file (real_name, file_name, direntry->d_name, &flag, |
a986484f | 801 | &osversion, &soname, is_link)) |
b4a555d6 UD |
802 | { |
803 | if (real_name != real_file_name) | |
804 | free (real_name); | |
805 | continue; | |
806 | } | |
807 | ||
82d8607d UD |
808 | |
809 | /* A link may just point to itself. */ | |
591e1ffb UD |
810 | if (is_link) |
811 | { | |
82d8607d UD |
812 | /* If the path the link points to isn't its soname and it is not |
813 | .so symlink for ld(1) only, we treat it as a normal file. */ | |
2fe98a4a | 814 | const char *real_base_name = basename (real_file_name); |
82d8607d UD |
815 | |
816 | if (strcmp (real_base_name, soname) != 0) | |
817 | { | |
818 | len = strlen (real_base_name); | |
819 | if (len < strlen (".so") | |
820 | || strcmp (real_base_name + len - strlen (".so"), ".so") != 0 | |
821 | || strncmp (real_base_name, soname, len) != 0) | |
822 | is_link = 0; | |
823 | } | |
824 | } | |
45eca4d1 | 825 | |
395412a0 UD |
826 | if (real_name != real_file_name) |
827 | free (real_name); | |
828 | ||
82d8607d UD |
829 | if (is_link) |
830 | { | |
831 | free (soname); | |
832 | soname = xstrdup (direntry->d_name); | |
833 | } | |
834 | ||
591e1ffb UD |
835 | if (flag == FLAG_ELF |
836 | && (entry->flag == FLAG_ELF_LIBC5 | |
837 | || entry->flag == FLAG_ELF_LIBC6)) | |
838 | flag = entry->flag; | |
839 | /* Some sanity checks to print warnings. */ | |
840 | if (opt_verbose) | |
841 | { | |
842 | if (flag == FLAG_ELF_LIBC5 && entry->flag != FLAG_ELF_LIBC5 | |
843 | && entry->flag != FLAG_ANY) | |
7b0d235c | 844 | error (0, 0, _("libc5 library %s in wrong directory"), file_name); |
591e1ffb UD |
845 | if (flag == FLAG_ELF_LIBC6 && entry->flag != FLAG_ELF_LIBC6 |
846 | && entry->flag != FLAG_ANY) | |
7b0d235c | 847 | error (0, 0, _("libc6 library %s in wrong directory"), file_name); |
591e1ffb UD |
848 | if (flag == FLAG_LIBC4 && entry->flag != FLAG_LIBC4 |
849 | && entry->flag != FLAG_ANY) | |
7b0d235c | 850 | error (0, 0, _("libc4 library %s in wrong directory"), file_name); |
591e1ffb | 851 | } |
45eca4d1 | 852 | |
591e1ffb UD |
853 | /* Add library to list. */ |
854 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
855 | { | |
856 | /* Is soname already in list? */ | |
857 | if (strcmp (dlib_ptr->soname, soname) == 0) | |
858 | { | |
859 | /* Prefer a file to a link, otherwise check which one | |
860 | is newer. */ | |
861 | if ((!is_link && dlib_ptr->is_link) | |
862 | || (is_link == dlib_ptr->is_link | |
45eca4d1 | 863 | && _dl_cache_libcmp (dlib_ptr->name, direntry->d_name) < 0)) |
591e1ffb UD |
864 | { |
865 | /* It's newer - add it. */ | |
866 | /* Flag should be the same - sanity check. */ | |
867 | if (dlib_ptr->flag != flag) | |
868 | { | |
869 | if (dlib_ptr->flag == FLAG_ELF | |
870 | && (flag == FLAG_ELF_LIBC5 || flag == FLAG_ELF_LIBC6)) | |
871 | dlib_ptr->flag = flag; | |
872 | else if ((dlib_ptr->flag == FLAG_ELF_LIBC5 | |
873 | || dlib_ptr->flag == FLAG_ELF_LIBC6) | |
874 | && flag == FLAG_ELF) | |
875 | dlib_ptr->flag = flag; | |
876 | else | |
877 | error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."), | |
878 | dlib_ptr->name, direntry->d_name, entry->path); | |
879 | } | |
880 | free (dlib_ptr->name); | |
b15ff9d6 | 881 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
882 | dlib_ptr->name = xstrdup (direntry->d_name); |
883 | dlib_ptr->is_link = is_link; | |
884 | } | |
885 | /* Don't add this library, abort loop. */ | |
886 | /* Also free soname, since it's dynamically allocated. */ | |
887 | free (soname); | |
888 | break; | |
889 | } | |
890 | } | |
891 | /* Add the library if it's not already in. */ | |
892 | if (dlib_ptr == NULL) | |
893 | { | |
894 | dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry)); | |
895 | dlib_ptr->name = xstrdup (direntry->d_name); | |
896 | dlib_ptr->flag = flag; | |
a986484f | 897 | dlib_ptr->osversion = osversion; |
591e1ffb UD |
898 | dlib_ptr->soname = soname; |
899 | dlib_ptr->is_link = is_link; | |
900 | /* Add at head of list. */ | |
901 | dlib_ptr->next = dlibs; | |
902 | dlibs = dlib_ptr; | |
903 | } | |
904 | } | |
905 | ||
906 | closedir (dir); | |
907 | ||
908 | /* Now dlibs contains a list of all libs - add those to the cache | |
909 | and created all symbolic links. */ | |
910 | for (dlib_ptr = dlibs; dlib_ptr != NULL; dlib_ptr = dlib_ptr->next) | |
911 | { | |
912 | /* Don't create links to links. */ | |
913 | if (dlib_ptr->is_link == 0) | |
b4a555d6 UD |
914 | create_links (dir_name, entry->path, dlib_ptr->name, |
915 | dlib_ptr->soname); | |
591e1ffb | 916 | if (opt_build_cache) |
a986484f UD |
917 | add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, |
918 | dlib_ptr->osversion, hwcap); | |
591e1ffb UD |
919 | } |
920 | ||
921 | /* Free all resources. */ | |
45eca4d1 | 922 | while (dlibs) |
591e1ffb UD |
923 | { |
924 | dlib_ptr = dlibs; | |
925 | free (dlib_ptr->soname); | |
926 | free (dlib_ptr->name); | |
927 | dlibs = dlibs->next; | |
928 | free (dlib_ptr); | |
929 | } | |
b4a555d6 UD |
930 | |
931 | if (opt_chroot && dir_name) | |
932 | free (dir_name); | |
591e1ffb UD |
933 | } |
934 | ||
935 | /* Search through all libraries. */ | |
936 | static void | |
937 | search_dirs (void) | |
938 | { | |
939 | struct dir_entry *entry; | |
940 | ||
941 | for (entry = dir_entries; entry != NULL; entry = entry->next) | |
942 | search_dir (entry); | |
943 | ||
944 | /* Free all allocated memory. */ | |
945 | while (dir_entries) | |
946 | { | |
947 | entry = dir_entries; | |
948 | dir_entries = dir_entries->next; | |
949 | free (entry->path); | |
950 | free (entry); | |
951 | } | |
952 | } | |
953 | ||
954 | ||
8e115d80 | 955 | static void parse_conf_include (const char *config_file, unsigned int lineno, |
a334319f | 956 | bool do_chroot, const char *pattern); |
8e115d80 | 957 | |
591e1ffb UD |
958 | /* Parse configuration file. */ |
959 | static void | |
a334319f | 960 | parse_conf (const char *filename, bool do_chroot) |
591e1ffb | 961 | { |
b4a555d6 | 962 | FILE *file = NULL; |
591e1ffb | 963 | char *line = NULL; |
b4a555d6 | 964 | const char *canon; |
591e1ffb | 965 | size_t len = 0; |
8e115d80 | 966 | unsigned int lineno; |
45eca4d1 | 967 | |
8e115d80 | 968 | if (do_chroot && opt_chroot) |
b4a555d6 UD |
969 | { |
970 | canon = chroot_canon (opt_chroot, filename); | |
971 | if (canon) | |
972 | file = fopen (canon, "r"); | |
973 | else | |
974 | canon = filename; | |
975 | } | |
976 | else | |
977 | { | |
978 | canon = filename; | |
979 | file = fopen (filename, "r"); | |
980 | } | |
591e1ffb UD |
981 | |
982 | if (file == NULL) | |
983 | { | |
b4a555d6 UD |
984 | error (0, errno, _("Can't open configuration file %s"), canon); |
985 | if (canon != filename) | |
986 | free ((char *) canon); | |
591e1ffb UD |
987 | return; |
988 | } | |
989 | ||
c96873d7 UD |
990 | /* No threads use this stream. */ |
991 | __fsetlocking (file, FSETLOCKING_BYCALLER); | |
992 | ||
b4a555d6 UD |
993 | if (canon != filename) |
994 | free ((char *) canon); | |
995 | ||
8e115d80 | 996 | lineno = 0; |
591e1ffb UD |
997 | do |
998 | { | |
999 | ssize_t n = getline (&line, &len, file); | |
1000 | if (n < 0) | |
1001 | break; | |
1002 | ||
8e115d80 | 1003 | ++lineno; |
591e1ffb UD |
1004 | if (line[n - 1] == '\n') |
1005 | line[n - 1] = '\0'; | |
1006 | ||
1007 | /* Because the file format does not know any form of quoting we | |
1008 | can search forward for the next '#' character and if found | |
1009 | make it terminating the line. */ | |
1010 | *strchrnul (line, '#') = '\0'; | |
1011 | ||
69acbe9f UD |
1012 | /* Remove leading whitespace. NUL is no whitespace character. */ |
1013 | char *cp = line; | |
1014 | while (isspace (*cp)) | |
1015 | ++cp; | |
1016 | ||
591e1ffb | 1017 | /* If the line is blank it is ignored. */ |
69acbe9f | 1018 | if (cp[0] == '\0') |
591e1ffb UD |
1019 | continue; |
1020 | ||
8e115d80 RM |
1021 | if (!strncmp (cp, "include", 7) && isblank (cp[7])) |
1022 | { | |
1023 | char *dir; | |
1024 | cp += 8; | |
1025 | while ((dir = strsep (&cp, " \t")) != NULL) | |
1026 | if (dir[0] != '\0') | |
a334319f | 1027 | parse_conf_include (filename, lineno, do_chroot, dir); |
8e115d80 | 1028 | } |
ab1d521d RM |
1029 | else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5])) |
1030 | { | |
1031 | cp += 6; | |
1032 | char *p, *name = NULL; | |
1033 | unsigned long int n = strtoul (cp, &cp, 0); | |
1034 | if (cp != NULL && isblank (*cp)) | |
1035 | while ((p = strsep (&cp, " \t")) != NULL) | |
1036 | if (p[0] != '\0') | |
1037 | { | |
1038 | if (name == NULL) | |
1039 | name = p; | |
1040 | else | |
1041 | { | |
1042 | name = NULL; | |
1043 | break; | |
1044 | } | |
1045 | } | |
1046 | if (name == NULL) | |
1047 | { | |
1048 | error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"), | |
1049 | filename, lineno); | |
1050 | break; | |
1051 | } | |
1052 | if (n >= (64 - _DL_FIRST_EXTRA)) | |
1053 | error (EXIT_FAILURE, 0, | |
1054 | _("%s:%u: hwcap index %lu above maximum %u"), | |
1055 | filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1); | |
1056 | if (hwcap_extra[n] == NULL) | |
1057 | { | |
1058 | for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h) | |
1059 | if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h])) | |
1060 | error (EXIT_FAILURE, 0, | |
1061 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1062 | filename, lineno, h, name); | |
1063 | hwcap_extra[n] = xstrdup (name); | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | if (strcmp (name, hwcap_extra[n])) | |
1068 | error (EXIT_FAILURE, 0, | |
1069 | _("%s:%u: hwcap index %lu already defined as %s"), | |
1070 | filename, lineno, n, hwcap_extra[n]); | |
1071 | if (opt_verbose) | |
1072 | error (0, 0, _("%s:%u: duplicate hwcap %lu %s"), | |
1073 | filename, lineno, n, name); | |
1074 | } | |
1075 | } | |
8e115d80 RM |
1076 | else |
1077 | add_dir (cp); | |
69acbe9f UD |
1078 | } |
1079 | while (!feof_unlocked (file)); | |
591e1ffb UD |
1080 | |
1081 | /* Free buffer and close file. */ | |
1082 | free (line); | |
1083 | fclose (file); | |
1084 | } | |
1085 | ||
8e115d80 RM |
1086 | /* Handle one word in an `include' line, a glob pattern of additional |
1087 | config files to read. */ | |
1088 | static void | |
1089 | parse_conf_include (const char *config_file, unsigned int lineno, | |
a334319f | 1090 | bool do_chroot, const char *pattern) |
8e115d80 RM |
1091 | { |
1092 | if (opt_chroot && pattern[0] != '/') | |
1093 | error (EXIT_FAILURE, 0, | |
1094 | _("need absolute file name for configuration file when using -r")); | |
1095 | ||
1096 | char *copy = NULL; | |
1097 | if (pattern[0] != '/' && strchr (config_file, '/') != NULL) | |
1098 | { | |
322861e8 UD |
1099 | if (asprintf (©, "%s/%s", dirname (strdupa (config_file)), |
1100 | pattern) < 0) | |
1101 | error (EXIT_FAILURE, 0, _("memory exhausted")); | |
8e115d80 RM |
1102 | pattern = copy; |
1103 | } | |
1104 | ||
1105 | glob64_t gl; | |
1106 | int result; | |
1107 | if (do_chroot && opt_chroot) | |
1108 | { | |
1109 | char *canon = chroot_canon (opt_chroot, pattern); | |
1110 | result = glob64 (canon ?: pattern, 0, NULL, &gl); | |
1111 | free (canon); | |
1112 | } | |
1113 | else | |
1114 | result = glob64 (pattern, 0, NULL, &gl); | |
1115 | ||
1116 | switch (result) | |
1117 | { | |
1118 | case 0: | |
1119 | for (size_t i = 0; i < gl.gl_pathc; ++i) | |
a334319f | 1120 | parse_conf (gl.gl_pathv[i], false); |
8e115d80 RM |
1121 | globfree64 (&gl); |
1122 | break; | |
1123 | ||
1124 | case GLOB_NOMATCH: | |
1125 | break; | |
1126 | ||
1127 | case GLOB_NOSPACE: | |
1128 | errno = ENOMEM; | |
1129 | case GLOB_ABORTED: | |
1130 | if (opt_verbose) | |
1131 | error (0, errno, _("%s:%u: cannot read directory %s"), | |
1132 | config_file, lineno, pattern); | |
1133 | break; | |
1134 | ||
1135 | default: | |
1136 | abort (); | |
1137 | break; | |
1138 | } | |
1139 | ||
1140 | if (copy) | |
1141 | free (copy); | |
1142 | } | |
1143 | ||
0cfbb8c6 UD |
1144 | /* Honour LD_HWCAP_MASK. */ |
1145 | static void | |
1146 | set_hwcap (void) | |
1147 | { | |
1148 | char *mask = getenv ("LD_HWCAP_MASK"); | |
1149 | ||
1150 | if (mask) | |
1151 | hwcap_mask = strtoul (mask, NULL, 0); | |
1152 | } | |
1153 | ||
591e1ffb UD |
1154 | |
1155 | int | |
1156 | main (int argc, char **argv) | |
1157 | { | |
1158 | int remaining; | |
45eca4d1 | 1159 | |
591e1ffb UD |
1160 | /* Parse and process arguments. */ |
1161 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
1162 | ||
11bf8ce1 | 1163 | /* Remaining arguments are additional directories if opt_manual_link |
b85697f6 UD |
1164 | is not set. */ |
1165 | if (remaining != argc && !opt_manual_link) | |
591e1ffb UD |
1166 | { |
1167 | int i; | |
1168 | for (i = remaining; i < argc; ++i) | |
11bf8ce1 UD |
1169 | if (opt_build_cache && argv[i][0] != '/') |
1170 | error (EXIT_FAILURE, 0, | |
1171 | _("relative path `%s' used to build cache"), | |
1172 | argv[i]); | |
1173 | else | |
1174 | add_dir (argv[i]); | |
591e1ffb UD |
1175 | } |
1176 | ||
ab1d521d RM |
1177 | #ifdef USE_TLS |
1178 | hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls"; | |
1179 | #endif | |
1180 | ||
0cfbb8c6 UD |
1181 | set_hwcap (); |
1182 | ||
591e1ffb UD |
1183 | if (opt_chroot) |
1184 | { | |
f0189a54 | 1185 | /* Normalize the path a bit, we might need it for printing later. */ |
a334319f | 1186 | char *endp = strchr (opt_chroot, '\0'); |
b4a555d6 | 1187 | while (endp > opt_chroot && endp[-1] == '/') |
f0189a54 UD |
1188 | --endp; |
1189 | *endp = '\0'; | |
b4a555d6 UD |
1190 | if (endp == opt_chroot) |
1191 | opt_chroot = NULL; | |
f0189a54 | 1192 | |
b4a555d6 UD |
1193 | if (opt_chroot) |
1194 | { | |
1195 | /* It is faster to use chroot if we can. */ | |
1196 | if (!chroot (opt_chroot)) | |
1197 | { | |
1198 | if (chdir ("/")) | |
1199 | error (EXIT_FAILURE, errno, _("Can't chdir to /")); | |
1200 | opt_chroot = NULL; | |
1201 | } | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | if (cache_file == NULL) | |
1206 | { | |
1207 | cache_file = alloca (strlen (LD_SO_CACHE) + 1); | |
1208 | strcpy (cache_file, LD_SO_CACHE); | |
591e1ffb UD |
1209 | } |
1210 | ||
b4a555d6 UD |
1211 | if (config_file == NULL) |
1212 | config_file = LD_SO_CONF; | |
1213 | ||
591e1ffb UD |
1214 | if (opt_print_cache) |
1215 | { | |
b4a555d6 UD |
1216 | if (opt_chroot) |
1217 | { | |
1218 | char *p = chroot_canon (opt_chroot, cache_file); | |
1219 | if (p == NULL) | |
1220 | error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), | |
1221 | cache_file); | |
1222 | cache_file = p; | |
1223 | } | |
591e1ffb | 1224 | print_cache (cache_file); |
b4a555d6 UD |
1225 | if (opt_chroot) |
1226 | free (cache_file); | |
591e1ffb UD |
1227 | exit (0); |
1228 | } | |
1229 | ||
b4a555d6 UD |
1230 | if (opt_chroot) |
1231 | { | |
1232 | /* Canonicalize the directory name of cache_file, not cache_file, | |
1233 | because we'll rename a temporary cache file to it. */ | |
1234 | char *p = strrchr (cache_file, '/'); | |
1235 | char *canon = chroot_canon (opt_chroot, | |
1236 | p ? (*p = '\0', cache_file) : "/"); | |
1237 | ||
1238 | if (canon == NULL) | |
1239 | { | |
1240 | error (EXIT_FAILURE, errno, | |
1241 | _("Can't open cache file directory %s\n"), | |
1242 | p ? cache_file : "/"); | |
1243 | } | |
1244 | ||
1245 | if (p) | |
1246 | ++p; | |
1247 | else | |
1248 | p = cache_file; | |
1249 | ||
1250 | cache_file = alloca (strlen (canon) + strlen (p) + 2); | |
1251 | sprintf (cache_file, "%s/%s", canon, p); | |
1252 | free (canon); | |
1253 | } | |
1254 | ||
b85697f6 UD |
1255 | if (opt_manual_link) |
1256 | { | |
1257 | /* Link all given libraries manually. */ | |
1258 | int i; | |
1259 | ||
1260 | for (i = remaining; i < argc; ++i) | |
a986484f | 1261 | manual_link (argv[i]); |
b85697f6 UD |
1262 | |
1263 | exit (0); | |
1264 | } | |
45eca4d1 UD |
1265 | |
1266 | ||
591e1ffb UD |
1267 | if (opt_build_cache) |
1268 | init_cache (); | |
1269 | ||
1270 | if (!opt_only_cline) | |
1271 | { | |
a334319f | 1272 | parse_conf (config_file, true); |
334fcf2a | 1273 | |
591e1ffb | 1274 | /* Always add the standard search paths. */ |
bd89c0b5 | 1275 | add_system_dir (SLIBDIR); |
8ca91b36 | 1276 | if (strcmp (SLIBDIR, LIBDIR)) |
bd89c0b5 | 1277 | add_system_dir (LIBDIR); |
591e1ffb | 1278 | } |
45eca4d1 | 1279 | |
591e1ffb UD |
1280 | search_dirs (); |
1281 | ||
1282 | if (opt_build_cache) | |
1283 | save_cache (cache_file); | |
1284 | ||
1285 | return 0; | |
1286 | } |