1 /* BFD back-end for archive files (libraries). 2 Copyright (C) 1990-2020 Free Software Foundation, Inc. 3 Written by Cygnus Support. Mostly Gumby Henkel-Wallace's fault. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21 /* 22 @setfilename archive-info 23 SECTION 24 Archives 25 26 DESCRIPTION 27 An archive (or library) is just another BFD. It has a symbol 28 table, although there's not much a user program will do with it. 29 30 The big difference between an archive BFD and an ordinary BFD 31 is that the archive doesn't have sections. Instead it has a 32 chain of BFDs that are considered its contents. These BFDs can 33 be manipulated like any other. The BFDs contained in an 34 archive opened for reading will all be opened for reading. You 35 may put either input or output BFDs into an archive opened for 36 output; they will be handled correctly when the archive is closed. 37 38 Use <<bfd_openr_next_archived_file>> to step through 39 the contents of an archive opened for input. You don't 40 have to read the entire archive if you don't want 41 to! Read it until you find what you want. 42 43 A BFD returned by <<bfd_openr_next_archived_file>> can be 44 closed manually with <<bfd_close>>. If you do not close it, 45 then a second iteration through the members of an archive may 46 return the same BFD. If you close the archive BFD, then all 47 the member BFDs will automatically be closed as well. 48 49 Archive contents of output BFDs are chained through the 50 <<archive_next>> pointer in a BFD. The first one is findable 51 through the <<archive_head>> slot of the archive. Set it with 52 <<bfd_set_archive_head>> (q.v.). A given BFD may be in only 53 one open output archive at a time. 54 55 As expected, the BFD archive code is more general than the 56 archive code of any given environment. BFD archives may 57 contain files of different formats (e.g., a.out and coff) and 58 even different architectures. You may even place archives 59 recursively into archives! 60 61 This can cause unexpected confusion, since some archive 62 formats are more expressive than others. For instance, Intel 63 COFF archives can preserve long filenames; SunOS a.out archives 64 cannot. If you move a file from the first to the second 65 format and back again, the filename may be truncated. 66 Likewise, different a.out environments have different 67 conventions as to how they truncate filenames, whether they 68 preserve directory names in filenames, etc. When 69 interoperating with native tools, be sure your files are 70 homogeneous. 71 72 Beware: most of these formats do not react well to the 73 presence of spaces in filenames. We do the best we can, but 74 can't always handle this case due to restrictions in the format of 75 archives. Many Unix utilities are braindead in regards to 76 spaces and such in filenames anyway, so this shouldn't be much 77 of a restriction. 78 79 Archives are supported in BFD in <<archive.c>>. 80 81 SUBSECTION 82 Archive functions 83 */ 84 85 /* Assumes: 86 o - all archive elements start on an even boundary, newline padded; 87 o - all arch headers are char *; 88 o - all arch headers are the same size (across architectures). 89 */ 90 91 /* Some formats provide a way to cram a long filename into the short 92 (16 chars) space provided by a BSD archive. The trick is: make a 93 special "file" in the front of the archive, sort of like the SYMDEF 94 entry. If the filename is too long to fit, put it in the extended 95 name table, and use its index as the filename. To prevent 96 confusion prepend the index with a space. This means you can't 97 have filenames that start with a space, but then again, many Unix 98 utilities can't handle that anyway. 99 100 This scheme unfortunately requires that you stand on your head in 101 order to write an archive since you need to put a magic file at the 102 front, and need to touch every entry to do so. C'est la vie. 103 104 We support two variants of this idea: 105 The SVR4 format (extended name table is named "//"), 106 and an extended pseudo-BSD variant (extended name table is named 107 "ARFILENAMES/"). The origin of the latter format is uncertain. 108 109 BSD 4.4 uses a third scheme: It writes a long filename 110 directly after the header. This allows 'ar q' to work. 111 */ 112 113 /* Summary of archive member names: 114 115 Symbol table (must be first): 116 "__.SYMDEF " - Symbol table, Berkeley style, produced by ranlib. 117 "/ " - Symbol table, system 5 style. 118 119 Long name table (must be before regular file members): 120 "// " - Long name table, System 5 R4 style. 121 "ARFILENAMES/ " - Long name table, non-standard extended BSD (not BSD 4.4). 122 123 Regular file members with short names: 124 "filename.o/ " - Regular file, System 5 style (embedded spaces ok). 125 "filename.o " - Regular file, Berkeley style (no embedded spaces). 126 127 Regular files with long names (or embedded spaces, for BSD variants): 128 "/18 " - SVR4 style, name at offset 18 in name table. 129 "#1/23 " - Long name (or embedded spaces) 23 characters long, 130 BSD 4.4 style, full name follows header. 131 " 18 " - Long name 18 characters long, extended pseudo-BSD. 132 */ 133 134 #include "sysdep.h" 135 #include "bfd.h" 136 #include "libiberty.h" 137 #include "libbfd.h" 138 #include "aout/ar.h" 139 #include "aout/ranlib.h" 140 #include "safe-ctype.h" 141 #include "hashtab.h" 142 #include "filenames.h" 143 #include "bfdlink.h" 144 145 #ifndef errno 146 extern int errno; 147 #endif 148 149 /* We keep a cache of archive filepointers to archive elements to 150 speed up searching the archive by filepos. We only add an entry to 151 the cache when we actually read one. We also don't sort the cache; 152 it's generally short enough to search linearly. 153 Note that the pointers here point to the front of the ar_hdr, not 154 to the front of the contents! */ 155 struct ar_cache 156 { 157 file_ptr ptr; 158 bfd *arbfd; 159 }; 160 161 #define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char) 162 #define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen) 163 164 #define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data)) 165 166 static const char * normalize (bfd *, const char *); 167 168 #define arch_hdr(bfd) ((struct ar_hdr *) arch_eltdata (bfd)->arch_header) 169 170 /* True iff NAME designated a BSD 4.4 extended name. */ 171 172 #define is_bsd44_extended_name(NAME) \ 173 (NAME[0] == '#' && NAME[1] == '1' && NAME[2] == '/' && ISDIGIT (NAME[3])) 174 175 void 176 _bfd_ar_spacepad (char *p, size_t n, const char *fmt, long val) 177 { 178 static char buf[20]; 179 size_t len; 180 181 snprintf (buf, sizeof (buf), fmt, val); 182 len = strlen (buf); 183 if (len < n) 184 { 185 memcpy (p, buf, len); 186 memset (p + len, ' ', n - len); 187 } 188 else 189 memcpy (p, buf, n); 190 } 191 192 bfd_boolean 193 _bfd_ar_sizepad (char *p, size_t n, bfd_size_type size) 194 { 195 static char buf[21]; 196 size_t len; 197 198 snprintf (buf, sizeof (buf), "%-10" BFD_VMA_FMT "u", size); 199 len = strlen (buf); 200 if (len > n) 201 { 202 bfd_set_error (bfd_error_file_too_big); 203 return FALSE; 204 } 205 if (len < n) 206 { 207 memcpy (p, buf, len); 208 memset (p + len, ' ', n - len); 209 } 210 else 211 memcpy (p, buf, n); 212 return TRUE; 213 } 214 215 bfd_boolean 216 _bfd_generic_mkarchive (bfd *abfd) 217 { 218 bfd_size_type amt = sizeof (struct artdata); 219 220 abfd->tdata.aout_ar_data = (struct artdata *) bfd_zalloc (abfd, amt); 221 if (bfd_ardata (abfd) == NULL) 222 return FALSE; 223 224 /* Already cleared by bfd_zalloc above. 225 bfd_ardata (abfd)->cache = NULL; 226 bfd_ardata (abfd)->archive_head = NULL; 227 bfd_ardata (abfd)->symdefs = NULL; 228 bfd_ardata (abfd)->extended_names = NULL; 229 bfd_ardata (abfd)->extended_names_size = 0; 230 bfd_ardata (abfd)->tdata = NULL; */ 231 232 return TRUE; 233 } 234 235 /* 236 FUNCTION 237 bfd_get_next_mapent 238 239 SYNOPSIS 240 symindex bfd_get_next_mapent 241 (bfd *abfd, symindex previous, carsym **sym); 242 243 DESCRIPTION 244 Step through archive @var{abfd}'s symbol table (if it 245 has one). Successively update @var{sym} with the next symbol's 246 information, returning that symbol's (internal) index into the 247 symbol table. 248 249 Supply <<BFD_NO_MORE_SYMBOLS>> as the @var{previous} entry to get 250 the first one; returns <<BFD_NO_MORE_SYMBOLS>> when you've already 251 got the last one. 252 253 A <<carsym>> is a canonical archive symbol. The only 254 user-visible element is its name, a null-terminated string. 255 */ 256 257 symindex 258 bfd_get_next_mapent (bfd *abfd, symindex prev, carsym **entry) 259 { 260 if (!bfd_has_map (abfd)) 261 { 262 bfd_set_error (bfd_error_invalid_operation); 263 return BFD_NO_MORE_SYMBOLS; 264 } 265 266 if (prev == BFD_NO_MORE_SYMBOLS) 267 prev = 0; 268 else 269 ++prev; 270 if (prev >= bfd_ardata (abfd)->symdef_count) 271 return BFD_NO_MORE_SYMBOLS; 272 273 *entry = (bfd_ardata (abfd)->symdefs + prev); 274 return prev; 275 } 276 277 /* To be called by backends only. */ 278 279 bfd * 280 _bfd_create_empty_archive_element_shell (bfd *obfd) 281 { 282 return _bfd_new_bfd_contained_in (obfd); 283 } 284 285 /* 286 FUNCTION 287 bfd_set_archive_head 288 289 SYNOPSIS 290 bfd_boolean bfd_set_archive_head (bfd *output, bfd *new_head); 291 292 DESCRIPTION 293 Set the head of the chain of 294 BFDs contained in the archive @var{output} to @var{new_head}. 295 */ 296 297 bfd_boolean 298 bfd_set_archive_head (bfd *output_archive, bfd *new_head) 299 { 300 output_archive->archive_head = new_head; 301 return TRUE; 302 } 303 304 bfd * 305 _bfd_look_for_bfd_in_cache (bfd *arch_bfd, file_ptr filepos) 306 { 307 htab_t hash_table = bfd_ardata (arch_bfd)->cache; 308 struct ar_cache m; 309 310 m.ptr = filepos; 311 312 if (hash_table) 313 { 314 struct ar_cache *entry = (struct ar_cache *) htab_find (hash_table, &m); 315 if (!entry) 316 return NULL; 317 318 /* Unfortunately this flag is set after checking that we have 319 an archive, and checking for an archive means one element has 320 sneaked into the cache. */ 321 entry->arbfd->no_export = arch_bfd->no_export; 322 return entry->arbfd; 323 } 324 else 325 return NULL; 326 } 327 328 static hashval_t 329 hash_file_ptr (const void * p) 330 { 331 return (hashval_t) (((struct ar_cache *) p)->ptr); 332 } 333 334 /* Returns non-zero if P1 and P2 are equal. */ 335 336 static int 337 eq_file_ptr (const void * p1, const void * p2) 338 { 339 struct ar_cache *arc1 = (struct ar_cache *) p1; 340 struct ar_cache *arc2 = (struct ar_cache *) p2; 341 return arc1->ptr == arc2->ptr; 342 } 343 344 /* The calloc function doesn't always take size_t (e.g. on VMS) 345 so wrap it to avoid a compile time warning. */ 346 347 static void * 348 _bfd_calloc_wrapper (size_t a, size_t b) 349 { 350 return calloc (a, b); 351 } 352 353 /* Kind of stupid to call cons for each one, but we don't do too many. */ 354 355 bfd_boolean 356 _bfd_add_bfd_to_archive_cache (bfd *arch_bfd, file_ptr filepos, bfd *new_elt) 357 { 358 struct ar_cache *cache; 359 htab_t hash_table = bfd_ardata (arch_bfd)->cache; 360 361 /* If the hash table hasn't been created, create it. */ 362 if (hash_table == NULL) 363 { 364 hash_table = htab_create_alloc (16, hash_file_ptr, eq_file_ptr, 365 NULL, _bfd_calloc_wrapper, free); 366 if (hash_table == NULL) 367 return FALSE; 368 bfd_ardata (arch_bfd)->cache = hash_table; 369 } 370 371 /* Insert new_elt into the hash table by filepos. */ 372 cache = (struct ar_cache *) bfd_zalloc (arch_bfd, sizeof (struct ar_cache)); 373 cache->ptr = filepos; 374 cache->arbfd = new_elt; 375 *htab_find_slot (hash_table, (const void *) cache, INSERT) = cache; 376 377 /* Provide a means of accessing this from child. */ 378 arch_eltdata (new_elt)->parent_cache = hash_table; 379 arch_eltdata (new_elt)->key = filepos; 380 381 return TRUE; 382 } 383 384 static bfd * 385 open_nested_file (const char *filename, bfd *archive) 386 { 387 const char *target; 388 bfd *n_bfd; 389 390 target = NULL; 391 if (!archive->target_defaulted) 392 target = archive->xvec->name; 393 n_bfd = bfd_openr (filename, target); 394 if (n_bfd != NULL) 395 { 396 n_bfd->lto_output = archive->lto_output; 397 n_bfd->no_export = archive->no_export; 398 n_bfd->my_archive = archive; 399 } 400 return n_bfd; 401 } 402 403 static bfd * 404 find_nested_archive (const char *filename, bfd *arch_bfd) 405 { 406 bfd *abfd; 407 408 /* PR 15140: Don't allow a nested archive pointing to itself. */ 409 if (filename_cmp (filename, arch_bfd->filename) == 0) 410 { 411 bfd_set_error (bfd_error_malformed_archive); 412 return NULL; 413 } 414 415 for (abfd = arch_bfd->nested_archives; 416 abfd != NULL; 417 abfd = abfd->archive_next) 418 { 419 if (filename_cmp (filename, abfd->filename) == 0) 420 return abfd; 421 } 422 abfd = open_nested_file (filename, arch_bfd); 423 if (abfd) 424 { 425 abfd->archive_next = arch_bfd->nested_archives; 426 arch_bfd->nested_archives = abfd; 427 } 428 return abfd; 429 } 430 431 /* The name begins with space. Hence the rest of the name is an index into 432 the string table. */ 433 434 static char * 435 get_extended_arelt_filename (bfd *arch, const char *name, file_ptr *originp) 436 { 437 unsigned long table_index = 0; 438 const char *endp; 439 440 /* Should extract string so that I can guarantee not to overflow into 441 the next region, but I'm too lazy. */ 442 errno = 0; 443 /* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */ 444 table_index = strtol (name + 1, (char **) &endp, 10); 445 if (errno != 0 || table_index >= bfd_ardata (arch)->extended_names_size) 446 { 447 bfd_set_error (bfd_error_malformed_archive); 448 return NULL; 449 } 450 /* In a thin archive, a member of an archive-within-an-archive 451 will have the offset in the inner archive encoded here. */ 452 if (bfd_is_thin_archive (arch) && endp != NULL && *endp == ':') 453 { 454 file_ptr origin = strtol (endp + 1, NULL, 10); 455 456 if (errno != 0) 457 { 458 bfd_set_error (bfd_error_malformed_archive); 459 return NULL; 460 } 461 *originp = origin; 462 } 463 else 464 *originp = 0; 465 466 return bfd_ardata (arch)->extended_names + table_index; 467 } 468 469 /* This functions reads an arch header and returns an areltdata pointer, or 470 NULL on error. 471 472 Presumes the file pointer is already in the right place (ie pointing 473 to the ar_hdr in the file). Moves the file pointer; on success it 474 should be pointing to the front of the file contents; on failure it 475 could have been moved arbitrarily. */ 476 477 void * 478 _bfd_generic_read_ar_hdr (bfd *abfd) 479 { 480 return _bfd_generic_read_ar_hdr_mag (abfd, NULL); 481 } 482 483 /* Alpha ECOFF uses an optional different ARFMAG value, so we have a 484 variant of _bfd_generic_read_ar_hdr which accepts a magic string. */ 485 486 void * 487 _bfd_generic_read_ar_hdr_mag (bfd *abfd, const char *mag) 488 { 489 struct ar_hdr hdr; 490 char *hdrp = (char *) &hdr; 491 bfd_size_type parsed_size; 492 struct areltdata *ared; 493 char *filename = NULL; 494 bfd_size_type namelen = 0; 495 bfd_size_type allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr); 496 char *allocptr = 0; 497 file_ptr origin = 0; 498 unsigned int extra_size = 0; 499 char fmag_save; 500 int scan; 501 502 if (bfd_bread (hdrp, sizeof (struct ar_hdr), abfd) != sizeof (struct ar_hdr)) 503 { 504 if (bfd_get_error () != bfd_error_system_call) 505 bfd_set_error (bfd_error_no_more_archived_files); 506 return NULL; 507 } 508 if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0 509 && (mag == NULL 510 || strncmp (hdr.ar_fmag, mag, 2) != 0)) 511 { 512 bfd_set_error (bfd_error_malformed_archive); 513 return NULL; 514 } 515 516 errno = 0; 517 fmag_save = hdr.ar_fmag[0]; 518 hdr.ar_fmag[0] = 0; 519 scan = sscanf (hdr.ar_size, "%" BFD_VMA_FMT "u", &parsed_size); 520 hdr.ar_fmag[0] = fmag_save; 521 if (scan != 1) 522 { 523 bfd_set_error (bfd_error_malformed_archive); 524 return NULL; 525 } 526 527 /* Extract the filename from the archive - there are two ways to 528 specify an extended name table, either the first char of the 529 name is a space, or it's a slash. */ 530 if ((hdr.ar_name[0] == '/' 531 || (hdr.ar_name[0] == ' ' 532 && memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL)) 533 && bfd_ardata (abfd)->extended_names != NULL) 534 { 535 filename = get_extended_arelt_filename (abfd, hdr.ar_name, &origin); 536 if (filename == NULL) 537 return NULL; 538 } 539 /* BSD4.4-style long filename. */ 540 else if (is_bsd44_extended_name (hdr.ar_name)) 541 { 542 /* BSD-4.4 extended name */ 543 namelen = atoi (&hdr.ar_name[3]); 544 allocsize += namelen + 1; 545 parsed_size -= namelen; 546 extra_size = namelen; 547 548 allocptr = (char *) bfd_zmalloc (allocsize); 549 if (allocptr == NULL) 550 return NULL; 551 filename = (allocptr 552 + sizeof (struct areltdata) 553 + sizeof (struct ar_hdr)); 554 if (bfd_bread (filename, namelen, abfd) != namelen) 555 { 556 free (allocptr); 557 if (bfd_get_error () != bfd_error_system_call) 558 bfd_set_error (bfd_error_no_more_archived_files); 559 return NULL; 560 } 561 filename[namelen] = '\0'; 562 } 563 else 564 { 565 /* We judge the end of the name by looking for '/' or ' '. 566 Note: The SYSV format (terminated by '/') allows embedded 567 spaces, so only look for ' ' if we don't find '/'. */ 568 569 char *e; 570 e = (char *) memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd)); 571 if (e == NULL) 572 { 573 e = (char *) memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)); 574 if (e == NULL) 575 e = (char *) memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd)); 576 } 577 578 if (e != NULL) 579 namelen = e - hdr.ar_name; 580 else 581 { 582 /* If we didn't find a termination character, then the name 583 must be the entire field. */ 584 namelen = ar_maxnamelen (abfd); 585 } 586 587 allocsize += namelen + 1; 588 } 589 590 if (!allocptr) 591 { 592 allocptr = (char *) bfd_zmalloc (allocsize); 593 if (allocptr == NULL) 594 return NULL; 595 } 596 597 ared = (struct areltdata *) allocptr; 598 599 ared->arch_header = allocptr + sizeof (struct areltdata); 600 memcpy (ared->arch_header, &hdr, sizeof (struct ar_hdr)); 601 ared->parsed_size = parsed_size; 602 ared->extra_size = extra_size; 603 ared->origin = origin; 604 605 if (filename != NULL) 606 ared->filename = filename; 607 else 608 { 609 ared->filename = allocptr + (sizeof (struct areltdata) + 610 sizeof (struct ar_hdr)); 611 if (namelen) 612 memcpy (ared->filename, hdr.ar_name, namelen); 613 ared->filename[namelen] = '\0'; 614 } 615 616 return ared; 617 } 618 619 /* Append the relative pathname for a member of the thin archive 620 to the pathname of the directory containing the archive. */ 621 622 char * 623 _bfd_append_relative_path (bfd *arch, char *elt_name) 624 { 625 const char *arch_name = arch->filename; 626 const char *base_name = lbasename (arch_name); 627 size_t prefix_len; 628 char *filename; 629 630 if (base_name == arch_name) 631 return elt_name; 632 633 prefix_len = base_name - arch_name; 634 filename = (char *) bfd_alloc (arch, prefix_len + strlen (elt_name) + 1); 635 if (filename == NULL) 636 return NULL; 637 638 strncpy (filename, arch_name, prefix_len); 639 strcpy (filename + prefix_len, elt_name); 640 return filename; 641 } 642 643 /* This is an internal function; it's mainly used when indexing 644 through the archive symbol table, but also used to get the next 645 element, since it handles the bookkeeping so nicely for us. */ 646 647 bfd * 648 _bfd_get_elt_at_filepos (bfd *archive, file_ptr filepos) 649 { 650 struct areltdata *new_areldata; 651 bfd *n_bfd; 652 char *filename; 653 654 n_bfd = _bfd_look_for_bfd_in_cache (archive, filepos); 655 if (n_bfd) 656 return n_bfd; 657 658 if (0 > bfd_seek (archive, filepos, SEEK_SET)) 659 return NULL; 660 661 if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL) 662 return NULL; 663 664 filename = new_areldata->filename; 665 666 if (bfd_is_thin_archive (archive)) 667 { 668 /* This is a proxy entry for an external file. */ 669 if (! IS_ABSOLUTE_PATH (filename)) 670 { 671 filename = _bfd_append_relative_path (archive, filename); 672 if (filename == NULL) 673 { 674 free (new_areldata); 675 return NULL; 676 } 677 } 678 679 if (new_areldata->origin > 0) 680 { 681 /* This proxy entry refers to an element of a nested archive. 682 Locate the member of that archive and return a bfd for it. */ 683 bfd *ext_arch = find_nested_archive (filename, archive); 684 685 if (ext_arch == NULL 686 || ! bfd_check_format (ext_arch, bfd_archive)) 687 { 688 free (new_areldata); 689 return NULL; 690 } 691 n_bfd = _bfd_get_elt_at_filepos (ext_arch, new_areldata->origin); 692 if (n_bfd == NULL) 693 { 694 free (new_areldata); 695 return NULL; 696 } 697 n_bfd->proxy_origin = bfd_tell (archive); 698 699 /* Copy BFD_COMPRESS, BFD_DECOMPRESS and BFD_COMPRESS_GABI 700 flags. */ 701 n_bfd->flags |= archive->flags & (BFD_COMPRESS 702 | BFD_DECOMPRESS 703 | BFD_COMPRESS_GABI); 704 705 return n_bfd; 706 } 707 708 /* It's not an element of a nested archive; 709 open the external file as a bfd. */ 710 n_bfd = open_nested_file (filename, archive); 711 if (n_bfd == NULL) 712 bfd_set_error (bfd_error_malformed_archive); 713 } 714 else 715 { 716 n_bfd = _bfd_create_empty_archive_element_shell (archive); 717 } 718 719 if (n_bfd == NULL) 720 { 721 free (new_areldata); 722 return NULL; 723 } 724 725 n_bfd->proxy_origin = bfd_tell (archive); 726 727 if (bfd_is_thin_archive (archive)) 728 { 729 n_bfd->origin = 0; 730 } 731 else 732 { 733 n_bfd->origin = n_bfd->proxy_origin; 734 n_bfd->filename = bfd_strdup (filename); 735 if (n_bfd->filename == NULL) 736 goto out; 737 } 738 739 n_bfd->arelt_data = new_areldata; 740 741 /* Copy BFD_COMPRESS, BFD_DECOMPRESS and BFD_COMPRESS_GABI flags. */ 742 n_bfd->flags |= archive->flags & (BFD_COMPRESS 743 | BFD_DECOMPRESS 744 | BFD_COMPRESS_GABI); 745 746 /* Copy is_linker_input. */ 747 n_bfd->is_linker_input = archive->is_linker_input; 748 749 if (archive->no_element_cache 750 || _bfd_add_bfd_to_archive_cache (archive, filepos, n_bfd)) 751 return n_bfd; 752 753 out: 754 free (new_areldata); 755 n_bfd->arelt_data = NULL; 756 bfd_close (n_bfd); 757 return NULL; 758 } 759 760 /* Return the BFD which is referenced by the symbol in ABFD indexed by 761 SYM_INDEX. SYM_INDEX should have been returned by bfd_get_next_mapent. */ 762 763 bfd * 764 _bfd_generic_get_elt_at_index (bfd *abfd, symindex sym_index) 765 { 766 carsym *entry; 767 768 entry = bfd_ardata (abfd)->symdefs + sym_index; 769 return _bfd_get_elt_at_filepos (abfd, entry->file_offset); 770 } 771 772 bfd * 773 _bfd_noarchive_get_elt_at_index (bfd *abfd, 774 symindex sym_index ATTRIBUTE_UNUSED) 775 { 776 return (bfd *) _bfd_ptr_bfd_null_error (abfd); 777 } 778 779 /* 780 FUNCTION 781 bfd_openr_next_archived_file 782 783 SYNOPSIS 784 bfd *bfd_openr_next_archived_file (bfd *archive, bfd *previous); 785 786 DESCRIPTION 787 Provided a BFD, @var{archive}, containing an archive and NULL, open 788 an input BFD on the first contained element and returns that. 789 Subsequent calls should pass the archive and the previous return 790 value to return a created BFD to the next contained element. NULL 791 is returned when there are no more. 792 Note - if you want to process the bfd returned by this call be 793 sure to call bfd_check_format() on it first. 794 */ 795 796 bfd * 797 bfd_openr_next_archived_file (bfd *archive, bfd *last_file) 798 { 799 if ((bfd_get_format (archive) != bfd_archive) 800 || (archive->direction == write_direction)) 801 { 802 bfd_set_error (bfd_error_invalid_operation); 803 return NULL; 804 } 805 806 return BFD_SEND (archive, 807 openr_next_archived_file, (archive, last_file)); 808 } 809 810 bfd * 811 bfd_generic_openr_next_archived_file (bfd *archive, bfd *last_file) 812 { 813 ufile_ptr filestart; 814 815 if (!last_file) 816 filestart = bfd_ardata (archive)->first_file_filepos; 817 else 818 { 819 filestart = last_file->proxy_origin; 820 if (! bfd_is_thin_archive (archive)) 821 #if 0 822 /* OLD CODE */ 823 filestart += size; 824 /* Pad to an even boundary... 825 Note that last_file->origin can be odd in the case of 826 BSD-4.4-style element with a long odd size. */ 827 if (!strncmp(arch_hdr (last_file)->ar_name, "#1/", 3)) 828 size += strlen(normalize(last_file, last_file->filename)); 829 filestart += size % 2; 830 #endif 831 { 832 bfd_size_type size = arelt_size (last_file); 833 834 filestart += size; 835 /* Pad to an even boundary... 836 Note that last_file->origin can be odd in the case of 837 BSD-4.4-style element with a long odd size. */ 838 filestart += filestart % 2; 839 if (filestart < last_file->proxy_origin) 840 { 841 /* Prevent looping. See PR19256. */ 842 bfd_set_error (bfd_error_malformed_archive); 843 return NULL; 844 } 845 } 846 } 847 848 return _bfd_get_elt_at_filepos (archive, filestart); 849 } 850 851 bfd * 852 _bfd_noarchive_openr_next_archived_file (bfd *archive, 853 bfd *last_file ATTRIBUTE_UNUSED) 854 { 855 return (bfd *) _bfd_ptr_bfd_null_error (archive); 856 } 857 858 const bfd_target * 859 bfd_generic_archive_p (bfd *abfd) 860 { 861 struct artdata *tdata_hold; 862 char armag[SARMAG + 1]; 863 bfd_size_type amt; 864 865 if (bfd_bread (armag, SARMAG, abfd) != SARMAG) 866 { 867 if (bfd_get_error () != bfd_error_system_call) 868 bfd_set_error (bfd_error_wrong_format); 869 return NULL; 870 } 871 872 bfd_set_thin_archive (abfd, strncmp (armag, ARMAGT, SARMAG) == 0); 873 874 if (strncmp (armag, ARMAG, SARMAG) != 0 875 && ! bfd_is_thin_archive (abfd)) 876 { 877 bfd_set_error (bfd_error_wrong_format); 878 return NULL; 879 } 880 881 tdata_hold = bfd_ardata (abfd); 882 883 amt = sizeof (struct artdata); 884 bfd_ardata (abfd) = (struct artdata *) bfd_zalloc (abfd, amt); 885 if (bfd_ardata (abfd) == NULL) 886 { 887 bfd_ardata (abfd) = tdata_hold; 888 return NULL; 889 } 890 891 bfd_ardata (abfd)->first_file_filepos = SARMAG; 892 /* Cleared by bfd_zalloc above. 893 bfd_ardata (abfd)->cache = NULL; 894 bfd_ardata (abfd)->archive_head = NULL; 895 bfd_ardata (abfd)->symdefs = NULL; 896 bfd_ardata (abfd)->extended_names = NULL; 897 bfd_ardata (abfd)->extended_names_size = 0; 898 bfd_ardata (abfd)->tdata = NULL; */ 899 900 if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd)) 901 || !BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd))) 902 { 903 if (bfd_get_error () != bfd_error_system_call) 904 bfd_set_error (bfd_error_wrong_format); 905 bfd_release (abfd, bfd_ardata (abfd)); 906 bfd_ardata (abfd) = tdata_hold; 907 return NULL; 908 } 909 910 if (abfd->target_defaulted && bfd_has_map (abfd)) 911 { 912 bfd *first; 913 unsigned int save; 914 915 /* This archive has a map, so we may presume that the contents 916 are object files. Make sure that if the first file in the 917 archive can be recognized as an object file, it is for this 918 target. If not, assume that this is the wrong format. If 919 the first file is not an object file, somebody is doing 920 something weird, and we permit it so that ar -t will work. 921 922 This is done because any normal format will recognize any 923 normal archive, regardless of the format of the object files. 924 We do accept an empty archive. */ 925 926 save = abfd->no_element_cache; 927 abfd->no_element_cache = 1; 928 first = bfd_openr_next_archived_file (abfd, NULL); 929 abfd->no_element_cache = save; 930 if (first != NULL) 931 { 932 first->target_defaulted = FALSE; 933 if (bfd_check_format (first, bfd_object) 934 && first->xvec != abfd->xvec) 935 bfd_set_error (bfd_error_wrong_object_format); 936 bfd_close (first); 937 } 938 } 939 940 return abfd->xvec; 941 } 942 943 /* Some constants for a 32 bit BSD archive structure. We do not 944 support 64 bit archives presently; so far as I know, none actually 945 exist. Supporting them would require changing these constants, and 946 changing some H_GET_32 to H_GET_64. */ 947 948 /* The size of an external symdef structure. */ 949 #define BSD_SYMDEF_SIZE 8 950 951 /* The offset from the start of a symdef structure to the file offset. */ 952 #define BSD_SYMDEF_OFFSET_SIZE 4 953 954 /* The size of the symdef count. */ 955 #define BSD_SYMDEF_COUNT_SIZE 4 956 957 /* The size of the string count. */ 958 #define BSD_STRING_COUNT_SIZE 4 959 960 /* Read a BSD-style archive symbol table. Returns FALSE on error, 961 TRUE otherwise. */ 962 963 static bfd_boolean 964 do_slurp_bsd_armap (bfd *abfd) 965 { 966 struct areltdata *mapdata; 967 unsigned int counter; 968 bfd_byte *raw_armap, *rbase; 969 struct artdata *ardata = bfd_ardata (abfd); 970 char *stringbase; 971 bfd_size_type parsed_size, amt; 972 carsym *set; 973 974 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); 975 if (mapdata == NULL) 976 return FALSE; 977 parsed_size = mapdata->parsed_size; 978 free (mapdata); 979 /* PR 17512: file: 883ff754. */ 980 /* PR 17512: file: 0458885f. */ 981 if (parsed_size < 4) 982 return FALSE; 983 984 raw_armap = (bfd_byte *) bfd_alloc (abfd, parsed_size); 985 if (raw_armap == NULL) 986 return FALSE; 987 988 if (bfd_bread (raw_armap, parsed_size, abfd) != parsed_size) 989 { 990 if (bfd_get_error () != bfd_error_system_call) 991 bfd_set_error (bfd_error_malformed_archive); 992 byebye: 993 bfd_release (abfd, raw_armap); 994 return FALSE; 995 } 996 997 ardata->symdef_count = H_GET_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE; 998 if (ardata->symdef_count * BSD_SYMDEF_SIZE > 999 parsed_size - BSD_SYMDEF_COUNT_SIZE) 1000 { 1001 /* Probably we're using the wrong byte ordering. */ 1002 bfd_set_error (bfd_error_wrong_format); 1003 goto byebye; 1004 } 1005 1006 rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE; 1007 stringbase = ((char *) rbase 1008 + ardata->symdef_count * BSD_SYMDEF_SIZE 1009 + BSD_STRING_COUNT_SIZE); 1010 amt = ardata->symdef_count * sizeof (carsym); 1011 ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt); 1012 if (!ardata->symdefs) 1013 return FALSE; 1014 1015 for (counter = 0, set = ardata->symdefs; 1016 counter < ardata->symdef_count; 1017 counter++, set++, rbase += BSD_SYMDEF_SIZE) 1018 { 1019 set->name = H_GET_32 (abfd, rbase) + stringbase; 1020 set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); 1021 } 1022 1023 ardata->first_file_filepos = bfd_tell (abfd); 1024 /* Pad to an even boundary if you have to. */ 1025 ardata->first_file_filepos += (ardata->first_file_filepos) % 2; 1026 /* FIXME, we should provide some way to free raw_ardata when 1027 we are done using the strings from it. For now, it seems 1028 to be allocated on an objalloc anyway... */ 1029 abfd->has_armap = TRUE; 1030 return TRUE; 1031 } 1032 1033 /* Read a COFF archive symbol table. Returns FALSE on error, TRUE 1034 otherwise. */ 1035 1036 static bfd_boolean 1037 do_slurp_coff_armap (bfd *abfd) 1038 { 1039 struct areltdata *mapdata; 1040 int *raw_armap, *rawptr; 1041 struct artdata *ardata = bfd_ardata (abfd); 1042 char *stringbase; 1043 char *stringend; 1044 bfd_size_type stringsize; 1045 bfd_size_type parsed_size; 1046 carsym *carsyms; 1047 bfd_size_type nsymz; /* Number of symbols in armap. */ 1048 bfd_vma (*swap) (const void *); 1049 char int_buf[sizeof (long)]; 1050 bfd_size_type carsym_size, ptrsize; 1051 unsigned int i; 1052 1053 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); 1054 if (mapdata == NULL) 1055 return FALSE; 1056 parsed_size = mapdata->parsed_size; 1057 free (mapdata); 1058 1059 if (bfd_bread (int_buf, 4, abfd) != 4) 1060 { 1061 if (bfd_get_error () != bfd_error_system_call) 1062 bfd_set_error (bfd_error_malformed_archive); 1063 return FALSE; 1064 } 1065 /* It seems that all numeric information in a coff archive is always 1066 in big endian format, nomatter the host or target. */ 1067 swap = bfd_getb32; 1068 nsymz = bfd_getb32 (int_buf); 1069 stringsize = parsed_size - (4 * nsymz) - 4; 1070 1071 /* The coff armap must be read sequentially. So we construct a 1072 bsd-style one in core all at once, for simplicity. */ 1073 1074 if (nsymz > ~ (bfd_size_type) 0 / sizeof (carsym)) 1075 { 1076 bfd_set_error (bfd_error_no_memory); 1077 return FALSE; 1078 } 1079 1080 carsym_size = (nsymz * sizeof (carsym)); 1081 ptrsize = (4 * nsymz); 1082 1083 if (carsym_size + stringsize + 1 <= carsym_size) 1084 { 1085 bfd_set_error (bfd_error_no_memory); 1086 return FALSE; 1087 } 1088 1089 ardata->symdefs = (struct carsym *) bfd_alloc (abfd, 1090 carsym_size + stringsize + 1); 1091 if (ardata->symdefs == NULL) 1092 return FALSE; 1093 carsyms = ardata->symdefs; 1094 stringbase = ((char *) ardata->symdefs) + carsym_size; 1095 1096 /* Allocate and read in the raw offsets. */ 1097 raw_armap = (int *) bfd_alloc (abfd, ptrsize); 1098 if (raw_armap == NULL) 1099 goto release_symdefs; 1100 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize 1101 || (bfd_bread (stringbase, stringsize, abfd) != stringsize)) 1102 { 1103 if (bfd_get_error () != bfd_error_system_call) 1104 bfd_set_error (bfd_error_malformed_archive); 1105 goto release_symdefs; 1106 } 1107 1108 /* OK, build the carsyms. */ 1109 stringend = stringbase + stringsize; 1110 *stringend = 0; 1111 for (i = 0; i < nsymz; i++) 1112 { 1113 rawptr = raw_armap + i; 1114 carsyms->file_offset = swap ((bfd_byte *) rawptr); 1115 carsyms->name = stringbase; 1116 stringbase += strlen (stringbase); 1117 if (stringbase != stringend) 1118 ++stringbase; 1119 carsyms++; 1120 } 1121 1122 ardata->symdef_count = nsymz; 1123 ardata->first_file_filepos = bfd_tell (abfd); 1124 /* Pad to an even boundary if you have to. */ 1125 ardata->first_file_filepos += (ardata->first_file_filepos) % 2; 1126 1127 abfd->has_armap = TRUE; 1128 bfd_release (abfd, raw_armap); 1129 1130 /* Check for a second archive header (as used by PE). */ 1131 { 1132 struct areltdata *tmp; 1133 1134 bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET); 1135 tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd); 1136 if (tmp != NULL) 1137 { 1138 if (tmp->arch_header[0] == '/' 1139 && tmp->arch_header[1] == ' ') 1140 { 1141 ardata->first_file_filepos += 1142 (tmp->parsed_size + sizeof (struct ar_hdr) + 1) & ~(unsigned) 1; 1143 } 1144 free (tmp); 1145 } 1146 } 1147 1148 return TRUE; 1149 1150 release_symdefs: 1151 bfd_release (abfd, (ardata)->symdefs); 1152 return FALSE; 1153 } 1154 1155 /* This routine can handle either coff-style or bsd-style armaps 1156 (archive symbol table). Returns FALSE on error, TRUE otherwise */ 1157 1158 bfd_boolean 1159 bfd_slurp_armap (bfd *abfd) 1160 { 1161 char nextname[17]; 1162 int i = bfd_bread (nextname, 16, abfd); 1163 1164 if (i == 0) 1165 return TRUE; 1166 if (i != 16) 1167 return FALSE; 1168 1169 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) 1170 return FALSE; 1171 1172 if (CONST_STRNEQ (nextname, "__.SYMDEF ") 1173 || CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */ 1174 return do_slurp_bsd_armap (abfd); 1175 else if (CONST_STRNEQ (nextname, "/ ")) 1176 return do_slurp_coff_armap (abfd); 1177 else if (CONST_STRNEQ (nextname, "/SYM64/ ")) 1178 { 1179 /* 64bit (Irix 6) archive. */ 1180 #ifdef BFD64 1181 return _bfd_archive_64_bit_slurp_armap (abfd); 1182 #else 1183 bfd_set_error (bfd_error_wrong_format); 1184 return FALSE; 1185 #endif 1186 } 1187 else if (CONST_STRNEQ (nextname, "#1/20 ")) 1188 { 1189 /* Mach-O has a special name for armap when the map is sorted by name. 1190 However because this name has a space it is slightly more difficult 1191 to check it. */ 1192 struct ar_hdr hdr; 1193 char extname[21]; 1194 1195 if (bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr)) 1196 return FALSE; 1197 /* Read the extended name. We know its length. */ 1198 if (bfd_bread (extname, 20, abfd) != 20) 1199 return FALSE; 1200 if (bfd_seek (abfd, -(file_ptr) (sizeof (hdr) + 20), SEEK_CUR) != 0) 1201 return FALSE; 1202 extname[20] = 0; 1203 if (CONST_STRNEQ (extname, "__.SYMDEF SORTED") 1204 || CONST_STRNEQ (extname, "__.SYMDEF")) 1205 return do_slurp_bsd_armap (abfd); 1206 } 1207 1208 abfd->has_armap = FALSE; 1209 return TRUE; 1210 } 1211 1212 /** Extended name table. 1213 1214 Normally archives support only 14-character filenames. 1215 1216 Intel has extended the format: longer names are stored in a special 1217 element (the first in the archive, or second if there is an armap); 1218 the name in the ar_hdr is replaced by <space><index into filename 1219 element>. Index is the P.R. of an int (decimal). Data General have 1220 extended the format by using the prefix // for the special element. */ 1221 1222 /* Returns FALSE on error, TRUE otherwise. */ 1223 1224 bfd_boolean 1225 _bfd_slurp_extended_name_table (bfd *abfd) 1226 { 1227 char nextname[17]; 1228 struct areltdata *namedata; 1229 bfd_size_type amt; 1230 1231 /* FIXME: Formatting sucks here, and in case of failure of BFD_READ, 1232 we probably don't want to return TRUE. */ 1233 if (bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET) != 0) 1234 return FALSE; 1235 1236 if (bfd_bread (nextname, 16, abfd) == 16) 1237 { 1238 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) 1239 return FALSE; 1240 1241 if (! CONST_STRNEQ (nextname, "ARFILENAMES/ ") 1242 && ! CONST_STRNEQ (nextname, "// ")) 1243 { 1244 bfd_ardata (abfd)->extended_names = NULL; 1245 bfd_ardata (abfd)->extended_names_size = 0; 1246 return TRUE; 1247 } 1248 1249 namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd); 1250 if (namedata == NULL) 1251 return FALSE; 1252 1253 amt = namedata->parsed_size; 1254 if (amt + 1 == 0) 1255 goto byebye; 1256 1257 bfd_ardata (abfd)->extended_names_size = amt; 1258 bfd_ardata (abfd)->extended_names = (char *) bfd_alloc (abfd, amt + 1); 1259 if (bfd_ardata (abfd)->extended_names == NULL) 1260 { 1261 byebye: 1262 free (namedata); 1263 bfd_ardata (abfd)->extended_names = NULL; 1264 bfd_ardata (abfd)->extended_names_size = 0; 1265 return FALSE; 1266 } 1267 1268 if (bfd_bread (bfd_ardata (abfd)->extended_names, amt, abfd) != amt) 1269 { 1270 if (bfd_get_error () != bfd_error_system_call) 1271 bfd_set_error (bfd_error_malformed_archive); 1272 bfd_release (abfd, (bfd_ardata (abfd)->extended_names)); 1273 bfd_ardata (abfd)->extended_names = NULL; 1274 goto byebye; 1275 } 1276 bfd_ardata (abfd)->extended_names[amt] = 0; 1277 1278 /* Since the archive is supposed to be printable if it contains 1279 text, the entries in the list are newline-padded, not null 1280 padded. In SVR4-style archives, the names also have a 1281 trailing '/'. DOS/NT created archive often have \ in them 1282 We'll fix all problems here. */ 1283 { 1284 char *ext_names = bfd_ardata (abfd)->extended_names; 1285 char *temp = ext_names; 1286 char *limit = temp + namedata->parsed_size; 1287 1288 for (; temp < limit; ++temp) 1289 { 1290 if (*temp == ARFMAG[1]) 1291 temp[temp > ext_names && temp[-1] == '/' ? -1 : 0] = '\0'; 1292 if (*temp == '\\') 1293 *temp = '/'; 1294 } 1295 *limit = '\0'; 1296 } 1297 1298 /* Pad to an even boundary if you have to. */ 1299 bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd); 1300 bfd_ardata (abfd)->first_file_filepos += 1301 (bfd_ardata (abfd)->first_file_filepos) % 2; 1302 1303 free (namedata); 1304 } 1305 return TRUE; 1306 } 1307 1308 #ifdef VMS 1309 1310 /* Return a copy of the stuff in the filename between any :]> and a 1311 semicolon. */ 1312 1313 static const char * 1314 normalize (bfd *abfd, const char *file) 1315 { 1316 const char *first; 1317 const char *last; 1318 char *copy; 1319 1320 if (abfd->flags & BFD_ARCHIVE_FULL_PATH) 1321 return file; 1322 1323 first = file + strlen (file) - 1; 1324 last = first + 1; 1325 1326 while (first != file) 1327 { 1328 if (*first == ';') 1329 last = first; 1330 if (*first == ':' || *first == ']' || *first == '>') 1331 { 1332 first++; 1333 break; 1334 } 1335 first--; 1336 } 1337 1338 copy = bfd_alloc (abfd, last - first + 1); 1339 if (copy == NULL) 1340 return NULL; 1341 1342 memcpy (copy, first, last - first); 1343 copy[last - first] = 0; 1344 1345 return copy; 1346 } 1347 1348 #else 1349 static const char * 1350 normalize (bfd *abfd, const char *file) 1351 { 1352 if (abfd->flags & BFD_ARCHIVE_FULL_PATH) 1353 return file; 1354 return lbasename (file); 1355 } 1356 #endif 1357 1358 /* Adjust a relative path name based on the reference path. 1359 For example: 1360 1361 Relative path Reference path Result 1362 ------------- -------------- ------ 1363 bar.o lib.a bar.o 1364 foo/bar.o lib.a foo/bar.o 1365 bar.o foo/lib.a ../bar.o 1366 foo/bar.o baz/lib.a ../foo/bar.o 1367 bar.o ../lib.a <parent of current dir>/bar.o 1368 ; ../bar.o ../lib.a bar.o 1369 ; ../bar.o lib.a ../bar.o 1370 foo/bar.o ../lib.a <parent of current dir>/foo/bar.o 1371 bar.o ../../lib.a <grandparent>/<parent>/bar.o 1372 bar.o foo/baz/lib.a ../../bar.o 1373 1374 Note - the semicolons above are there to prevent the BFD chew 1375 utility from interpreting those lines as prototypes to put into 1376 the autogenerated bfd.h header... 1377 1378 Note - the string is returned in a static buffer. */ 1379 1380 static const char * 1381 adjust_relative_path (const char * path, const char * ref_path) 1382 { 1383 static char *pathbuf = NULL; 1384 static unsigned int pathbuf_len = 0; 1385 const char *pathp; 1386 const char *refp; 1387 char * lpath; 1388 char * rpath; 1389 unsigned int len; 1390 unsigned int dir_up = 0; 1391 unsigned int dir_down = 0; 1392 char *newp; 1393 char * pwd = getpwd (); 1394 const char * down; 1395 1396 /* Remove symlinks, '.' and '..' from the paths, if possible. */ 1397 lpath = lrealpath (path); 1398 pathp = lpath == NULL ? path : lpath; 1399 1400 rpath = lrealpath (ref_path); 1401 refp = rpath == NULL ? ref_path : rpath; 1402 1403 /* Remove common leading path elements. */ 1404 for (;;) 1405 { 1406 const char *e1 = pathp; 1407 const char *e2 = refp; 1408 1409 while (*e1 && ! IS_DIR_SEPARATOR (*e1)) 1410 ++e1; 1411 while (*e2 && ! IS_DIR_SEPARATOR (*e2)) 1412 ++e2; 1413 if (*e1 == '\0' || *e2 == '\0' || e1 - pathp != e2 - refp 1414 || filename_ncmp (pathp, refp, e1 - pathp) != 0) 1415 break; 1416 pathp = e1 + 1; 1417 refp = e2 + 1; 1418 } 1419 1420 len = strlen (pathp) + 1; 1421 /* For each leading path element in the reference path, 1422 insert "../" into the path. */ 1423 for (; *refp; ++refp) 1424 if (IS_DIR_SEPARATOR (*refp)) 1425 { 1426 /* PR 12710: If the path element is "../" then instead of 1427 inserting "../" we need to insert the name of the directory 1428 at the current level. */ 1429 if (refp > ref_path + 1 1430 && refp[-1] == '.' 1431 && refp[-2] == '.') 1432 dir_down ++; 1433 else 1434 dir_up ++; 1435 } 1436 1437 /* If the lrealpath calls above succeeded then we should never 1438 see dir_up and dir_down both being non-zero. */ 1439 1440 len += 3 * dir_up; 1441 1442 if (dir_down) 1443 { 1444 down = pwd + strlen (pwd) - 1; 1445 1446 while (dir_down && down > pwd) 1447 { 1448 if (IS_DIR_SEPARATOR (*down)) 1449 --dir_down; 1450 } 1451 BFD_ASSERT (dir_down == 0); 1452 len += strlen (down) + 1; 1453 } 1454 else 1455 down = NULL; 1456 1457 if (len > pathbuf_len) 1458 { 1459 if (pathbuf != NULL) 1460 free (pathbuf); 1461 pathbuf_len = 0; 1462 pathbuf = (char *) bfd_malloc (len); 1463 if (pathbuf == NULL) 1464 goto out; 1465 pathbuf_len = len; 1466 } 1467 1468 newp = pathbuf; 1469 while (dir_up-- > 0) 1470 { 1471 /* FIXME: Support Windows style path separators as well. */ 1472 strcpy (newp, "../"); 1473 newp += 3; 1474 } 1475 1476 if (down) 1477 sprintf (newp, "%s/%s", down, pathp); 1478 else 1479 strcpy (newp, pathp); 1480 1481 out: 1482 free (lpath); 1483 free (rpath); 1484 return pathbuf; 1485 } 1486 1487 /* Build a BFD style extended name table. */ 1488 1489 bfd_boolean 1490 _bfd_archive_bsd_construct_extended_name_table (bfd *abfd, 1491 char **tabloc, 1492 bfd_size_type *tablen, 1493 const char **name) 1494 { 1495 *name = "ARFILENAMES/"; 1496 return _bfd_construct_extended_name_table (abfd, FALSE, tabloc, tablen); 1497 } 1498 1499 /* Build an SVR4 style extended name table. */ 1500 1501 bfd_boolean 1502 _bfd_archive_coff_construct_extended_name_table (bfd *abfd, 1503 char **tabloc, 1504 bfd_size_type *tablen, 1505 const char **name) 1506 { 1507 *name = "//"; 1508 return _bfd_construct_extended_name_table (abfd, TRUE, tabloc, tablen); 1509 } 1510 1511 bfd_boolean 1512 _bfd_noarchive_construct_extended_name_table (bfd *abfd ATTRIBUTE_UNUSED, 1513 char **tabloc ATTRIBUTE_UNUSED, 1514 bfd_size_type *len ATTRIBUTE_UNUSED, 1515 const char **name ATTRIBUTE_UNUSED) 1516 { 1517 return TRUE; 1518 } 1519 1520 /* Follows archive_head and produces an extended name table if 1521 necessary. Returns (in tabloc) a pointer to an extended name 1522 table, and in tablen the length of the table. If it makes an entry 1523 it clobbers the filename so that the element may be written without 1524 further massage. Returns TRUE if it ran successfully, FALSE if 1525 something went wrong. A successful return may still involve a 1526 zero-length tablen! */ 1527 1528 bfd_boolean 1529 _bfd_construct_extended_name_table (bfd *abfd, 1530 bfd_boolean trailing_slash, 1531 char **tabloc, 1532 bfd_size_type *tablen) 1533 { 1534 unsigned int maxname = ar_maxnamelen (abfd); 1535 bfd_size_type total_namelen = 0; 1536 bfd *current; 1537 char *strptr; 1538 const char *last_filename; 1539 long last_stroff; 1540 1541 *tablen = 0; 1542 last_filename = NULL; 1543 1544 /* Figure out how long the table should be. */ 1545 for (current = abfd->archive_head; 1546 current != NULL; 1547 current = current->archive_next) 1548 { 1549 const char *normal; 1550 unsigned int thislen; 1551 1552 if (bfd_is_thin_archive (abfd)) 1553 { 1554 const char *filename = current->filename; 1555 1556 /* If the element being added is a member of another archive 1557 (i.e., we are flattening), use the containing archive's name. */ 1558 if (current->my_archive 1559 && ! bfd_is_thin_archive (current->my_archive)) 1560 filename = current->my_archive->filename; 1561 1562 /* If the path is the same as the previous path seen, 1563 reuse it. This can happen when flattening a thin 1564 archive that contains other archives. */ 1565 if (last_filename && filename_cmp (last_filename, filename) == 0) 1566 continue; 1567 1568 last_filename = filename; 1569 1570 /* If the path is relative, adjust it relative to 1571 the containing archive. */ 1572 if (! IS_ABSOLUTE_PATH (filename) 1573 && ! IS_ABSOLUTE_PATH (abfd->filename)) 1574 normal = adjust_relative_path (filename, abfd->filename); 1575 else 1576 normal = filename; 1577 1578 /* In a thin archive, always store the full pathname 1579 in the extended name table. */ 1580 total_namelen += strlen (normal) + 1; 1581 if (trailing_slash) 1582 /* Leave room for trailing slash. */ 1583 ++total_namelen; 1584 1585 continue; 1586 } 1587 1588 normal = normalize (abfd, current->filename); 1589 if (normal == NULL) 1590 return FALSE; 1591 1592 thislen = strlen (normal); 1593 1594 if (thislen > maxname 1595 && (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) 1596 thislen = maxname; 1597 1598 if (thislen > maxname) 1599 { 1600 /* Add one to leave room for \n. */ 1601 total_namelen += thislen + 1; 1602 if (trailing_slash) 1603 { 1604 /* Leave room for trailing slash. */ 1605 ++total_namelen; 1606 } 1607 } 1608 else 1609 { 1610 struct ar_hdr *hdr = arch_hdr (current); 1611 if (filename_ncmp (normal, hdr->ar_name, thislen) != 0 1612 || (thislen < sizeof hdr->ar_name 1613 && hdr->ar_name[thislen] != ar_padchar (current))) 1614 { 1615 /* Must have been using extended format even though it 1616 didn't need to. Fix it to use normal format. */ 1617 memcpy (hdr->ar_name, normal, thislen); 1618 if (thislen < maxname 1619 || (thislen == maxname && thislen < sizeof hdr->ar_name)) 1620 hdr->ar_name[thislen] = ar_padchar (current); 1621 } 1622 } 1623 } 1624 1625 if (total_namelen == 0) 1626 return TRUE; 1627 1628 *tabloc = (char *) bfd_alloc (abfd, total_namelen); 1629 if (*tabloc == NULL) 1630 return FALSE; 1631 1632 *tablen = total_namelen; 1633 strptr = *tabloc; 1634 1635 last_filename = NULL; 1636 last_stroff = 0; 1637 1638 for (current = abfd->archive_head; 1639 current != NULL; 1640 current = current->archive_next) 1641 { 1642 const char *normal; 1643 unsigned int thislen; 1644 long stroff; 1645 const char *filename = current->filename; 1646 1647 if (bfd_is_thin_archive (abfd)) 1648 { 1649 /* If the element being added is a member of another archive 1650 (i.e., we are flattening), use the containing archive's name. */ 1651 if (current->my_archive 1652 && ! bfd_is_thin_archive (current->my_archive)) 1653 filename = current->my_archive->filename; 1654 /* If the path is the same as the previous path seen, 1655 reuse it. This can happen when flattening a thin 1656 archive that contains other archives. 1657 If the path is relative, adjust it relative to 1658 the containing archive. */ 1659 if (last_filename && filename_cmp (last_filename, filename) == 0) 1660 normal = last_filename; 1661 else if (! IS_ABSOLUTE_PATH (filename) 1662 && ! IS_ABSOLUTE_PATH (abfd->filename)) 1663 normal = adjust_relative_path (filename, abfd->filename); 1664 else 1665 normal = filename; 1666 } 1667 else 1668 { 1669 normal = normalize (abfd, filename); 1670 if (normal == NULL) 1671 return FALSE; 1672 } 1673 1674 thislen = strlen (normal); 1675 if (thislen > maxname || bfd_is_thin_archive (abfd)) 1676 { 1677 /* Works for now; may need to be re-engineered if we 1678 encounter an oddball archive format and want to 1679 generalise this hack. */ 1680 struct ar_hdr *hdr = arch_hdr (current); 1681 if (normal == last_filename) 1682 stroff = last_stroff; 1683 else 1684 { 1685 last_filename = filename; 1686 stroff = strptr - *tabloc; 1687 last_stroff = stroff; 1688 memcpy (strptr, normal, thislen); 1689 strptr += thislen; 1690 if (trailing_slash) 1691 *strptr++ = '/'; 1692 *strptr++ = ARFMAG[1]; 1693 } 1694 hdr->ar_name[0] = ar_padchar (current); 1695 if (bfd_is_thin_archive (abfd) && current->origin > 0) 1696 { 1697 int len = snprintf (hdr->ar_name + 1, maxname - 1, "%-ld:", 1698 stroff); 1699 _bfd_ar_spacepad (hdr->ar_name + 1 + len, maxname - 1 - len, 1700 "%-ld", 1701 current->origin - sizeof (struct ar_hdr)); 1702 } 1703 else 1704 _bfd_ar_spacepad (hdr->ar_name + 1, maxname - 1, "%-ld", stroff); 1705 } 1706 } 1707 1708 return TRUE; 1709 } 1710 1711 /* Do not construct an extended name table but transforms name field into 1712 its extended form. */ 1713 1714 bfd_boolean 1715 _bfd_archive_bsd44_construct_extended_name_table (bfd *abfd, 1716 char **tabloc, 1717 bfd_size_type *tablen, 1718 const char **name) 1719 { 1720 unsigned int maxname = ar_maxnamelen (abfd); 1721 bfd *current; 1722 1723 *tablen = 0; 1724 *tabloc = NULL; 1725 *name = NULL; 1726 1727 for (current = abfd->archive_head; 1728 current != NULL; 1729 current = current->archive_next) 1730 { 1731 const char *normal = normalize (abfd, current->filename); 1732 int has_space = 0; 1733 unsigned int len; 1734 1735 if (normal == NULL) 1736 return FALSE; 1737 1738 for (len = 0; normal[len]; len++) 1739 if (normal[len] == ' ') 1740 has_space = 1; 1741 1742 if (len > maxname || has_space) 1743 { 1744 struct ar_hdr *hdr = arch_hdr (current); 1745 1746 len = (len + 3) & ~3; 1747 arch_eltdata (current)->extra_size = len; 1748 _bfd_ar_spacepad (hdr->ar_name, maxname, "#1/%lu", len); 1749 } 1750 } 1751 1752 return TRUE; 1753 } 1754 1755 /* Write an archive header. */ 1756 1757 bfd_boolean 1758 _bfd_generic_write_ar_hdr (bfd *archive, bfd *abfd) 1759 { 1760 struct ar_hdr *hdr = arch_hdr (abfd); 1761 1762 if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) 1763 return FALSE; 1764 return TRUE; 1765 } 1766 1767 /* Write an archive header using BSD4.4 convention. */ 1768 1769 bfd_boolean 1770 _bfd_bsd44_write_ar_hdr (bfd *archive, bfd *abfd) 1771 { 1772 struct ar_hdr *hdr = arch_hdr (abfd); 1773 1774 if (is_bsd44_extended_name (hdr->ar_name)) 1775 { 1776 /* This is a BSD 4.4 extended name. */ 1777 const char *fullname = normalize (abfd, abfd->filename); 1778 unsigned int len = strlen (fullname); 1779 unsigned int padded_len = (len + 3) & ~3; 1780 1781 BFD_ASSERT (padded_len == arch_eltdata (abfd)->extra_size); 1782 1783 if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), 1784 arch_eltdata (abfd)->parsed_size + padded_len)) 1785 return FALSE; 1786 1787 if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) 1788 return FALSE; 1789 1790 if (bfd_bwrite (fullname, len, archive) != len) 1791 return FALSE; 1792 1793 if (len & 3) 1794 { 1795 static const char pad[3] = { 0, 0, 0 }; 1796 1797 len = 4 - (len & 3); 1798 if (bfd_bwrite (pad, len, archive) != len) 1799 return FALSE; 1800 } 1801 } 1802 else 1803 { 1804 if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) 1805 return FALSE; 1806 } 1807 return TRUE; 1808 } 1809 1810 bfd_boolean 1811 _bfd_noarchive_write_ar_hdr (bfd *archive, bfd *abfd ATTRIBUTE_UNUSED) 1812 { 1813 return _bfd_bool_bfd_false_error (archive); 1814 } 1815 1816 /* A couple of functions for creating ar_hdrs. */ 1817 1818 #ifdef HPUX_LARGE_AR_IDS 1819 /* Function to encode large UID/GID values according to HP. */ 1820 1821 static void 1822 hpux_uid_gid_encode (char str[6], long int id) 1823 { 1824 int cnt; 1825 1826 str[5] = '@' + (id & 3); 1827 id >>= 2; 1828 1829 for (cnt = 4; cnt >= 0; --cnt, id >>= 6) 1830 str[cnt] = ' ' + (id & 0x3f); 1831 } 1832 #endif /* HPUX_LARGE_AR_IDS */ 1833 1834 #ifndef HAVE_GETUID 1835 #define getuid() 0 1836 #endif 1837 1838 #ifndef HAVE_GETGID 1839 #define getgid() 0 1840 #endif 1841 1842 /* Takes a filename, returns an arelt_data for it, or NULL if it can't 1843 make one. The filename must refer to a filename in the filesystem. 1844 The filename field of the ar_hdr will NOT be initialized. If member 1845 is set, and it's an in-memory bfd, we fake it. */ 1846 1847 static struct areltdata * 1848 bfd_ar_hdr_from_filesystem (bfd *abfd, const char *filename, bfd *member) 1849 { 1850 struct stat status; 1851 struct areltdata *ared; 1852 struct ar_hdr *hdr; 1853 bfd_size_type amt; 1854 1855 if (member && (member->flags & BFD_IN_MEMORY) != 0) 1856 { 1857 /* Assume we just "made" the member, and fake it. */ 1858 struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream; 1859 time (&status.st_mtime); 1860 status.st_uid = getuid (); 1861 status.st_gid = getgid (); 1862 status.st_mode = 0644; 1863 status.st_size = bim->size; 1864 } 1865 else if (stat (filename, &status) != 0) 1866 { 1867 bfd_set_error (bfd_error_system_call); 1868 return NULL; 1869 } 1870 1871 /* If the caller requested that the BFD generate deterministic output, 1872 fake values for modification time, UID, GID, and file mode. */ 1873 if ((abfd->flags & BFD_DETERMINISTIC_OUTPUT) != 0) 1874 { 1875 status.st_mtime = 0; 1876 status.st_uid = 0; 1877 status.st_gid = 0; 1878 status.st_mode = 0644; 1879 } 1880 1881 amt = sizeof (struct ar_hdr) + sizeof (struct areltdata); 1882 ared = (struct areltdata *) bfd_zmalloc (amt); 1883 if (ared == NULL) 1884 return NULL; 1885 hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata)); 1886 1887 /* ar headers are space padded, not null padded! */ 1888 memset (hdr, ' ', sizeof (struct ar_hdr)); 1889 1890 _bfd_ar_spacepad (hdr->ar_date, sizeof (hdr->ar_date), "%-12ld", 1891 status.st_mtime); 1892 #ifdef HPUX_LARGE_AR_IDS 1893 /* HP has a very "special" way to handle UID/GID's with numeric values 1894 > 99999. */ 1895 if (status.st_uid > 99999) 1896 hpux_uid_gid_encode (hdr->ar_uid, (long) status.st_uid); 1897 else 1898 #endif 1899 _bfd_ar_spacepad (hdr->ar_uid, sizeof (hdr->ar_uid), "%ld", 1900 status.st_uid); 1901 #ifdef HPUX_LARGE_AR_IDS 1902 /* HP has a very "special" way to handle UID/GID's with numeric values 1903 > 99999. */ 1904 if (status.st_gid > 99999) 1905 hpux_uid_gid_encode (hdr->ar_gid, (long) status.st_gid); 1906 else 1907 #endif 1908 _bfd_ar_spacepad (hdr->ar_gid, sizeof (hdr->ar_gid), "%ld", 1909 status.st_gid); 1910 _bfd_ar_spacepad (hdr->ar_mode, sizeof (hdr->ar_mode), "%-8lo", 1911 status.st_mode); 1912 if (status.st_size - (bfd_size_type) status.st_size != 0) 1913 { 1914 bfd_set_error (bfd_error_file_too_big); 1915 free (ared); 1916 return NULL; 1917 } 1918 if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), status.st_size)) 1919 { 1920 free (ared); 1921 return NULL; 1922 } 1923 memcpy (hdr->ar_fmag, ARFMAG, 2); 1924 ared->parsed_size = status.st_size; 1925 ared->arch_header = (char *) hdr; 1926 1927 return ared; 1928 } 1929 1930 /* Analogous to stat call. */ 1931 1932 int 1933 bfd_generic_stat_arch_elt (bfd *abfd, struct stat *buf) 1934 { 1935 struct ar_hdr *hdr; 1936 char *aloser; 1937 1938 if (abfd->arelt_data == NULL) 1939 { 1940 bfd_set_error (bfd_error_invalid_operation); 1941 return -1; 1942 } 1943 1944 hdr = arch_hdr (abfd); 1945 /* PR 17512: file: 3d9e9fe9. */ 1946 if (hdr == NULL) 1947 return -1; 1948 #define foo(arelt, stelt, size) \ 1949 buf->stelt = strtol (hdr->arelt, &aloser, size); \ 1950 if (aloser == hdr->arelt) \ 1951 return -1; 1952 1953 /* Some platforms support special notations for large IDs. */ 1954 #ifdef HPUX_LARGE_AR_IDS 1955 # define foo2(arelt, stelt, size) \ 1956 if (hdr->arelt[5] == ' ') \ 1957 { \ 1958 foo (arelt, stelt, size); \ 1959 } \ 1960 else \ 1961 { \ 1962 int cnt; \ 1963 for (buf->stelt = cnt = 0; cnt < 5; ++cnt) \ 1964 { \ 1965 if (hdr->arelt[cnt] < ' ' || hdr->arelt[cnt] > ' ' + 0x3f) \ 1966 return -1; \ 1967 buf->stelt <<= 6; \ 1968 buf->stelt += hdr->arelt[cnt] - ' '; \ 1969 } \ 1970 if (hdr->arelt[5] < '@' || hdr->arelt[5] > '@' + 3) \ 1971 return -1; \ 1972 buf->stelt <<= 2; \ 1973 buf->stelt += hdr->arelt[5] - '@'; \ 1974 } 1975 #else 1976 # define foo2(arelt, stelt, size) foo (arelt, stelt, size) 1977 #endif 1978 1979 foo (ar_date, st_mtime, 10); 1980 foo2 (ar_uid, st_uid, 10); 1981 foo2 (ar_gid, st_gid, 10); 1982 foo (ar_mode, st_mode, 8); 1983 1984 buf->st_size = arch_eltdata (abfd)->parsed_size; 1985 1986 return 0; 1987 } 1988 1989 void 1990 bfd_dont_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) 1991 { 1992 /* FIXME: This interacts unpleasantly with ar's quick-append option. 1993 Fortunately ic960 users will never use that option. Fixing this 1994 is very hard; fortunately I know how to do it and will do so once 1995 intel's release is out the door. */ 1996 1997 struct ar_hdr *hdr = (struct ar_hdr *) arhdr; 1998 size_t length; 1999 const char *filename; 2000 size_t maxlen = ar_maxnamelen (abfd); 2001 2002 if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) 2003 { 2004 bfd_bsd_truncate_arname (abfd, pathname, arhdr); 2005 return; 2006 } 2007 2008 filename = normalize (abfd, pathname); 2009 if (filename == NULL) 2010 { 2011 /* FIXME */ 2012 abort (); 2013 } 2014 2015 length = strlen (filename); 2016 2017 if (length <= maxlen) 2018 memcpy (hdr->ar_name, filename, length); 2019 2020 /* Add the padding character if there is room for it. */ 2021 if (length < maxlen 2022 || (length == maxlen && length < sizeof hdr->ar_name)) 2023 (hdr->ar_name)[length] = ar_padchar (abfd); 2024 } 2025 2026 void 2027 bfd_bsd_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) 2028 { 2029 struct ar_hdr *hdr = (struct ar_hdr *) arhdr; 2030 size_t length; 2031 const char *filename = lbasename (pathname); 2032 size_t maxlen = ar_maxnamelen (abfd); 2033 2034 length = strlen (filename); 2035 2036 if (length <= maxlen) 2037 memcpy (hdr->ar_name, filename, length); 2038 else 2039 { 2040 /* pathname: meet procrustes */ 2041 memcpy (hdr->ar_name, filename, maxlen); 2042 length = maxlen; 2043 } 2044 2045 if (length < maxlen) 2046 (hdr->ar_name)[length] = ar_padchar (abfd); 2047 } 2048 2049 /* Store name into ar header. Truncates the name to fit. 2050 1> strip pathname to be just the basename. 2051 2> if it's short enuf to fit, stuff it in. 2052 3> If it doesn't end with .o, truncate it to fit 2053 4> truncate it before the .o, append .o, stuff THAT in. */ 2054 2055 /* This is what gnu ar does. It's better but incompatible with the 2056 bsd ar. */ 2057 2058 void 2059 bfd_gnu_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) 2060 { 2061 struct ar_hdr *hdr = (struct ar_hdr *) arhdr; 2062 size_t length; 2063 const char *filename = lbasename (pathname); 2064 size_t maxlen = ar_maxnamelen (abfd); 2065 2066 length = strlen (filename); 2067 2068 if (length <= maxlen) 2069 memcpy (hdr->ar_name, filename, length); 2070 else 2071 { 2072 /* pathname: meet procrustes. */ 2073 memcpy (hdr->ar_name, filename, maxlen); 2074 if ((filename[length - 2] == '.') && (filename[length - 1] == 'o')) 2075 { 2076 hdr->ar_name[maxlen - 2] = '.'; 2077 hdr->ar_name[maxlen - 1] = 'o'; 2078 } 2079 length = maxlen; 2080 } 2081 2082 if (length < 16) 2083 (hdr->ar_name)[length] = ar_padchar (abfd); 2084 } 2085 2086 void 2087 _bfd_noarchive_truncate_arname (bfd *abfd ATTRIBUTE_UNUSED, 2088 const char *pathname ATTRIBUTE_UNUSED, 2089 char *arhdr ATTRIBUTE_UNUSED) 2090 { 2091 } 2092 2093 /* The BFD is open for write and has its format set to bfd_archive. */ 2094 2095 bfd_boolean 2096 _bfd_write_archive_contents (bfd *arch) 2097 { 2098 bfd *current; 2099 char *etable = NULL; 2100 bfd_size_type elength = 0; 2101 const char *ename = NULL; 2102 bfd_boolean makemap = bfd_has_map (arch); 2103 /* If no .o's, don't bother to make a map. */ 2104 bfd_boolean hasobjects = FALSE; 2105 bfd_size_type wrote; 2106 int tries; 2107 char *armag; 2108 2109 /* Verify the viability of all entries; if any of them live in the 2110 filesystem (as opposed to living in an archive open for input) 2111 then construct a fresh ar_hdr for them. */ 2112 for (current = arch->archive_head; 2113 current != NULL; 2114 current = current->archive_next) 2115 { 2116 /* This check is checking the bfds for the objects we're reading 2117 from (which are usually either an object file or archive on 2118 disk), not the archive entries we're writing to. We don't 2119 actually create bfds for the archive members, we just copy 2120 them byte-wise when we write out the archive. */ 2121 if (bfd_write_p (current)) 2122 { 2123 bfd_set_error (bfd_error_invalid_operation); 2124 goto input_err; 2125 } 2126 if (!current->arelt_data) 2127 { 2128 current->arelt_data = 2129 bfd_ar_hdr_from_filesystem (arch, current->filename, current); 2130 if (!current->arelt_data) 2131 goto input_err; 2132 2133 /* Put in the file name. */ 2134 BFD_SEND (arch, _bfd_truncate_arname, 2135 (arch, current->filename, (char *) arch_hdr (current))); 2136 } 2137 2138 if (makemap && ! hasobjects) 2139 { /* Don't bother if we won't make a map! */ 2140 if ((bfd_check_format (current, bfd_object))) 2141 hasobjects = TRUE; 2142 } 2143 } 2144 2145 if (!BFD_SEND (arch, _bfd_construct_extended_name_table, 2146 (arch, &etable, &elength, &ename))) 2147 return FALSE; 2148 2149 if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0) 2150 return FALSE; 2151 armag = ARMAG; 2152 if (bfd_is_thin_archive (arch)) 2153 armag = ARMAGT; 2154 wrote = bfd_bwrite (armag, SARMAG, arch); 2155 if (wrote != SARMAG) 2156 return FALSE; 2157 2158 if (makemap && hasobjects) 2159 { 2160 if (! _bfd_compute_and_write_armap (arch, (unsigned int) elength)) 2161 return FALSE; 2162 } 2163 2164 if (elength != 0) 2165 { 2166 struct ar_hdr hdr; 2167 2168 memset (&hdr, ' ', sizeof (struct ar_hdr)); 2169 memcpy (hdr.ar_name, ename, strlen (ename)); 2170 /* Round size up to even number in archive header. */ 2171 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), 2172 (elength + 1) & ~(bfd_size_type) 1)) 2173 return FALSE; 2174 memcpy (hdr.ar_fmag, ARFMAG, 2); 2175 if ((bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 2176 != sizeof (struct ar_hdr)) 2177 || bfd_bwrite (etable, elength, arch) != elength) 2178 return FALSE; 2179 if ((elength % 2) == 1) 2180 { 2181 if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) 2182 return FALSE; 2183 } 2184 } 2185 2186 for (current = arch->archive_head; 2187 current != NULL; 2188 current = current->archive_next) 2189 { 2190 char buffer[DEFAULT_BUFFERSIZE]; 2191 bfd_size_type saved_size = arelt_size (current); 2192 bfd_size_type remaining = saved_size; 2193 struct ar_hdr *hdr = arch_hdr (current); 2194 2195 /* Write ar header. */ 2196 if (!_bfd_write_ar_hdr (arch, current)) 2197 return FALSE; 2198 /* Write filename if it is a 4.4BSD extended file, and add to size. */ 2199 if (!strncmp (hdr->ar_name, "#1/", 3)) 2200 { 2201 const char *normal = normalize (current, current->filename); 2202 unsigned int thislen = strlen (normal); 2203 if (bfd_write (normal, 1, thislen, arch) != thislen) 2204 return FALSE; 2205 saved_size += thislen; 2206 } 2207 if (bfd_is_thin_archive (arch)) 2208 continue; 2209 if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0) 2210 goto input_err; 2211 2212 while (remaining) 2213 { 2214 unsigned int amt = DEFAULT_BUFFERSIZE; 2215 2216 if (amt > remaining) 2217 amt = remaining; 2218 errno = 0; 2219 if (bfd_bread (buffer, amt, current) != amt) 2220 { 2221 if (bfd_get_error () != bfd_error_system_call) 2222 bfd_set_error (bfd_error_file_truncated); 2223 goto input_err; 2224 } 2225 if (bfd_bwrite (buffer, amt, arch) != amt) 2226 return FALSE; 2227 remaining -= amt; 2228 } 2229 2230 if ((arelt_size (current) % 2) == 1) 2231 { 2232 if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) 2233 return FALSE; 2234 } 2235 } 2236 2237 if (makemap && hasobjects) 2238 { 2239 /* Verify the timestamp in the archive file. If it would not be 2240 accepted by the linker, rewrite it until it would be. If 2241 anything odd happens, break out and just return. (The 2242 Berkeley linker checks the timestamp and refuses to read the 2243 table-of-contents if it is >60 seconds less than the file's 2244 modified-time. That painful hack requires this painful hack. */ 2245 tries = 1; 2246 do 2247 { 2248 if (bfd_update_armap_timestamp (arch)) 2249 break; 2250 _bfd_error_handler 2251 (_("warning: writing archive was slow: rewriting timestamp")); 2252 } 2253 while (++tries < 6); 2254 } 2255 2256 return TRUE; 2257 2258 input_err: 2259 bfd_set_input_error (current, bfd_get_error ()); 2260 return FALSE; 2261 } 2262 2263 /* Note that the namidx for the first symbol is 0. */ 2264 2265 bfd_boolean 2266 _bfd_compute_and_write_armap (bfd *arch, unsigned int elength) 2267 { 2268 char *first_name = NULL; 2269 bfd *current; 2270 file_ptr elt_no = 0; 2271 struct orl *map = NULL; 2272 unsigned int orl_max = 1024; /* Fine initial default. */ 2273 unsigned int orl_count = 0; 2274 int stridx = 0; 2275 asymbol **syms = NULL; 2276 long syms_max = 0; 2277 bfd_boolean ret; 2278 bfd_size_type amt; 2279 static bfd_boolean report_plugin_err = TRUE; 2280 2281 /* Dunno if this is the best place for this info... */ 2282 if (elength != 0) 2283 elength += sizeof (struct ar_hdr); 2284 elength += elength % 2; 2285 2286 amt = orl_max * sizeof (struct orl); 2287 map = (struct orl *) bfd_malloc (amt); 2288 if (map == NULL) 2289 goto error_return; 2290 2291 /* We put the symbol names on the arch objalloc, and then discard 2292 them when done. */ 2293 first_name = (char *) bfd_alloc (arch, 1); 2294 if (first_name == NULL) 2295 goto error_return; 2296 2297 /* Drop all the files called __.SYMDEF, we're going to make our own. */ 2298 while (arch->archive_head 2299 && strcmp (arch->archive_head->filename, "__.SYMDEF") == 0) 2300 arch->archive_head = arch->archive_head->archive_next; 2301 2302 /* Map over each element. */ 2303 for (current = arch->archive_head; 2304 current != NULL; 2305 current = current->archive_next, elt_no++) 2306 { 2307 if (bfd_check_format (current, bfd_object) 2308 && (bfd_get_file_flags (current) & HAS_SYMS) != 0) 2309 { 2310 long storage; 2311 long symcount; 2312 long src_count; 2313 2314 if (current->lto_slim_object && report_plugin_err) 2315 { 2316 report_plugin_err = FALSE; 2317 _bfd_error_handler 2318 (_("%pB: plugin needed to handle lto object"), 2319 current); 2320 } 2321 2322 storage = bfd_get_symtab_upper_bound (current); 2323 if (storage < 0) 2324 goto error_return; 2325 2326 if (storage != 0) 2327 { 2328 if (storage > syms_max) 2329 { 2330 if (syms_max > 0) 2331 free (syms); 2332 syms_max = storage; 2333 syms = (asymbol **) bfd_malloc (syms_max); 2334 if (syms == NULL) 2335 goto error_return; 2336 } 2337 symcount = bfd_canonicalize_symtab (current, syms); 2338 if (symcount < 0) 2339 goto error_return; 2340 2341 /* Now map over all the symbols, picking out the ones we 2342 want. */ 2343 for (src_count = 0; src_count < symcount; src_count++) 2344 { 2345 flagword flags = (syms[src_count])->flags; 2346 asection *sec = syms[src_count]->section; 2347 2348 if (((flags & (BSF_GLOBAL 2349 | BSF_WEAK 2350 | BSF_INDIRECT 2351 | BSF_GNU_UNIQUE)) != 0 2352 || bfd_is_com_section (sec)) 2353 && ! bfd_is_und_section (sec)) 2354 { 2355 bfd_size_type namelen; 2356 struct orl *new_map; 2357 2358 /* This symbol will go into the archive header. */ 2359 if (orl_count == orl_max) 2360 { 2361 orl_max *= 2; 2362 amt = orl_max * sizeof (struct orl); 2363 new_map = (struct orl *) bfd_realloc (map, amt); 2364 if (new_map == NULL) 2365 goto error_return; 2366 2367 map = new_map; 2368 } 2369 2370 if (syms[src_count]->name[0] == '_' 2371 && syms[src_count]->name[1] == '_' 2372 && strcmp (syms[src_count]->name 2373 + (syms[src_count]->name[2] == '_'), 2374 "__gnu_lto_slim") == 0 2375 && report_plugin_err) 2376 { 2377 report_plugin_err = FALSE; 2378 _bfd_error_handler 2379 (_("%pB: plugin needed to handle lto object"), 2380 current); 2381 } 2382 namelen = strlen (syms[src_count]->name); 2383 amt = sizeof (char *); 2384 map[orl_count].name = (char **) bfd_alloc (arch, amt); 2385 if (map[orl_count].name == NULL) 2386 goto error_return; 2387 *(map[orl_count].name) = (char *) bfd_alloc (arch, 2388 namelen + 1); 2389 if (*(map[orl_count].name) == NULL) 2390 goto error_return; 2391 strcpy (*(map[orl_count].name), syms[src_count]->name); 2392 map[orl_count].u.abfd = current; 2393 map[orl_count].namidx = stridx; 2394 2395 stridx += namelen + 1; 2396 ++orl_count; 2397 } 2398 } 2399 } 2400 2401 /* Now ask the BFD to free up any cached information, so we 2402 don't fill all of memory with symbol tables. */ 2403 if (! bfd_free_cached_info (current)) 2404 goto error_return; 2405 } 2406 } 2407 2408 /* OK, now we have collected all the data, let's write them out. */ 2409 ret = BFD_SEND (arch, write_armap, 2410 (arch, elength, map, orl_count, stridx)); 2411 2412 if (syms_max > 0) 2413 free (syms); 2414 if (map != NULL) 2415 free (map); 2416 if (first_name != NULL) 2417 bfd_release (arch, first_name); 2418 2419 return ret; 2420 2421 error_return: 2422 if (syms_max > 0) 2423 free (syms); 2424 if (map != NULL) 2425 free (map); 2426 if (first_name != NULL) 2427 bfd_release (arch, first_name); 2428 2429 return FALSE; 2430 } 2431 2432 bfd_boolean 2433 _bfd_bsd_write_armap (bfd *arch, 2434 unsigned int elength, 2435 struct orl *map, 2436 unsigned int orl_count, 2437 int stridx) 2438 { 2439 int padit = stridx & 1; 2440 unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE; 2441 unsigned int stringsize = stridx + padit; 2442 /* Include 8 bytes to store ranlibsize and stringsize in output. */ 2443 unsigned int mapsize = ranlibsize + stringsize + 8; 2444 file_ptr firstreal, first; 2445 bfd *current; 2446 bfd *last_elt; 2447 bfd_byte temp[4]; 2448 unsigned int count; 2449 struct ar_hdr hdr; 2450 long uid, gid; 2451 2452 first = mapsize + elength + sizeof (struct ar_hdr) + SARMAG; 2453 2454 #ifdef BFD64 2455 firstreal = first; 2456 current = arch->archive_head; 2457 last_elt = current; /* Last element arch seen. */ 2458 for (count = 0; count < orl_count; count++) 2459 { 2460 unsigned int offset; 2461 2462 if (map[count].u.abfd != last_elt) 2463 { 2464 do 2465 { 2466 struct areltdata *ared = arch_eltdata (current); 2467 2468 firstreal += (ared->parsed_size + ared->extra_size 2469 + sizeof (struct ar_hdr)); 2470 firstreal += firstreal % 2; 2471 current = current->archive_next; 2472 } 2473 while (current != map[count].u.abfd); 2474 } 2475 2476 /* The archive file format only has 4 bytes to store the offset 2477 of the member. Generate 64-bit archive if an archive is past 2478 its 4Gb limit. */ 2479 offset = (unsigned int) firstreal; 2480 if (firstreal != (file_ptr) offset) 2481 return _bfd_archive_64_bit_write_armap (arch, elength, map, 2482 orl_count, stridx); 2483 2484 last_elt = current; 2485 } 2486 #endif 2487 2488 /* If deterministic, we use 0 as the timestamp in the map. 2489 Some linkers may require that the archive filesystem modification 2490 time is less than (or near to) the archive map timestamp. Those 2491 linkers should not be used with deterministic mode. (GNU ld and 2492 Gold do not have this restriction.) */ 2493 bfd_ardata (arch)->armap_timestamp = 0; 2494 uid = 0; 2495 gid = 0; 2496 if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0) 2497 { 2498 struct stat statbuf; 2499 2500 if (stat (arch->filename, &statbuf) == 0) 2501 bfd_ardata (arch)->armap_timestamp = (statbuf.st_mtime 2502 + ARMAP_TIME_OFFSET); 2503 uid = getuid(); 2504 gid = getgid(); 2505 } 2506 2507 memset (&hdr, ' ', sizeof (struct ar_hdr)); 2508 memcpy (hdr.ar_name, RANLIBMAG, strlen (RANLIBMAG)); 2509 bfd_ardata (arch)->armap_datepos = (SARMAG 2510 + offsetof (struct ar_hdr, ar_date[0])); 2511 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", 2512 bfd_ardata (arch)->armap_timestamp); 2513 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", uid); 2514 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", gid); 2515 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) 2516 return FALSE; 2517 memcpy (hdr.ar_fmag, ARFMAG, 2); 2518 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 2519 != sizeof (struct ar_hdr)) 2520 return FALSE; 2521 H_PUT_32 (arch, ranlibsize, temp); 2522 if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) 2523 return FALSE; 2524 2525 firstreal = first; 2526 current = arch->archive_head; 2527 last_elt = current; /* Last element arch seen. */ 2528 for (count = 0; count < orl_count; count++) 2529 { 2530 unsigned int offset; 2531 bfd_byte buf[BSD_SYMDEF_SIZE]; 2532 2533 if (map[count].u.abfd != last_elt) 2534 { 2535 do 2536 { 2537 #if 1 2538 bfd_size_type size = arelt_size (current); 2539 if (!strncmp(arch_hdr (current)->ar_name, "#1/", 3)) 2540 size += strlen(normalize(current, current->filename)); 2541 firstreal += size + sizeof (struct ar_hdr); 2542 firstreal += size % 2; 2543 #else 2544 struct areltdata *ared = arch_eltdata (current); 2545 2546 firstreal += (ared->parsed_size + ared->extra_size 2547 + sizeof (struct ar_hdr)); 2548 firstreal += firstreal % 2; 2549 #endif 2550 current = current->archive_next; 2551 } 2552 while (current != map[count].u.abfd); 2553 } 2554 2555 /* The archive file format only has 4 bytes to store the offset 2556 of the member. Check to make sure that firstreal has not grown 2557 too big. */ 2558 offset = (unsigned int) firstreal; 2559 if (firstreal != (file_ptr) offset) 2560 { 2561 bfd_set_error (bfd_error_file_truncated); 2562 return FALSE; 2563 } 2564 2565 last_elt = current; 2566 H_PUT_32 (arch, map[count].namidx, buf); 2567 H_PUT_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE); 2568 if (bfd_bwrite (buf, BSD_SYMDEF_SIZE, arch) 2569 != BSD_SYMDEF_SIZE) 2570 return FALSE; 2571 } 2572 2573 /* Now write the strings themselves. */ 2574 H_PUT_32 (arch, stringsize, temp); 2575 if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) 2576 return FALSE; 2577 for (count = 0; count < orl_count; count++) 2578 { 2579 size_t len = strlen (*map[count].name) + 1; 2580 2581 if (bfd_bwrite (*map[count].name, len, arch) != len) 2582 return FALSE; 2583 } 2584 2585 /* The spec sez this should be a newline. But in order to be 2586 bug-compatible for sun's ar we use a null. */ 2587 if (padit) 2588 { 2589 if (bfd_bwrite ("", 1, arch) != 1) 2590 return FALSE; 2591 } 2592 2593 return TRUE; 2594 } 2595 2596 /* At the end of archive file handling, update the timestamp in the 2597 file, so the linker will accept it. 2598 2599 Return TRUE if the timestamp was OK, or an unusual problem happened. 2600 Return FALSE if we updated the timestamp. */ 2601 2602 bfd_boolean 2603 _bfd_archive_bsd_update_armap_timestamp (bfd *arch) 2604 { 2605 struct stat archstat; 2606 struct ar_hdr hdr; 2607 2608 /* If creating deterministic archives, just leave the timestamp as-is. */ 2609 if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) != 0) 2610 return TRUE; 2611 2612 /* Flush writes, get last-write timestamp from file, and compare it 2613 to the timestamp IN the file. */ 2614 bfd_flush (arch); 2615 if (bfd_stat (arch, &archstat) == -1) 2616 { 2617 bfd_perror (_("Reading archive file mod timestamp")); 2618 2619 /* Can't read mod time for some reason. */ 2620 return TRUE; 2621 } 2622 if (((long) archstat.st_mtime) <= bfd_ardata (arch)->armap_timestamp) 2623 /* OK by the linker's rules. */ 2624 return TRUE; 2625 2626 /* Update the timestamp. */ 2627 bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET; 2628 2629 /* Prepare an ASCII version suitable for writing. */ 2630 memset (hdr.ar_date, ' ', sizeof (hdr.ar_date)); 2631 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", 2632 bfd_ardata (arch)->armap_timestamp); 2633 2634 /* Write it into the file. */ 2635 bfd_ardata (arch)->armap_datepos = (SARMAG 2636 + offsetof (struct ar_hdr, ar_date[0])); 2637 if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0 2638 || (bfd_bwrite (hdr.ar_date, sizeof (hdr.ar_date), arch) 2639 != sizeof (hdr.ar_date))) 2640 { 2641 bfd_perror (_("Writing updated armap timestamp")); 2642 2643 /* Some error while writing. */ 2644 return TRUE; 2645 } 2646 2647 /* We updated the timestamp successfully. */ 2648 return FALSE; 2649 } 2650 2651 /* A coff armap looks like : 2652 lARMAG 2653 struct ar_hdr with name = '/' 2654 number of symbols 2655 offset of file for symbol 0 2656 offset of file for symbol 1 2657 2658 offset of file for symbol n-1 2659 symbol name 0 2660 symbol name 1 2661 2662 symbol name n-1 */ 2663 2664 bfd_boolean 2665 _bfd_coff_write_armap (bfd *arch, 2666 unsigned int elength, 2667 struct orl *map, 2668 unsigned int symbol_count, 2669 int stridx) 2670 { 2671 /* The size of the ranlib is the number of exported symbols in the 2672 archive * the number of bytes in an int, + an int for the count. */ 2673 unsigned int ranlibsize = (symbol_count * 4) + 4; 2674 unsigned int stringsize = stridx; 2675 unsigned int mapsize = stringsize + ranlibsize; 2676 file_ptr archive_member_file_ptr; 2677 file_ptr first_archive_member_file_ptr; 2678 bfd *current = arch->archive_head; 2679 unsigned int count; 2680 struct ar_hdr hdr; 2681 int padit = mapsize & 1; 2682 2683 if (padit) 2684 mapsize++; 2685 2686 /* Work out where the first object file will go in the archive. */ 2687 first_archive_member_file_ptr = (mapsize 2688 + elength 2689 + sizeof (struct ar_hdr) 2690 + SARMAG); 2691 2692 #ifdef BFD64 2693 current = arch->archive_head; 2694 count = 0; 2695 archive_member_file_ptr = first_archive_member_file_ptr; 2696 while (current != NULL && count < symbol_count) 2697 { 2698 /* For each symbol which is used defined in this object, write 2699 out the object file's address in the archive. */ 2700 2701 while (count < symbol_count && map[count].u.abfd == current) 2702 { 2703 unsigned int offset = (unsigned int) archive_member_file_ptr; 2704 2705 /* Generate 64-bit archive if an archive is past its 4Gb 2706 limit. */ 2707 if (archive_member_file_ptr != (file_ptr) offset) 2708 return _bfd_archive_64_bit_write_armap (arch, elength, map, 2709 symbol_count, stridx); 2710 count++; 2711 } 2712 archive_member_file_ptr += sizeof (struct ar_hdr); 2713 if (! bfd_is_thin_archive (arch)) 2714 { 2715 /* Add size of this archive entry. */ 2716 archive_member_file_ptr += arelt_size (current); 2717 /* Remember about the even alignment. */ 2718 archive_member_file_ptr += archive_member_file_ptr % 2; 2719 } 2720 current = current->archive_next; 2721 } 2722 #endif 2723 2724 memset (&hdr, ' ', sizeof (struct ar_hdr)); 2725 hdr.ar_name[0] = '/'; 2726 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) 2727 return FALSE; 2728 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", 2729 ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0 2730 ? time (NULL) : 0)); 2731 /* This, at least, is what Intel coff sets the values to. */ 2732 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0); 2733 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0); 2734 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0); 2735 memcpy (hdr.ar_fmag, ARFMAG, 2); 2736 2737 /* Write the ar header for this item and the number of symbols. */ 2738 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 2739 != sizeof (struct ar_hdr)) 2740 return FALSE; 2741 2742 if (!bfd_write_bigendian_4byte_int (arch, symbol_count)) 2743 return FALSE; 2744 2745 /* Two passes, first write the file offsets for each symbol - 2746 remembering that each offset is on a two byte boundary. */ 2747 2748 /* Write out the file offset for the file associated with each 2749 symbol, and remember to keep the offsets padded out. */ 2750 2751 current = arch->archive_head; 2752 count = 0; 2753 archive_member_file_ptr = first_archive_member_file_ptr; 2754 while (current != NULL && count < symbol_count) 2755 { 2756 /* For each symbol which is used defined in this object, write 2757 out the object file's address in the archive. */ 2758 2759 while (count < symbol_count && map[count].u.abfd == current) 2760 { 2761 unsigned int offset = (unsigned int) archive_member_file_ptr; 2762 2763 /* Catch an attempt to grow an archive past its 4Gb limit. */ 2764 if (archive_member_file_ptr != (file_ptr) offset) 2765 { 2766 bfd_set_error (bfd_error_file_truncated); 2767 return FALSE; 2768 } 2769 if (!bfd_write_bigendian_4byte_int (arch, offset)) 2770 return FALSE; 2771 count++; 2772 } 2773 archive_member_file_ptr += sizeof (struct ar_hdr); 2774 if (! bfd_is_thin_archive (arch)) 2775 { 2776 /* Add size of this archive entry. */ 2777 archive_member_file_ptr += arelt_size (current); 2778 /* Remember about the even alignment. */ 2779 archive_member_file_ptr += archive_member_file_ptr % 2; 2780 } 2781 current = current->archive_next; 2782 } 2783 2784 /* Now write the strings themselves. */ 2785 for (count = 0; count < symbol_count; count++) 2786 { 2787 size_t len = strlen (*map[count].name) + 1; 2788 2789 if (bfd_bwrite (*map[count].name, len, arch) != len) 2790 return FALSE; 2791 } 2792 2793 /* The spec sez this should be a newline. But in order to be 2794 bug-compatible for arc960 we use a null. */ 2795 if (padit) 2796 { 2797 if (bfd_bwrite ("", 1, arch) != 1) 2798 return FALSE; 2799 } 2800 2801 return TRUE; 2802 } 2803 2804 bfd_boolean 2805 _bfd_noarchive_write_armap 2806 (bfd *arch ATTRIBUTE_UNUSED, 2807 unsigned int elength ATTRIBUTE_UNUSED, 2808 struct orl *map ATTRIBUTE_UNUSED, 2809 unsigned int orl_count ATTRIBUTE_UNUSED, 2810 int stridx ATTRIBUTE_UNUSED) 2811 { 2812 return TRUE; 2813 } 2814 2815 static int 2816 archive_close_worker (void **slot, void *inf ATTRIBUTE_UNUSED) 2817 { 2818 struct ar_cache *ent = (struct ar_cache *) *slot; 2819 2820 bfd_close_all_done (ent->arbfd); 2821 return 1; 2822 } 2823 2824 void 2825 _bfd_unlink_from_archive_parent (bfd *abfd) 2826 { 2827 if (arch_eltdata (abfd) != NULL) 2828 { 2829 struct areltdata *ared = arch_eltdata (abfd); 2830 htab_t htab = (htab_t) ared->parent_cache; 2831 2832 if (htab) 2833 { 2834 struct ar_cache ent; 2835 void **slot; 2836 2837 ent.ptr = ared->key; 2838 slot = htab_find_slot (htab, &ent, NO_INSERT); 2839 if (slot != NULL) 2840 { 2841 BFD_ASSERT (((struct ar_cache *) *slot)->arbfd == abfd); 2842 htab_clear_slot (htab, slot); 2843 } 2844 } 2845 } 2846 } 2847 2848 bfd_boolean 2849 _bfd_archive_close_and_cleanup (bfd *abfd) 2850 { 2851 if (bfd_read_p (abfd) && abfd->format == bfd_archive) 2852 { 2853 bfd *nbfd; 2854 bfd *next; 2855 htab_t htab; 2856 2857 /* Close nested archives (if this bfd is a thin archive). */ 2858 for (nbfd = abfd->nested_archives; nbfd; nbfd = next) 2859 { 2860 next = nbfd->archive_next; 2861 bfd_close (nbfd); 2862 } 2863 2864 htab = bfd_ardata (abfd)->cache; 2865 if (htab) 2866 { 2867 htab_traverse_noresize (htab, archive_close_worker, NULL); 2868 htab_delete (htab); 2869 bfd_ardata (abfd)->cache = NULL; 2870 } 2871 } 2872 2873 _bfd_unlink_from_archive_parent (abfd); 2874 2875 if (abfd->is_linker_output) 2876 (*abfd->link.hash->hash_table_free) (abfd); 2877 2878 return TRUE; 2879 } 2880