2010-01-13 Tristan Gingold <gingold@adacore.com>
[binutils.git] / bfd / archive.c
blob2e1c8f0b1d81401a5b6d51495707037c926d2524
1 /* BFD back-end for archive files (libraries).
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
5 Written by Cygnus Support. Mostly Gumby Henkel-Wallace's fault.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 @setfilename archive-info
25 SECTION
26 Archives
28 DESCRIPTION
29 An archive (or library) is just another BFD. It has a symbol
30 table, although there's not much a user program will do with it.
32 The big difference between an archive BFD and an ordinary BFD
33 is that the archive doesn't have sections. Instead it has a
34 chain of BFDs that are considered its contents. These BFDs can
35 be manipulated like any other. The BFDs contained in an
36 archive opened for reading will all be opened for reading. You
37 may put either input or output BFDs into an archive opened for
38 output; they will be handled correctly when the archive is closed.
40 Use <<bfd_openr_next_archived_file>> to step through
41 the contents of an archive opened for input. You don't
42 have to read the entire archive if you don't want
43 to! Read it until you find what you want.
45 Archive contents of output BFDs are chained through the
46 <<next>> pointer in a BFD. The first one is findable through
47 the <<archive_head>> slot of the archive. Set it with
48 <<bfd_set_archive_head>> (q.v.). A given BFD may be in only one
49 open output archive at a time.
51 As expected, the BFD archive code is more general than the
52 archive code of any given environment. BFD archives may
53 contain files of different formats (e.g., a.out and coff) and
54 even different architectures. You may even place archives
55 recursively into archives!
57 This can cause unexpected confusion, since some archive
58 formats are more expressive than others. For instance, Intel
59 COFF archives can preserve long filenames; SunOS a.out archives
60 cannot. If you move a file from the first to the second
61 format and back again, the filename may be truncated.
62 Likewise, different a.out environments have different
63 conventions as to how they truncate filenames, whether they
64 preserve directory names in filenames, etc. When
65 interoperating with native tools, be sure your files are
66 homogeneous.
68 Beware: most of these formats do not react well to the
69 presence of spaces in filenames. We do the best we can, but
70 can't always handle this case due to restrictions in the format of
71 archives. Many Unix utilities are braindead in regards to
72 spaces and such in filenames anyway, so this shouldn't be much
73 of a restriction.
75 Archives are supported in BFD in <<archive.c>>.
77 SUBSECTION
78 Archive functions
81 /* Assumes:
82 o - all archive elements start on an even boundary, newline padded;
83 o - all arch headers are char *;
84 o - all arch headers are the same size (across architectures).
87 /* Some formats provide a way to cram a long filename into the short
88 (16 chars) space provided by a BSD archive. The trick is: make a
89 special "file" in the front of the archive, sort of like the SYMDEF
90 entry. If the filename is too long to fit, put it in the extended
91 name table, and use its index as the filename. To prevent
92 confusion prepend the index with a space. This means you can't
93 have filenames that start with a space, but then again, many Unix
94 utilities can't handle that anyway.
96 This scheme unfortunately requires that you stand on your head in
97 order to write an archive since you need to put a magic file at the
98 front, and need to touch every entry to do so. C'est la vie.
100 We support two variants of this idea:
101 The SVR4 format (extended name table is named "//"),
102 and an extended pseudo-BSD variant (extended name table is named
103 "ARFILENAMES/"). The origin of the latter format is uncertain.
105 BSD 4.4 uses a third scheme: It writes a long filename
106 directly after the header. This allows 'ar q' to work.
107 We currently can read BSD 4.4 archives, but not write them.
110 /* Summary of archive member names:
112 Symbol table (must be first):
113 "__.SYMDEF " - Symbol table, Berkeley style, produced by ranlib.
114 "/ " - Symbol table, system 5 style.
116 Long name table (must be before regular file members):
117 "// " - Long name table, System 5 R4 style.
118 "ARFILENAMES/ " - Long name table, non-standard extended BSD (not BSD 4.4).
120 Regular file members with short names:
121 "filename.o/ " - Regular file, System 5 style (embedded spaces ok).
122 "filename.o " - Regular file, Berkeley style (no embedded spaces).
124 Regular files with long names (or embedded spaces, for BSD variants):
125 "/18 " - SVR4 style, name at offset 18 in name table.
126 "#1/23 " - Long name (or embedded spaces) 23 characters long,
127 BSD 4.4 style, full name follows header.
128 Implemented for reading, not writing.
129 " 18 " - Long name 18 characters long, extended pseudo-BSD.
132 #include "sysdep.h"
133 #include "bfd.h"
134 #include "libiberty.h"
135 #include "libbfd.h"
136 #include "aout/ar.h"
137 #include "aout/ranlib.h"
138 #include "safe-ctype.h"
139 #include "hashtab.h"
140 #include "filenames.h"
142 #ifndef errno
143 extern int errno;
144 #endif
146 /* We keep a cache of archive filepointers to archive elements to
147 speed up searching the archive by filepos. We only add an entry to
148 the cache when we actually read one. We also don't sort the cache;
149 it's generally short enough to search linearly.
150 Note that the pointers here point to the front of the ar_hdr, not
151 to the front of the contents! */
152 struct ar_cache {
153 file_ptr ptr;
154 bfd *arbfd;
157 #define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char)
158 #define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen)
160 #define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data))
161 #define arch_hdr(bfd) ((struct ar_hdr *) arch_eltdata (bfd)->arch_header)
163 void
164 _bfd_ar_spacepad (char *p, size_t n, const char *fmt, long val)
166 static char buf[20];
167 size_t len;
168 snprintf (buf, sizeof (buf), fmt, val);
169 len = strlen (buf);
170 if (len < n)
172 memcpy (p, buf, len);
173 memset (p + len, ' ', n - len);
175 else
176 memcpy (p, buf, n);
179 bfd_boolean
180 _bfd_generic_mkarchive (bfd *abfd)
182 bfd_size_type amt = sizeof (struct artdata);
184 abfd->tdata.aout_ar_data = (struct artdata *) bfd_zalloc (abfd, amt);
185 if (bfd_ardata (abfd) == NULL)
186 return FALSE;
188 /* Already cleared by bfd_zalloc above.
189 bfd_ardata (abfd)->cache = NULL;
190 bfd_ardata (abfd)->archive_head = NULL;
191 bfd_ardata (abfd)->symdefs = NULL;
192 bfd_ardata (abfd)->extended_names = NULL;
193 bfd_ardata (abfd)->extended_names_size = 0;
194 bfd_ardata (abfd)->tdata = NULL; */
196 return TRUE;
200 FUNCTION
201 bfd_get_next_mapent
203 SYNOPSIS
204 symindex bfd_get_next_mapent
205 (bfd *abfd, symindex previous, carsym **sym);
207 DESCRIPTION
208 Step through archive @var{abfd}'s symbol table (if it
209 has one). Successively update @var{sym} with the next symbol's
210 information, returning that symbol's (internal) index into the
211 symbol table.
213 Supply <<BFD_NO_MORE_SYMBOLS>> as the @var{previous} entry to get
214 the first one; returns <<BFD_NO_MORE_SYMBOLS>> when you've already
215 got the last one.
217 A <<carsym>> is a canonical archive symbol. The only
218 user-visible element is its name, a null-terminated string.
221 symindex
222 bfd_get_next_mapent (bfd *abfd, symindex prev, carsym **entry)
224 if (!bfd_has_map (abfd))
226 bfd_set_error (bfd_error_invalid_operation);
227 return BFD_NO_MORE_SYMBOLS;
230 if (prev == BFD_NO_MORE_SYMBOLS)
231 prev = 0;
232 else
233 ++prev;
234 if (prev >= bfd_ardata (abfd)->symdef_count)
235 return BFD_NO_MORE_SYMBOLS;
237 *entry = (bfd_ardata (abfd)->symdefs + prev);
238 return prev;
241 /* To be called by backends only. */
243 bfd *
244 _bfd_create_empty_archive_element_shell (bfd *obfd)
246 return _bfd_new_bfd_contained_in (obfd);
250 FUNCTION
251 bfd_set_archive_head
253 SYNOPSIS
254 bfd_boolean bfd_set_archive_head (bfd *output, bfd *new_head);
256 DESCRIPTION
257 Set the head of the chain of
258 BFDs contained in the archive @var{output} to @var{new_head}.
261 bfd_boolean
262 bfd_set_archive_head (bfd *output_archive, bfd *new_head)
264 output_archive->archive_head = new_head;
265 return TRUE;
268 bfd *
269 _bfd_look_for_bfd_in_cache (bfd *arch_bfd, file_ptr filepos)
271 htab_t hash_table = bfd_ardata (arch_bfd)->cache;
272 struct ar_cache m;
273 m.ptr = filepos;
275 if (hash_table)
277 struct ar_cache *entry = (struct ar_cache *) htab_find (hash_table, &m);
278 if (!entry)
279 return NULL;
280 else
281 return entry->arbfd;
283 else
284 return NULL;
287 static hashval_t
288 hash_file_ptr (const PTR p)
290 return (hashval_t) (((struct ar_cache *) p)->ptr);
293 /* Returns non-zero if P1 and P2 are equal. */
295 static int
296 eq_file_ptr (const PTR p1, const PTR p2)
298 struct ar_cache *arc1 = (struct ar_cache *) p1;
299 struct ar_cache *arc2 = (struct ar_cache *) p2;
300 return arc1->ptr == arc2->ptr;
303 /* Kind of stupid to call cons for each one, but we don't do too many. */
305 bfd_boolean
306 _bfd_add_bfd_to_archive_cache (bfd *arch_bfd, file_ptr filepos, bfd *new_elt)
308 struct ar_cache *cache;
309 htab_t hash_table = bfd_ardata (arch_bfd)->cache;
311 /* If the hash table hasn't been created, create it. */
312 if (hash_table == NULL)
314 hash_table = htab_create_alloc (16, hash_file_ptr, eq_file_ptr,
315 NULL, calloc, free);
316 if (hash_table == NULL)
317 return FALSE;
318 bfd_ardata (arch_bfd)->cache = hash_table;
321 /* Insert new_elt into the hash table by filepos. */
322 cache = (struct ar_cache *) bfd_zalloc (arch_bfd, sizeof (struct ar_cache));
323 cache->ptr = filepos;
324 cache->arbfd = new_elt;
325 *htab_find_slot (hash_table, (const void *) cache, INSERT) = cache;
327 return TRUE;
330 static bfd *
331 _bfd_find_nested_archive (bfd *arch_bfd, const char *filename)
333 bfd *abfd;
335 for (abfd = arch_bfd->nested_archives;
336 abfd != NULL;
337 abfd = abfd->archive_next)
339 if (strcmp (filename, abfd->filename) == 0)
340 return abfd;
342 abfd = bfd_openr (filename, NULL);
343 if (abfd)
345 abfd->archive_next = arch_bfd->nested_archives;
346 arch_bfd->nested_archives = abfd;
348 return abfd;
351 /* The name begins with space. Hence the rest of the name is an index into
352 the string table. */
354 static char *
355 get_extended_arelt_filename (bfd *arch, const char *name, file_ptr *originp)
357 unsigned long table_index = 0;
358 const char *endp;
360 /* Should extract string so that I can guarantee not to overflow into
361 the next region, but I'm too lazy. */
362 errno = 0;
363 /* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */
364 table_index = strtol (name + 1, (char **) &endp, 10);
365 if (errno != 0 || table_index >= bfd_ardata (arch)->extended_names_size)
367 bfd_set_error (bfd_error_malformed_archive);
368 return NULL;
370 /* In a thin archive, a member of an archive-within-an-archive
371 will have the offset in the inner archive encoded here. */
372 if (bfd_is_thin_archive (arch) && endp != NULL && *endp == ':')
374 file_ptr origin = strtol (endp + 1, NULL, 10);
376 if (errno != 0)
378 bfd_set_error (bfd_error_malformed_archive);
379 return NULL;
381 *originp = origin;
383 else
384 *originp = 0;
386 return bfd_ardata (arch)->extended_names + table_index;
389 /* This functions reads an arch header and returns an areltdata pointer, or
390 NULL on error.
392 Presumes the file pointer is already in the right place (ie pointing
393 to the ar_hdr in the file). Moves the file pointer; on success it
394 should be pointing to the front of the file contents; on failure it
395 could have been moved arbitrarily. */
397 void *
398 _bfd_generic_read_ar_hdr (bfd *abfd)
400 return _bfd_generic_read_ar_hdr_mag (abfd, NULL);
403 /* Alpha ECOFF uses an optional different ARFMAG value, so we have a
404 variant of _bfd_generic_read_ar_hdr which accepts a magic string. */
406 void *
407 _bfd_generic_read_ar_hdr_mag (bfd *abfd, const char *mag)
409 struct ar_hdr hdr;
410 char *hdrp = (char *) &hdr;
411 size_t parsed_size;
412 struct areltdata *ared;
413 char *filename = NULL;
414 bfd_size_type namelen = 0;
415 bfd_size_type allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr);
416 char *allocptr = 0;
417 file_ptr origin = 0;
419 if (bfd_bread (hdrp, sizeof (struct ar_hdr), abfd) != sizeof (struct ar_hdr))
421 if (bfd_get_error () != bfd_error_system_call)
422 bfd_set_error (bfd_error_no_more_archived_files);
423 return NULL;
425 if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0
426 && (mag == NULL
427 || strncmp (hdr.ar_fmag, mag, 2) != 0))
429 bfd_set_error (bfd_error_malformed_archive);
430 return NULL;
433 errno = 0;
434 parsed_size = strtol (hdr.ar_size, NULL, 10);
435 if (errno != 0)
437 bfd_set_error (bfd_error_malformed_archive);
438 return NULL;
441 /* Extract the filename from the archive - there are two ways to
442 specify an extended name table, either the first char of the
443 name is a space, or it's a slash. */
444 if ((hdr.ar_name[0] == '/'
445 || (hdr.ar_name[0] == ' '
446 && memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL))
447 && bfd_ardata (abfd)->extended_names != NULL)
449 filename = get_extended_arelt_filename (abfd, hdr.ar_name, &origin);
450 if (filename == NULL)
451 return NULL;
453 /* BSD4.4-style long filename.
454 Only implemented for reading, so far! */
455 else if (hdr.ar_name[0] == '#'
456 && hdr.ar_name[1] == '1'
457 && hdr.ar_name[2] == '/'
458 && ISDIGIT (hdr.ar_name[3]))
460 /* BSD-4.4 extended name */
461 namelen = atoi (&hdr.ar_name[3]);
462 allocsize += namelen + 1;
463 parsed_size -= namelen;
465 allocptr = (char *) bfd_zalloc (abfd, allocsize);
466 if (allocptr == NULL)
467 return NULL;
468 filename = (allocptr
469 + sizeof (struct areltdata)
470 + sizeof (struct ar_hdr));
471 if (bfd_bread (filename, namelen, abfd) != namelen)
473 if (bfd_get_error () != bfd_error_system_call)
474 bfd_set_error (bfd_error_no_more_archived_files);
475 return NULL;
477 filename[namelen] = '\0';
479 else
481 /* We judge the end of the name by looking for '/' or ' '.
482 Note: The SYSV format (terminated by '/') allows embedded
483 spaces, so only look for ' ' if we don't find '/'. */
485 char *e;
486 e = (char *) memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd));
487 if (e == NULL)
489 e = (char *) memchr (hdr.ar_name, '/', ar_maxnamelen (abfd));
490 if (e == NULL)
491 e = (char *) memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd));
494 if (e != NULL)
495 namelen = e - hdr.ar_name;
496 else
498 /* If we didn't find a termination character, then the name
499 must be the entire field. */
500 namelen = ar_maxnamelen (abfd);
503 allocsize += namelen + 1;
506 if (!allocptr)
508 allocptr = (char *) bfd_zalloc (abfd, allocsize);
509 if (allocptr == NULL)
510 return NULL;
513 ared = (struct areltdata *) allocptr;
515 ared->arch_header = allocptr + sizeof (struct areltdata);
516 memcpy (ared->arch_header, &hdr, sizeof (struct ar_hdr));
517 ared->parsed_size = parsed_size;
518 ared->origin = origin;
520 if (filename != NULL)
521 ared->filename = filename;
522 else
524 ared->filename = allocptr + (sizeof (struct areltdata) +
525 sizeof (struct ar_hdr));
526 if (namelen)
527 memcpy (ared->filename, hdr.ar_name, namelen);
528 ared->filename[namelen] = '\0';
531 return ared;
534 /* Append the relative pathname for a member of the thin archive
535 to the pathname of the directory containing the archive. */
537 static char *
538 append_relative_path (bfd *arch, char *elt_name)
540 const char *arch_name = arch->filename;
541 const char *base_name = lbasename (arch_name);
542 size_t prefix_len;
543 char *filename;
545 if (base_name == arch_name)
546 return elt_name;
548 prefix_len = base_name - arch_name;
549 filename = (char *) bfd_alloc (arch, prefix_len + strlen (elt_name) + 1);
550 if (filename == NULL)
551 return NULL;
553 strncpy (filename, arch_name, prefix_len);
554 strcpy (filename + prefix_len, elt_name);
555 return filename;
558 /* This is an internal function; it's mainly used when indexing
559 through the archive symbol table, but also used to get the next
560 element, since it handles the bookkeeping so nicely for us. */
562 bfd *
563 _bfd_get_elt_at_filepos (bfd *archive, file_ptr filepos)
565 struct areltdata *new_areldata;
566 bfd *n_nfd;
567 char *filename;
569 if (archive->my_archive)
571 filepos += archive->origin;
572 archive = archive->my_archive;
575 n_nfd = _bfd_look_for_bfd_in_cache (archive, filepos);
576 if (n_nfd)
577 return n_nfd;
579 if (0 > bfd_seek (archive, filepos, SEEK_SET))
580 return NULL;
582 if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL)
583 return NULL;
585 filename = new_areldata->filename;
587 if (bfd_is_thin_archive (archive))
589 /* This is a proxy entry for an external file. */
590 if (! IS_ABSOLUTE_PATH (filename))
592 filename = append_relative_path (archive, filename);
593 if (filename == NULL)
594 return NULL;
597 if (new_areldata->origin > 0)
599 /* This proxy entry refers to an element of a nested archive.
600 Locate the member of that archive and return a bfd for it. */
601 bfd *ext_arch = _bfd_find_nested_archive (archive, filename);
603 if (ext_arch == NULL
604 || ! bfd_check_format (ext_arch, bfd_archive))
606 bfd_release (archive, new_areldata);
607 return NULL;
609 n_nfd = _bfd_get_elt_at_filepos (ext_arch, new_areldata->origin);
610 if (n_nfd == NULL)
612 bfd_release (archive, new_areldata);
613 return NULL;
615 n_nfd->proxy_origin = bfd_tell (archive);
616 return n_nfd;
618 /* It's not an element of a nested archive;
619 open the external file as a bfd. */
620 n_nfd = bfd_openr (filename, NULL);
622 else
624 n_nfd = _bfd_create_empty_archive_element_shell (archive);
627 if (n_nfd == NULL)
629 bfd_release (archive, new_areldata);
630 return NULL;
633 n_nfd->proxy_origin = bfd_tell (archive);
635 if (bfd_is_thin_archive (archive))
637 n_nfd->origin = 0;
639 else
641 n_nfd->origin = n_nfd->proxy_origin;
642 n_nfd->filename = filename;
645 n_nfd->arelt_data = new_areldata;
647 if (_bfd_add_bfd_to_archive_cache (archive, filepos, n_nfd))
648 return n_nfd;
650 /* Huh? */
651 /* FIXME: n_nfd isn't allocated in the archive's memory pool.
652 If we reach this point, I think bfd_release will abort. */
653 bfd_release (archive, n_nfd);
654 bfd_release (archive, new_areldata);
655 return NULL;
658 /* Return the BFD which is referenced by the symbol in ABFD indexed by
659 SYM_INDEX. SYM_INDEX should have been returned by bfd_get_next_mapent. */
661 bfd *
662 _bfd_generic_get_elt_at_index (bfd *abfd, symindex sym_index)
664 carsym *entry;
666 entry = bfd_ardata (abfd)->symdefs + sym_index;
667 return _bfd_get_elt_at_filepos (abfd, entry->file_offset);
671 FUNCTION
672 bfd_openr_next_archived_file
674 SYNOPSIS
675 bfd *bfd_openr_next_archived_file (bfd *archive, bfd *previous);
677 DESCRIPTION
678 Provided a BFD, @var{archive}, containing an archive and NULL, open
679 an input BFD on the first contained element and returns that.
680 Subsequent calls should pass
681 the archive and the previous return value to return a created
682 BFD to the next contained element. NULL is returned when there
683 are no more.
686 bfd *
687 bfd_openr_next_archived_file (bfd *archive, bfd *last_file)
689 if ((bfd_get_format (archive) != bfd_archive)
690 || (archive->direction == write_direction))
692 bfd_set_error (bfd_error_invalid_operation);
693 return NULL;
696 return BFD_SEND (archive,
697 openr_next_archived_file, (archive, last_file));
700 bfd *
701 bfd_generic_openr_next_archived_file (bfd *archive, bfd *last_file)
703 file_ptr filestart;
705 if (!last_file)
706 filestart = bfd_ardata (archive)->first_file_filepos;
707 else
709 unsigned int size = arelt_size (last_file);
710 filestart = last_file->proxy_origin;
711 if (! bfd_is_thin_archive (archive))
712 filestart += size;
713 if (archive->my_archive)
714 filestart -= archive->origin;
715 /* Pad to an even boundary...
716 Note that last_file->origin can be odd in the case of
717 BSD-4.4-style element with a long odd size. */
718 filestart += filestart % 2;
721 return _bfd_get_elt_at_filepos (archive, filestart);
724 const bfd_target *
725 bfd_generic_archive_p (bfd *abfd)
727 struct artdata *tdata_hold;
728 char armag[SARMAG + 1];
729 bfd_size_type amt;
731 if (bfd_bread (armag, SARMAG, abfd) != SARMAG)
733 if (bfd_get_error () != bfd_error_system_call)
734 bfd_set_error (bfd_error_wrong_format);
735 return NULL;
738 bfd_is_thin_archive (abfd) = (strncmp (armag, ARMAGT, SARMAG) == 0);
740 if (strncmp (armag, ARMAG, SARMAG) != 0
741 && strncmp (armag, ARMAGB, SARMAG) != 0
742 && ! bfd_is_thin_archive (abfd))
743 return 0;
745 tdata_hold = bfd_ardata (abfd);
747 amt = sizeof (struct artdata);
748 bfd_ardata (abfd) = (struct artdata *) bfd_zalloc (abfd, amt);
749 if (bfd_ardata (abfd) == NULL)
751 bfd_ardata (abfd) = tdata_hold;
752 return NULL;
755 bfd_ardata (abfd)->first_file_filepos = SARMAG;
756 /* Cleared by bfd_zalloc above.
757 bfd_ardata (abfd)->cache = NULL;
758 bfd_ardata (abfd)->archive_head = NULL;
759 bfd_ardata (abfd)->symdefs = NULL;
760 bfd_ardata (abfd)->extended_names = NULL;
761 bfd_ardata (abfd)->extended_names_size = 0;
762 bfd_ardata (abfd)->tdata = NULL; */
764 if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd))
765 || !BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd)))
767 if (bfd_get_error () != bfd_error_system_call)
768 bfd_set_error (bfd_error_wrong_format);
769 bfd_release (abfd, bfd_ardata (abfd));
770 bfd_ardata (abfd) = tdata_hold;
771 return NULL;
774 if (bfd_has_map (abfd))
776 bfd *first;
778 /* This archive has a map, so we may presume that the contents
779 are object files. Make sure that if the first file in the
780 archive can be recognized as an object file, it is for this
781 target. If not, assume that this is the wrong format. If
782 the first file is not an object file, somebody is doing
783 something weird, and we permit it so that ar -t will work.
785 This is done because any normal format will recognize any
786 normal archive, regardless of the format of the object files.
787 We do accept an empty archive. */
789 first = bfd_openr_next_archived_file (abfd, NULL);
790 if (first != NULL)
792 first->target_defaulted = FALSE;
793 if (bfd_check_format (first, bfd_object)
794 && first->xvec != abfd->xvec)
796 bfd_set_error (bfd_error_wrong_object_format);
797 bfd_ardata (abfd) = tdata_hold;
798 return NULL;
800 /* And we ought to close `first' here too. */
804 return abfd->xvec;
807 /* Some constants for a 32 bit BSD archive structure. We do not
808 support 64 bit archives presently; so far as I know, none actually
809 exist. Supporting them would require changing these constants, and
810 changing some H_GET_32 to H_GET_64. */
812 /* The size of an external symdef structure. */
813 #define BSD_SYMDEF_SIZE 8
815 /* The offset from the start of a symdef structure to the file offset. */
816 #define BSD_SYMDEF_OFFSET_SIZE 4
818 /* The size of the symdef count. */
819 #define BSD_SYMDEF_COUNT_SIZE 4
821 /* The size of the string count. */
822 #define BSD_STRING_COUNT_SIZE 4
824 /* Read a BSD-style archive symbol table. Returns FALSE on error,
825 TRUE otherwise. */
827 static bfd_boolean
828 do_slurp_bsd_armap (bfd *abfd)
830 struct areltdata *mapdata;
831 unsigned int counter;
832 bfd_byte *raw_armap, *rbase;
833 struct artdata *ardata = bfd_ardata (abfd);
834 char *stringbase;
835 bfd_size_type parsed_size, amt;
836 carsym *set;
838 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
839 if (mapdata == NULL)
840 return FALSE;
841 parsed_size = mapdata->parsed_size;
842 bfd_release (abfd, mapdata); /* Don't need it any more. */
844 raw_armap = (bfd_byte *) bfd_zalloc (abfd, parsed_size);
845 if (raw_armap == NULL)
846 return FALSE;
848 if (bfd_bread (raw_armap, parsed_size, abfd) != parsed_size)
850 if (bfd_get_error () != bfd_error_system_call)
851 bfd_set_error (bfd_error_malformed_archive);
852 byebye:
853 bfd_release (abfd, raw_armap);
854 return FALSE;
857 ardata->symdef_count = H_GET_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE;
859 if (ardata->symdef_count * BSD_SYMDEF_SIZE >
860 parsed_size - BSD_SYMDEF_COUNT_SIZE)
862 /* Probably we're using the wrong byte ordering. */
863 bfd_set_error (bfd_error_wrong_format);
864 goto byebye;
867 ardata->cache = 0;
868 rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE;
869 stringbase = ((char *) rbase
870 + ardata->symdef_count * BSD_SYMDEF_SIZE
871 + BSD_STRING_COUNT_SIZE);
872 amt = ardata->symdef_count * sizeof (carsym);
873 ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt);
874 if (!ardata->symdefs)
875 return FALSE;
877 for (counter = 0, set = ardata->symdefs;
878 counter < ardata->symdef_count;
879 counter++, set++, rbase += BSD_SYMDEF_SIZE)
881 set->name = H_GET_32 (abfd, rbase) + stringbase;
882 set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE);
885 ardata->first_file_filepos = bfd_tell (abfd);
886 /* Pad to an even boundary if you have to. */
887 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
888 /* FIXME, we should provide some way to free raw_ardata when
889 we are done using the strings from it. For now, it seems
890 to be allocated on an objalloc anyway... */
891 bfd_has_map (abfd) = TRUE;
892 return TRUE;
895 /* Read a COFF archive symbol table. Returns FALSE on error, TRUE
896 otherwise. */
898 static bfd_boolean
899 do_slurp_coff_armap (bfd *abfd)
901 struct areltdata *mapdata;
902 int *raw_armap, *rawptr;
903 struct artdata *ardata = bfd_ardata (abfd);
904 char *stringbase;
905 bfd_size_type stringsize;
906 unsigned int parsed_size;
907 carsym *carsyms;
908 bfd_size_type nsymz; /* Number of symbols in armap. */
909 bfd_vma (*swap) (const void *);
910 char int_buf[sizeof (long)];
911 bfd_size_type carsym_size, ptrsize;
912 unsigned int i;
914 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
915 if (mapdata == NULL)
916 return FALSE;
917 parsed_size = mapdata->parsed_size;
918 bfd_release (abfd, mapdata); /* Don't need it any more. */
920 if (bfd_bread (int_buf, 4, abfd) != 4)
922 if (bfd_get_error () != bfd_error_system_call)
923 bfd_set_error (bfd_error_malformed_archive);
924 return FALSE;
926 /* It seems that all numeric information in a coff archive is always
927 in big endian format, nomatter the host or target. */
928 swap = bfd_getb32;
929 nsymz = bfd_getb32 (int_buf);
930 stringsize = parsed_size - (4 * nsymz) - 4;
932 /* ... except that some archive formats are broken, and it may be our
933 fault - the i960 little endian coff sometimes has big and sometimes
934 little, because our tools changed. Here's a horrible hack to clean
935 up the crap. */
937 if (stringsize > 0xfffff
938 && bfd_get_arch (abfd) == bfd_arch_i960
939 && bfd_get_flavour (abfd) == bfd_target_coff_flavour)
941 /* This looks dangerous, let's do it the other way around. */
942 nsymz = bfd_getl32 (int_buf);
943 stringsize = parsed_size - (4 * nsymz) - 4;
944 swap = bfd_getl32;
947 /* The coff armap must be read sequentially. So we construct a
948 bsd-style one in core all at once, for simplicity. */
950 if (nsymz > ~ (bfd_size_type) 0 / sizeof (carsym))
951 return FALSE;
953 carsym_size = (nsymz * sizeof (carsym));
954 ptrsize = (4 * nsymz);
956 if (carsym_size + stringsize + 1 <= carsym_size)
957 return FALSE;
959 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd,
960 carsym_size + stringsize + 1);
961 if (ardata->symdefs == NULL)
962 return FALSE;
963 carsyms = ardata->symdefs;
964 stringbase = ((char *) ardata->symdefs) + carsym_size;
966 /* Allocate and read in the raw offsets. */
967 raw_armap = (int *) bfd_alloc (abfd, ptrsize);
968 if (raw_armap == NULL)
969 goto release_symdefs;
970 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
971 || (bfd_bread (stringbase, stringsize, abfd) != stringsize))
973 if (bfd_get_error () != bfd_error_system_call)
974 bfd_set_error (bfd_error_malformed_archive);
975 goto release_raw_armap;
978 /* OK, build the carsyms. */
979 for (i = 0; i < nsymz; i++)
981 rawptr = raw_armap + i;
982 carsyms->file_offset = swap ((bfd_byte *) rawptr);
983 carsyms->name = stringbase;
984 stringbase += strlen (stringbase) + 1;
985 carsyms++;
987 *stringbase = 0;
989 ardata->symdef_count = nsymz;
990 ardata->first_file_filepos = bfd_tell (abfd);
991 /* Pad to an even boundary if you have to. */
992 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
994 bfd_has_map (abfd) = TRUE;
995 bfd_release (abfd, raw_armap);
997 /* Check for a second archive header (as used by PE). */
999 struct areltdata *tmp;
1001 bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET);
1002 tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd);
1003 if (tmp != NULL)
1005 if (tmp->arch_header[0] == '/'
1006 && tmp->arch_header[1] == ' ')
1008 ardata->first_file_filepos +=
1009 (tmp->parsed_size + sizeof (struct ar_hdr) + 1) & ~(unsigned) 1;
1011 bfd_release (abfd, tmp);
1015 return TRUE;
1017 release_raw_armap:
1018 bfd_release (abfd, raw_armap);
1019 release_symdefs:
1020 bfd_release (abfd, (ardata)->symdefs);
1021 return FALSE;
1024 /* This routine can handle either coff-style or bsd-style armaps
1025 (archive symbol table). Returns FALSE on error, TRUE otherwise */
1027 bfd_boolean
1028 bfd_slurp_armap (bfd *abfd)
1030 char nextname[17];
1031 int i = bfd_bread (nextname, 16, abfd);
1033 if (i == 0)
1034 return TRUE;
1035 if (i != 16)
1036 return FALSE;
1038 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
1039 return FALSE;
1041 if (CONST_STRNEQ (nextname, "__.SYMDEF ")
1042 || CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */
1043 return do_slurp_bsd_armap (abfd);
1044 else if (CONST_STRNEQ (nextname, "/ "))
1045 return do_slurp_coff_armap (abfd);
1046 else if (CONST_STRNEQ (nextname, "/SYM64/ "))
1048 /* 64bit ELF (Irix 6) archive. */
1049 #ifdef BFD64
1050 extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
1051 return bfd_elf64_archive_slurp_armap (abfd);
1052 #else
1053 bfd_set_error (bfd_error_wrong_format);
1054 return FALSE;
1055 #endif
1057 else if (CONST_STRNEQ (nextname, "#1/20 "))
1059 /* Mach-O has a special name for armap when the map is sorted by name.
1060 However because this name has a space it is slightly more difficult
1061 to check it. */
1062 struct ar_hdr hdr;
1063 char extname[21];
1065 if (bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
1066 return FALSE;
1067 /* Read the extended name. We know its length. */
1068 if (bfd_bread (extname, 20, abfd) != 20)
1069 return FALSE;
1070 if (bfd_seek (abfd, (file_ptr) -(sizeof (hdr) + 20), SEEK_CUR) != 0)
1071 return FALSE;
1072 if (CONST_STRNEQ (extname, "__.SYMDEF SORTED"))
1073 return do_slurp_bsd_armap (abfd);
1076 bfd_has_map (abfd) = FALSE;
1077 return TRUE;
1080 /* Returns FALSE on error, TRUE otherwise. */
1081 /* Flavor 2 of a bsd armap, similar to bfd_slurp_bsd_armap except the
1082 header is in a slightly different order and the map name is '/'.
1083 This flavour is used by hp300hpux. */
1085 #define HPUX_SYMDEF_COUNT_SIZE 2
1087 bfd_boolean
1088 bfd_slurp_bsd_armap_f2 (bfd *abfd)
1090 struct areltdata *mapdata;
1091 char nextname[17];
1092 unsigned int counter;
1093 bfd_byte *raw_armap, *rbase;
1094 struct artdata *ardata = bfd_ardata (abfd);
1095 char *stringbase;
1096 unsigned int stringsize;
1097 bfd_size_type amt;
1098 carsym *set;
1099 int i = bfd_bread (nextname, 16, abfd);
1101 if (i == 0)
1102 return TRUE;
1103 if (i != 16)
1104 return FALSE;
1106 /* The archive has at least 16 bytes in it. */
1107 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
1108 return FALSE;
1110 if (CONST_STRNEQ (nextname, "__.SYMDEF ")
1111 || CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */
1112 return do_slurp_bsd_armap (abfd);
1114 if (! CONST_STRNEQ (nextname, "/ "))
1116 bfd_has_map (abfd) = FALSE;
1117 return TRUE;
1120 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
1121 if (mapdata == NULL)
1122 return FALSE;
1124 amt = mapdata->parsed_size;
1125 raw_armap = (bfd_byte *) bfd_zalloc (abfd, amt);
1126 if (raw_armap == NULL)
1128 byebye:
1129 bfd_release (abfd, mapdata);
1130 return FALSE;
1133 if (bfd_bread (raw_armap, amt, abfd) != amt)
1135 if (bfd_get_error () != bfd_error_system_call)
1136 bfd_set_error (bfd_error_malformed_archive);
1137 byebyebye:
1138 bfd_release (abfd, raw_armap);
1139 goto byebye;
1142 ardata->symdef_count = H_GET_16 (abfd, raw_armap);
1144 if (ardata->symdef_count * BSD_SYMDEF_SIZE
1145 > mapdata->parsed_size - HPUX_SYMDEF_COUNT_SIZE)
1147 /* Probably we're using the wrong byte ordering. */
1148 bfd_set_error (bfd_error_wrong_format);
1149 goto byebyebye;
1152 ardata->cache = 0;
1154 stringsize = H_GET_32 (abfd, raw_armap + HPUX_SYMDEF_COUNT_SIZE);
1155 /* Skip sym count and string sz. */
1156 stringbase = ((char *) raw_armap
1157 + HPUX_SYMDEF_COUNT_SIZE
1158 + BSD_STRING_COUNT_SIZE);
1159 rbase = (bfd_byte *) stringbase + stringsize;
1160 amt = ardata->symdef_count * BSD_SYMDEF_SIZE;
1161 ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt);
1162 if (!ardata->symdefs)
1163 return FALSE;
1165 for (counter = 0, set = ardata->symdefs;
1166 counter < ardata->symdef_count;
1167 counter++, set++, rbase += BSD_SYMDEF_SIZE)
1169 set->name = H_GET_32 (abfd, rbase) + stringbase;
1170 set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE);
1173 ardata->first_file_filepos = bfd_tell (abfd);
1174 /* Pad to an even boundary if you have to. */
1175 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
1176 /* FIXME, we should provide some way to free raw_ardata when
1177 we are done using the strings from it. For now, it seems
1178 to be allocated on an objalloc anyway... */
1179 bfd_has_map (abfd) = TRUE;
1180 return TRUE;
1183 /** Extended name table.
1185 Normally archives support only 14-character filenames.
1187 Intel has extended the format: longer names are stored in a special
1188 element (the first in the archive, or second if there is an armap);
1189 the name in the ar_hdr is replaced by <space><index into filename
1190 element>. Index is the P.R. of an int (decimal). Data General have
1191 extended the format by using the prefix // for the special element. */
1193 /* Returns FALSE on error, TRUE otherwise. */
1195 bfd_boolean
1196 _bfd_slurp_extended_name_table (bfd *abfd)
1198 char nextname[17];
1199 struct areltdata *namedata;
1200 bfd_size_type amt;
1202 /* FIXME: Formatting sucks here, and in case of failure of BFD_READ,
1203 we probably don't want to return TRUE. */
1204 bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET);
1205 if (bfd_bread (nextname, 16, abfd) == 16)
1207 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
1208 return FALSE;
1210 if (! CONST_STRNEQ (nextname, "ARFILENAMES/ ")
1211 && ! CONST_STRNEQ (nextname, "// "))
1213 bfd_ardata (abfd)->extended_names = NULL;
1214 bfd_ardata (abfd)->extended_names_size = 0;
1215 return TRUE;
1218 namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
1219 if (namedata == NULL)
1220 return FALSE;
1222 amt = namedata->parsed_size;
1223 if (amt + 1 == 0)
1224 goto byebye;
1226 bfd_ardata (abfd)->extended_names_size = amt;
1227 bfd_ardata (abfd)->extended_names = (char *) bfd_zalloc (abfd, amt + 1);
1228 if (bfd_ardata (abfd)->extended_names == NULL)
1230 byebye:
1231 bfd_release (abfd, namedata);
1232 return FALSE;
1235 if (bfd_bread (bfd_ardata (abfd)->extended_names, amt, abfd) != amt)
1237 if (bfd_get_error () != bfd_error_system_call)
1238 bfd_set_error (bfd_error_malformed_archive);
1239 bfd_release (abfd, (bfd_ardata (abfd)->extended_names));
1240 bfd_ardata (abfd)->extended_names = NULL;
1241 goto byebye;
1244 /* Since the archive is supposed to be printable if it contains
1245 text, the entries in the list are newline-padded, not null
1246 padded. In SVR4-style archives, the names also have a
1247 trailing '/'. DOS/NT created archive often have \ in them
1248 We'll fix all problems here.. */
1250 char *ext_names = bfd_ardata (abfd)->extended_names;
1251 char *temp = ext_names;
1252 char *limit = temp + namedata->parsed_size;
1253 for (; temp < limit; ++temp)
1255 if (*temp == ARFMAG[1])
1256 temp[temp > ext_names && temp[-1] == '/' ? -1 : 0] = '\0';
1257 if (*temp == '\\')
1258 *temp = '/';
1260 *limit = '\0';
1263 /* Pad to an even boundary if you have to. */
1264 bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd);
1265 bfd_ardata (abfd)->first_file_filepos +=
1266 (bfd_ardata (abfd)->first_file_filepos) % 2;
1268 /* FIXME, we can't release namedata here because it was allocated
1269 below extended_names on the objalloc... */
1271 return TRUE;
1274 #ifdef VMS
1276 /* Return a copy of the stuff in the filename between any :]> and a
1277 semicolon. */
1279 static const char *
1280 normalize (bfd *abfd, const char *file)
1282 const char *first;
1283 const char *last;
1284 char *copy;
1286 first = file + strlen (file) - 1;
1287 last = first + 1;
1289 while (first != file)
1291 if (*first == ';')
1292 last = first;
1293 if (*first == ':' || *first == ']' || *first == '>')
1295 first++;
1296 break;
1298 first--;
1301 copy = bfd_alloc (abfd, last - first + 1);
1302 if (copy == NULL)
1303 return NULL;
1305 memcpy (copy, first, last - first);
1306 copy[last - first] = 0;
1308 return copy;
1311 #else
1312 static const char *
1313 normalize (bfd *abfd ATTRIBUTE_UNUSED, const char *file)
1315 return lbasename (file);
1317 #endif
1319 /* Adjust a relative path name based on the reference path. */
1321 static const char *
1322 adjust_relative_path (const char * path, const char * ref_path)
1324 static char *pathbuf = NULL;
1325 static int pathbuf_len = 0;
1326 const char *pathp = path;
1327 const char *refp = ref_path;
1328 int element_count = 0;
1329 int len;
1330 char *newp;
1332 /* Remove common leading path elements. */
1333 for (;;)
1335 const char *e1 = pathp;
1336 const char *e2 = refp;
1338 while (*e1 && ! IS_DIR_SEPARATOR (*e1))
1339 ++e1;
1340 while (*e2 && ! IS_DIR_SEPARATOR (*e2))
1341 ++e2;
1342 if (*e1 == '\0' || *e2 == '\0' || e1 - pathp != e2 - refp
1343 || strncmp (pathp, refp, e1 - pathp) != 0)
1344 break;
1345 pathp = e1 + 1;
1346 refp = e2 + 1;
1349 /* For each leading path element in the reference path,
1350 insert "../" into the path. */
1351 for (; *refp; ++refp)
1352 if (IS_DIR_SEPARATOR (*refp))
1353 ++element_count;
1354 len = 3 * element_count + strlen (path) + 1;
1356 if (len > pathbuf_len)
1358 if (pathbuf != NULL)
1359 free (pathbuf);
1360 pathbuf_len = 0;
1361 pathbuf = (char *) bfd_malloc (len);
1362 if (pathbuf == NULL)
1363 return path;
1364 pathbuf_len = len;
1367 newp = pathbuf;
1368 while (element_count-- > 0)
1370 /* FIXME: Support Windows style path separators as well. */
1371 strcpy (newp, "../");
1372 newp += 3;
1374 strcpy (newp, pathp);
1376 return pathbuf;
1379 /* Build a BFD style extended name table. */
1381 bfd_boolean
1382 _bfd_archive_bsd_construct_extended_name_table (bfd *abfd,
1383 char **tabloc,
1384 bfd_size_type *tablen,
1385 const char **name)
1387 *name = "ARFILENAMES/";
1388 return _bfd_construct_extended_name_table (abfd, FALSE, tabloc, tablen);
1391 /* Build an SVR4 style extended name table. */
1393 bfd_boolean
1394 _bfd_archive_coff_construct_extended_name_table (bfd *abfd,
1395 char **tabloc,
1396 bfd_size_type *tablen,
1397 const char **name)
1399 *name = "//";
1400 return _bfd_construct_extended_name_table (abfd, TRUE, tabloc, tablen);
1403 /* Follows archive_head and produces an extended name table if
1404 necessary. Returns (in tabloc) a pointer to an extended name
1405 table, and in tablen the length of the table. If it makes an entry
1406 it clobbers the filename so that the element may be written without
1407 further massage. Returns TRUE if it ran successfully, FALSE if
1408 something went wrong. A successful return may still involve a
1409 zero-length tablen! */
1411 bfd_boolean
1412 _bfd_construct_extended_name_table (bfd *abfd,
1413 bfd_boolean trailing_slash,
1414 char **tabloc,
1415 bfd_size_type *tablen)
1417 unsigned int maxname = abfd->xvec->ar_max_namelen;
1418 bfd_size_type total_namelen = 0;
1419 bfd *current;
1420 char *strptr;
1421 const char *last_filename;
1422 long last_stroff;
1424 *tablen = 0;
1425 last_filename = NULL;
1427 /* Figure out how long the table should be. */
1428 for (current = abfd->archive_head;
1429 current != NULL;
1430 current = current->archive_next)
1432 const char *normal;
1433 unsigned int thislen;
1435 if (bfd_is_thin_archive (abfd))
1437 const char *filename = current->filename;
1439 /* If the element being added is a member of another archive
1440 (i.e., we are flattening), use the containing archive's name. */
1441 if (current->my_archive
1442 && ! bfd_is_thin_archive (current->my_archive))
1443 filename = current->my_archive->filename;
1445 /* If the path is the same as the previous path seen,
1446 reuse it. This can happen when flattening a thin
1447 archive that contains other archives. */
1448 if (last_filename && strcmp (last_filename, filename) == 0)
1449 continue;
1451 last_filename = filename;
1453 /* If the path is relative, adjust it relative to
1454 the containing archive. */
1455 if (! IS_ABSOLUTE_PATH (filename)
1456 && ! IS_ABSOLUTE_PATH (abfd->filename))
1457 normal = adjust_relative_path (filename, abfd->filename);
1458 else
1459 normal = filename;
1461 /* In a thin archive, always store the full pathname
1462 in the extended name table. */
1463 total_namelen += strlen (normal) + 1;
1464 if (trailing_slash)
1465 /* Leave room for trailing slash. */
1466 ++total_namelen;
1468 continue;
1471 normal = normalize (current, current->filename);
1472 if (normal == NULL)
1473 return FALSE;
1475 thislen = strlen (normal);
1477 if (thislen > maxname
1478 && (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0)
1479 thislen = maxname;
1481 if (thislen > maxname)
1483 /* Add one to leave room for \n. */
1484 total_namelen += thislen + 1;
1485 if (trailing_slash)
1487 /* Leave room for trailing slash. */
1488 ++total_namelen;
1491 else
1493 struct ar_hdr *hdr = arch_hdr (current);
1494 if (strncmp (normal, hdr->ar_name, thislen) != 0
1495 || (thislen < sizeof hdr->ar_name
1496 && hdr->ar_name[thislen] != ar_padchar (current)))
1498 /* Must have been using extended format even though it
1499 didn't need to. Fix it to use normal format. */
1500 memcpy (hdr->ar_name, normal, thislen);
1501 if (thislen < maxname
1502 || (thislen == maxname && thislen < sizeof hdr->ar_name))
1503 hdr->ar_name[thislen] = ar_padchar (current);
1508 if (total_namelen == 0)
1509 return TRUE;
1511 *tabloc = (char *) bfd_zalloc (abfd, total_namelen);
1512 if (*tabloc == NULL)
1513 return FALSE;
1515 *tablen = total_namelen;
1516 strptr = *tabloc;
1518 last_filename = NULL;
1519 last_stroff = 0;
1521 for (current = abfd->archive_head;
1522 current != NULL;
1523 current = current->archive_next)
1525 const char *normal;
1526 unsigned int thislen;
1527 long stroff;
1528 const char *filename = current->filename;
1530 if (bfd_is_thin_archive (abfd))
1532 /* If the element being added is a member of another archive
1533 (i.e., we are flattening), use the containing archive's name. */
1534 if (current->my_archive
1535 && ! bfd_is_thin_archive (current->my_archive))
1536 filename = current->my_archive->filename;
1537 /* If the path is the same as the previous path seen,
1538 reuse it. This can happen when flattening a thin
1539 archive that contains other archives.
1540 If the path is relative, adjust it relative to
1541 the containing archive. */
1542 if (last_filename && strcmp (last_filename, filename) == 0)
1543 normal = last_filename;
1544 else if (! IS_ABSOLUTE_PATH (filename)
1545 && ! IS_ABSOLUTE_PATH (abfd->filename))
1546 normal = adjust_relative_path (filename, abfd->filename);
1547 else
1548 normal = filename;
1550 else
1552 normal = normalize (current, filename);
1553 if (normal == NULL)
1554 return FALSE;
1557 thislen = strlen (normal);
1558 if (thislen > maxname || bfd_is_thin_archive (abfd))
1560 /* Works for now; may need to be re-engineered if we
1561 encounter an oddball archive format and want to
1562 generalise this hack. */
1563 struct ar_hdr *hdr = arch_hdr (current);
1564 if (normal == last_filename)
1565 stroff = last_stroff;
1566 else
1568 strcpy (strptr, normal);
1569 if (! trailing_slash)
1570 strptr[thislen] = ARFMAG[1];
1571 else
1573 strptr[thislen] = '/';
1574 strptr[thislen + 1] = ARFMAG[1];
1576 stroff = strptr - *tabloc;
1577 last_stroff = stroff;
1579 hdr->ar_name[0] = ar_padchar (current);
1580 if (bfd_is_thin_archive (abfd) && current->origin > 0)
1582 int len = snprintf (hdr->ar_name + 1, maxname - 1, "%-ld:",
1583 stroff);
1584 _bfd_ar_spacepad (hdr->ar_name + 1 + len, maxname - 1 - len,
1585 "%-ld",
1586 current->origin - sizeof (struct ar_hdr));
1588 else
1589 _bfd_ar_spacepad (hdr->ar_name + 1, maxname - 1, "%-ld", stroff);
1590 if (normal != last_filename)
1592 strptr += thislen + 1;
1593 if (trailing_slash)
1594 ++strptr;
1595 last_filename = filename;
1600 return TRUE;
1603 /* A couple of functions for creating ar_hdrs. */
1605 #ifdef HPUX_LARGE_AR_IDS
1606 /* Function to encode large UID/GID values according to HP. */
1608 static void
1609 hpux_uid_gid_encode (char str[6], long int id)
1611 int cnt;
1613 str[5] = '@' + (id & 3);
1614 id >>= 2;
1616 for (cnt = 4; cnt >= 0; --cnt, id >>= 6)
1617 str[cnt] = ' ' + (id & 0x3f);
1619 #endif /* HPUX_LARGE_AR_IDS */
1621 #ifndef HAVE_GETUID
1622 #define getuid() 0
1623 #endif
1625 #ifndef HAVE_GETGID
1626 #define getgid() 0
1627 #endif
1629 /* Takes a filename, returns an arelt_data for it, or NULL if it can't
1630 make one. The filename must refer to a filename in the filesystem.
1631 The filename field of the ar_hdr will NOT be initialized. If member
1632 is set, and it's an in-memory bfd, we fake it. */
1634 static struct areltdata *
1635 bfd_ar_hdr_from_filesystem (bfd *abfd, const char *filename, bfd *member)
1637 struct stat status;
1638 struct areltdata *ared;
1639 struct ar_hdr *hdr;
1640 bfd_size_type amt;
1642 if (member && (member->flags & BFD_IN_MEMORY) != 0)
1644 /* Assume we just "made" the member, and fake it. */
1645 struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream;
1646 time (&status.st_mtime);
1647 status.st_uid = getuid ();
1648 status.st_gid = getgid ();
1649 status.st_mode = 0644;
1650 status.st_size = bim->size;
1652 else if (stat (filename, &status) != 0)
1654 bfd_set_error (bfd_error_system_call);
1655 return NULL;
1658 /* If the caller requested that the BFD generate deterministic output,
1659 fake values for modification time, UID, GID, and file mode. */
1660 if ((abfd->flags & BFD_DETERMINISTIC_OUTPUT) != 0)
1662 status.st_mtime = 0;
1663 status.st_uid = 0;
1664 status.st_gid = 0;
1665 status.st_mode = 0644;
1668 amt = sizeof (struct ar_hdr) + sizeof (struct areltdata);
1669 ared = (struct areltdata *) bfd_zalloc (abfd, amt);
1670 if (ared == NULL)
1671 return NULL;
1672 hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata));
1674 /* ar headers are space padded, not null padded! */
1675 memset (hdr, ' ', sizeof (struct ar_hdr));
1677 _bfd_ar_spacepad (hdr->ar_date, sizeof (hdr->ar_date), "%-12ld",
1678 status.st_mtime);
1679 #ifdef HPUX_LARGE_AR_IDS
1680 /* HP has a very "special" way to handle UID/GID's with numeric values
1681 > 99999. */
1682 if (status.st_uid > 99999)
1683 hpux_uid_gid_encode (hdr->ar_uid, (long) status.st_uid);
1684 else
1685 #endif
1686 _bfd_ar_spacepad (hdr->ar_uid, sizeof (hdr->ar_uid), "%ld",
1687 status.st_uid);
1688 #ifdef HPUX_LARGE_AR_IDS
1689 /* HP has a very "special" way to handle UID/GID's with numeric values
1690 > 99999. */
1691 if (status.st_gid > 99999)
1692 hpux_uid_gid_encode (hdr->ar_gid, (long) status.st_gid);
1693 else
1694 #endif
1695 _bfd_ar_spacepad (hdr->ar_gid, sizeof (hdr->ar_gid), "%ld",
1696 status.st_gid);
1697 _bfd_ar_spacepad (hdr->ar_mode, sizeof (hdr->ar_mode), "%-8lo",
1698 status.st_mode);
1699 _bfd_ar_spacepad (hdr->ar_size, sizeof (hdr->ar_size), "%-10ld",
1700 status.st_size);
1701 memcpy (hdr->ar_fmag, ARFMAG, 2);
1702 ared->parsed_size = status.st_size;
1703 ared->arch_header = (char *) hdr;
1705 return ared;
1708 /* Analogous to stat call. */
1711 bfd_generic_stat_arch_elt (bfd *abfd, struct stat *buf)
1713 struct ar_hdr *hdr;
1714 char *aloser;
1716 if (abfd->arelt_data == NULL)
1718 bfd_set_error (bfd_error_invalid_operation);
1719 return -1;
1722 hdr = arch_hdr (abfd);
1724 #define foo(arelt, stelt, size) \
1725 buf->stelt = strtol (hdr->arelt, &aloser, size); \
1726 if (aloser == hdr->arelt) \
1727 return -1;
1729 /* Some platforms support special notations for large IDs. */
1730 #ifdef HPUX_LARGE_AR_IDS
1731 # define foo2(arelt, stelt, size) \
1732 if (hdr->arelt[5] == ' ') \
1734 foo (arelt, stelt, size); \
1736 else \
1738 int cnt; \
1739 for (buf->stelt = cnt = 0; cnt < 5; ++cnt) \
1741 if (hdr->arelt[cnt] < ' ' || hdr->arelt[cnt] > ' ' + 0x3f) \
1742 return -1; \
1743 buf->stelt <<= 6; \
1744 buf->stelt += hdr->arelt[cnt] - ' '; \
1746 if (hdr->arelt[5] < '@' || hdr->arelt[5] > '@' + 3) \
1747 return -1; \
1748 buf->stelt <<= 2; \
1749 buf->stelt += hdr->arelt[5] - '@'; \
1751 #else
1752 # define foo2(arelt, stelt, size) foo (arelt, stelt, size)
1753 #endif
1755 foo (ar_date, st_mtime, 10);
1756 foo2 (ar_uid, st_uid, 10);
1757 foo2 (ar_gid, st_gid, 10);
1758 foo (ar_mode, st_mode, 8);
1760 buf->st_size = arch_eltdata (abfd)->parsed_size;
1762 return 0;
1765 void
1766 bfd_dont_truncate_arname (bfd *abfd, const char *pathname, char *arhdr)
1768 /* FIXME: This interacts unpleasantly with ar's quick-append option.
1769 Fortunately ic960 users will never use that option. Fixing this
1770 is very hard; fortunately I know how to do it and will do so once
1771 intel's release is out the door. */
1773 struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
1774 size_t length;
1775 const char *filename;
1776 size_t maxlen = ar_maxnamelen (abfd);
1778 if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0)
1780 bfd_bsd_truncate_arname (abfd, pathname, arhdr);
1781 return;
1784 filename = normalize (abfd, pathname);
1785 if (filename == NULL)
1787 /* FIXME */
1788 abort ();
1791 length = strlen (filename);
1793 if (length <= maxlen)
1794 memcpy (hdr->ar_name, filename, length);
1796 /* Add the padding character if there is room for it. */
1797 if (length < maxlen
1798 || (length == maxlen && length < sizeof hdr->ar_name))
1799 (hdr->ar_name)[length] = ar_padchar (abfd);
1802 void
1803 bfd_bsd_truncate_arname (bfd *abfd, const char *pathname, char *arhdr)
1805 struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
1806 size_t length;
1807 const char *filename = lbasename (pathname);
1808 size_t maxlen = ar_maxnamelen (abfd);
1810 length = strlen (filename);
1812 if (length <= maxlen)
1813 memcpy (hdr->ar_name, filename, length);
1814 else
1816 /* pathname: meet procrustes */
1817 memcpy (hdr->ar_name, filename, maxlen);
1818 length = maxlen;
1821 if (length < maxlen)
1822 (hdr->ar_name)[length] = ar_padchar (abfd);
1825 /* Store name into ar header. Truncates the name to fit.
1826 1> strip pathname to be just the basename.
1827 2> if it's short enuf to fit, stuff it in.
1828 3> If it doesn't end with .o, truncate it to fit
1829 4> truncate it before the .o, append .o, stuff THAT in. */
1831 /* This is what gnu ar does. It's better but incompatible with the
1832 bsd ar. */
1834 void
1835 bfd_gnu_truncate_arname (bfd *abfd, const char *pathname, char *arhdr)
1837 struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
1838 size_t length;
1839 const char *filename = lbasename (pathname);
1840 size_t maxlen = ar_maxnamelen (abfd);
1842 length = strlen (filename);
1844 if (length <= maxlen)
1845 memcpy (hdr->ar_name, filename, length);
1846 else
1848 /* pathname: meet procrustes. */
1849 memcpy (hdr->ar_name, filename, maxlen);
1850 if ((filename[length - 2] == '.') && (filename[length - 1] == 'o'))
1852 hdr->ar_name[maxlen - 2] = '.';
1853 hdr->ar_name[maxlen - 1] = 'o';
1855 length = maxlen;
1858 if (length < 16)
1859 (hdr->ar_name)[length] = ar_padchar (abfd);
1862 /* The BFD is open for write and has its format set to bfd_archive. */
1864 bfd_boolean
1865 _bfd_write_archive_contents (bfd *arch)
1867 bfd *current;
1868 char *etable = NULL;
1869 bfd_size_type elength = 0;
1870 const char *ename = NULL;
1871 bfd_boolean makemap = bfd_has_map (arch);
1872 /* If no .o's, don't bother to make a map. */
1873 bfd_boolean hasobjects = FALSE;
1874 bfd_size_type wrote;
1875 int tries;
1876 char *armag;
1878 /* Verify the viability of all entries; if any of them live in the
1879 filesystem (as opposed to living in an archive open for input)
1880 then construct a fresh ar_hdr for them. */
1881 for (current = arch->archive_head;
1882 current != NULL;
1883 current = current->archive_next)
1885 /* This check is checking the bfds for the objects we're reading
1886 from (which are usually either an object file or archive on
1887 disk), not the archive entries we're writing to. We don't
1888 actually create bfds for the archive members, we just copy
1889 them byte-wise when we write out the archive. */
1890 if (bfd_write_p (current))
1892 bfd_set_error (bfd_error_invalid_operation);
1893 goto input_err;
1895 if (!current->arelt_data)
1897 current->arelt_data =
1898 bfd_ar_hdr_from_filesystem (arch, current->filename, current);
1899 if (!current->arelt_data)
1900 goto input_err;
1902 /* Put in the file name. */
1903 BFD_SEND (arch, _bfd_truncate_arname,
1904 (arch, current->filename, (char *) arch_hdr (current)));
1907 if (makemap && ! hasobjects)
1908 { /* Don't bother if we won't make a map! */
1909 if ((bfd_check_format (current, bfd_object)))
1910 hasobjects = TRUE;
1914 if (!BFD_SEND (arch, _bfd_construct_extended_name_table,
1915 (arch, &etable, &elength, &ename)))
1916 return FALSE;
1918 if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0)
1919 return FALSE;
1920 armag = ARMAG;
1921 if (bfd_is_thin_archive (arch))
1922 armag = ARMAGT;
1923 wrote = bfd_bwrite (armag, SARMAG, arch);
1924 if (wrote != SARMAG)
1925 return FALSE;
1927 if (makemap && hasobjects)
1929 if (! _bfd_compute_and_write_armap (arch, (unsigned int) elength))
1930 return FALSE;
1933 if (elength != 0)
1935 struct ar_hdr hdr;
1937 memset (&hdr, ' ', sizeof (struct ar_hdr));
1938 memcpy (hdr.ar_name, ename, strlen (ename));
1939 /* Round size up to even number in archive header. */
1940 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld",
1941 (elength + 1) & ~(bfd_size_type) 1);
1942 memcpy (hdr.ar_fmag, ARFMAG, 2);
1943 if ((bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
1944 != sizeof (struct ar_hdr))
1945 || bfd_bwrite (etable, elength, arch) != elength)
1946 return FALSE;
1947 if ((elength % 2) == 1)
1949 if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1)
1950 return FALSE;
1954 for (current = arch->archive_head;
1955 current != NULL;
1956 current = current->archive_next)
1958 char buffer[DEFAULT_BUFFERSIZE];
1959 unsigned int remaining = arelt_size (current);
1960 struct ar_hdr *hdr = arch_hdr (current);
1962 /* Write ar header. */
1963 if (bfd_bwrite (hdr, sizeof (*hdr), arch)
1964 != sizeof (*hdr))
1965 return FALSE;
1966 if (bfd_is_thin_archive (arch))
1967 continue;
1968 if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0)
1969 goto input_err;
1971 while (remaining)
1973 unsigned int amt = DEFAULT_BUFFERSIZE;
1975 if (amt > remaining)
1976 amt = remaining;
1977 errno = 0;
1978 if (bfd_bread (buffer, amt, current) != amt)
1980 if (bfd_get_error () != bfd_error_system_call)
1981 bfd_set_error (bfd_error_file_truncated);
1982 goto input_err;
1984 if (bfd_bwrite (buffer, amt, arch) != amt)
1985 return FALSE;
1986 remaining -= amt;
1989 if ((arelt_size (current) % 2) == 1)
1991 if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1)
1992 return FALSE;
1996 if (makemap && hasobjects)
1998 /* Verify the timestamp in the archive file. If it would not be
1999 accepted by the linker, rewrite it until it would be. If
2000 anything odd happens, break out and just return. (The
2001 Berkeley linker checks the timestamp and refuses to read the
2002 table-of-contents if it is >60 seconds less than the file's
2003 modified-time. That painful hack requires this painful hack. */
2004 tries = 1;
2007 if (bfd_update_armap_timestamp (arch))
2008 break;
2009 (*_bfd_error_handler)
2010 (_("Warning: writing archive was slow: rewriting timestamp\n"));
2012 while (++tries < 6);
2015 return TRUE;
2017 input_err:
2018 bfd_set_error (bfd_error_on_input, current, bfd_get_error ());
2019 return FALSE;
2022 /* Note that the namidx for the first symbol is 0. */
2024 bfd_boolean
2025 _bfd_compute_and_write_armap (bfd *arch, unsigned int elength)
2027 char *first_name = NULL;
2028 bfd *current;
2029 file_ptr elt_no = 0;
2030 struct orl *map = NULL;
2031 unsigned int orl_max = 1024; /* Fine initial default. */
2032 unsigned int orl_count = 0;
2033 int stridx = 0;
2034 asymbol **syms = NULL;
2035 long syms_max = 0;
2036 bfd_boolean ret;
2037 bfd_size_type amt;
2039 /* Dunno if this is the best place for this info... */
2040 if (elength != 0)
2041 elength += sizeof (struct ar_hdr);
2042 elength += elength % 2;
2044 amt = orl_max * sizeof (struct orl);
2045 map = (struct orl *) bfd_malloc (amt);
2046 if (map == NULL)
2047 goto error_return;
2049 /* We put the symbol names on the arch objalloc, and then discard
2050 them when done. */
2051 first_name = (char *) bfd_alloc (arch, 1);
2052 if (first_name == NULL)
2053 goto error_return;
2055 /* Drop all the files called __.SYMDEF, we're going to make our own. */
2056 while (arch->archive_head
2057 && strcmp (arch->archive_head->filename, "__.SYMDEF") == 0)
2058 arch->archive_head = arch->archive_head->archive_next;
2060 /* Map over each element. */
2061 for (current = arch->archive_head;
2062 current != NULL;
2063 current = current->archive_next, elt_no++)
2065 if (bfd_check_format (current, bfd_object)
2066 && (bfd_get_file_flags (current) & HAS_SYMS) != 0)
2068 long storage;
2069 long symcount;
2070 long src_count;
2072 storage = bfd_get_symtab_upper_bound (current);
2073 if (storage < 0)
2074 goto error_return;
2076 if (storage != 0)
2078 if (storage > syms_max)
2080 if (syms_max > 0)
2081 free (syms);
2082 syms_max = storage;
2083 syms = (asymbol **) bfd_malloc (syms_max);
2084 if (syms == NULL)
2085 goto error_return;
2087 symcount = bfd_canonicalize_symtab (current, syms);
2088 if (symcount < 0)
2089 goto error_return;
2091 /* Now map over all the symbols, picking out the ones we
2092 want. */
2093 for (src_count = 0; src_count < symcount; src_count++)
2095 flagword flags = (syms[src_count])->flags;
2096 asection *sec = syms[src_count]->section;
2098 if ((flags & BSF_GLOBAL
2099 || flags & BSF_WEAK
2100 || flags & BSF_INDIRECT
2101 || bfd_is_com_section (sec))
2102 && ! bfd_is_und_section (sec))
2104 bfd_size_type namelen;
2105 struct orl *new_map;
2107 /* This symbol will go into the archive header. */
2108 if (orl_count == orl_max)
2110 orl_max *= 2;
2111 amt = orl_max * sizeof (struct orl);
2112 new_map = (struct orl *) bfd_realloc (map, amt);
2113 if (new_map == NULL)
2114 goto error_return;
2116 map = new_map;
2119 namelen = strlen (syms[src_count]->name);
2120 amt = sizeof (char *);
2121 map[orl_count].name = (char **) bfd_alloc (arch, amt);
2122 if (map[orl_count].name == NULL)
2123 goto error_return;
2124 *(map[orl_count].name) = (char *) bfd_alloc (arch,
2125 namelen + 1);
2126 if (*(map[orl_count].name) == NULL)
2127 goto error_return;
2128 strcpy (*(map[orl_count].name), syms[src_count]->name);
2129 map[orl_count].u.abfd = current;
2130 map[orl_count].namidx = stridx;
2132 stridx += namelen + 1;
2133 ++orl_count;
2138 /* Now ask the BFD to free up any cached information, so we
2139 don't fill all of memory with symbol tables. */
2140 if (! bfd_free_cached_info (current))
2141 goto error_return;
2145 /* OK, now we have collected all the data, let's write them out. */
2146 ret = BFD_SEND (arch, write_armap,
2147 (arch, elength, map, orl_count, stridx));
2149 if (syms_max > 0)
2150 free (syms);
2151 if (map != NULL)
2152 free (map);
2153 if (first_name != NULL)
2154 bfd_release (arch, first_name);
2156 return ret;
2158 error_return:
2159 if (syms_max > 0)
2160 free (syms);
2161 if (map != NULL)
2162 free (map);
2163 if (first_name != NULL)
2164 bfd_release (arch, first_name);
2166 return FALSE;
2169 bfd_boolean
2170 bsd_write_armap (bfd *arch,
2171 unsigned int elength,
2172 struct orl *map,
2173 unsigned int orl_count,
2174 int stridx)
2176 int padit = stridx & 1;
2177 unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE;
2178 unsigned int stringsize = stridx + padit;
2179 /* Include 8 bytes to store ranlibsize and stringsize in output. */
2180 unsigned int mapsize = ranlibsize + stringsize + 8;
2181 file_ptr firstreal;
2182 bfd *current = arch->archive_head;
2183 bfd *last_elt = current; /* Last element arch seen. */
2184 bfd_byte temp[4];
2185 unsigned int count;
2186 struct ar_hdr hdr;
2187 struct stat statbuf;
2188 long uid, gid;
2190 firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG;
2192 stat (arch->filename, &statbuf);
2193 if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0)
2195 /* Remember the timestamp, to keep it holy. But fudge it a little. */
2196 bfd_ardata (arch)->armap_timestamp = (statbuf.st_mtime
2197 + ARMAP_TIME_OFFSET);
2198 uid = getuid();
2199 gid = getgid();
2201 else
2203 /* If deterministic, we use 0 as the timestamp in the map.
2204 Some linkers may require that the archive filesystem modification
2205 time is less than (or near to) the archive map timestamp. Those
2206 linkers should not be used with deterministic mode. (GNU ld and
2207 Gold do not have this restriction.) */
2208 bfd_ardata (arch)->armap_timestamp = 0;
2209 uid = 0;
2210 gid = 0;
2213 memset (&hdr, ' ', sizeof (struct ar_hdr));
2214 memcpy (hdr.ar_name, RANLIBMAG, strlen (RANLIBMAG));
2215 bfd_ardata (arch)->armap_datepos = (SARMAG
2216 + offsetof (struct ar_hdr, ar_date[0]));
2217 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
2218 bfd_ardata (arch)->armap_timestamp);
2219 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", uid);
2220 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", gid);
2221 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld", mapsize);
2222 memcpy (hdr.ar_fmag, ARFMAG, 2);
2223 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
2224 != sizeof (struct ar_hdr))
2225 return FALSE;
2226 H_PUT_32 (arch, ranlibsize, temp);
2227 if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp))
2228 return FALSE;
2230 for (count = 0; count < orl_count; count++)
2232 bfd_byte buf[BSD_SYMDEF_SIZE];
2234 if (map[count].u.abfd != last_elt)
2238 firstreal += arelt_size (current) + sizeof (struct ar_hdr);
2239 firstreal += firstreal % 2;
2240 current = current->archive_next;
2242 while (current != map[count].u.abfd);
2245 last_elt = current;
2246 H_PUT_32 (arch, map[count].namidx, buf);
2247 H_PUT_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE);
2248 if (bfd_bwrite (buf, BSD_SYMDEF_SIZE, arch)
2249 != BSD_SYMDEF_SIZE)
2250 return FALSE;
2253 /* Now write the strings themselves. */
2254 H_PUT_32 (arch, stringsize, temp);
2255 if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp))
2256 return FALSE;
2257 for (count = 0; count < orl_count; count++)
2259 size_t len = strlen (*map[count].name) + 1;
2261 if (bfd_bwrite (*map[count].name, len, arch) != len)
2262 return FALSE;
2265 /* The spec sez this should be a newline. But in order to be
2266 bug-compatible for sun's ar we use a null. */
2267 if (padit)
2269 if (bfd_bwrite ("", 1, arch) != 1)
2270 return FALSE;
2273 return TRUE;
2276 /* At the end of archive file handling, update the timestamp in the
2277 file, so the linker will accept it.
2279 Return TRUE if the timestamp was OK, or an unusual problem happened.
2280 Return FALSE if we updated the timestamp. */
2282 bfd_boolean
2283 _bfd_archive_bsd_update_armap_timestamp (bfd *arch)
2285 struct stat archstat;
2286 struct ar_hdr hdr;
2288 /* If creating deterministic archives, just leave the timestamp as-is. */
2289 if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) != 0)
2290 return TRUE;
2292 /* Flush writes, get last-write timestamp from file, and compare it
2293 to the timestamp IN the file. */
2294 bfd_flush (arch);
2295 if (bfd_stat (arch, &archstat) == -1)
2297 bfd_perror (_("Reading archive file mod timestamp"));
2299 /* Can't read mod time for some reason. */
2300 return TRUE;
2302 if (((long) archstat.st_mtime) <= bfd_ardata (arch)->armap_timestamp)
2303 /* OK by the linker's rules. */
2304 return TRUE;
2306 /* Update the timestamp. */
2307 bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET;
2309 /* Prepare an ASCII version suitable for writing. */
2310 memset (hdr.ar_date, ' ', sizeof (hdr.ar_date));
2311 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
2312 bfd_ardata (arch)->armap_timestamp);
2314 /* Write it into the file. */
2315 bfd_ardata (arch)->armap_datepos = (SARMAG
2316 + offsetof (struct ar_hdr, ar_date[0]));
2317 if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0
2318 || (bfd_bwrite (hdr.ar_date, sizeof (hdr.ar_date), arch)
2319 != sizeof (hdr.ar_date)))
2321 bfd_perror (_("Writing updated armap timestamp"));
2323 /* Some error while writing. */
2324 return TRUE;
2327 /* We updated the timestamp successfully. */
2328 return FALSE;
2331 /* A coff armap looks like :
2332 lARMAG
2333 struct ar_hdr with name = '/'
2334 number of symbols
2335 offset of file for symbol 0
2336 offset of file for symbol 1
2338 offset of file for symbol n-1
2339 symbol name 0
2340 symbol name 1
2342 symbol name n-1 */
2344 bfd_boolean
2345 coff_write_armap (bfd *arch,
2346 unsigned int elength,
2347 struct orl *map,
2348 unsigned int symbol_count,
2349 int stridx)
2351 /* The size of the ranlib is the number of exported symbols in the
2352 archive * the number of bytes in an int, + an int for the count. */
2353 unsigned int ranlibsize = (symbol_count * 4) + 4;
2354 unsigned int stringsize = stridx;
2355 unsigned int mapsize = stringsize + ranlibsize;
2356 unsigned int archive_member_file_ptr;
2357 bfd *current = arch->archive_head;
2358 unsigned int count;
2359 struct ar_hdr hdr;
2360 int padit = mapsize & 1;
2362 if (padit)
2363 mapsize++;
2365 /* Work out where the first object file will go in the archive. */
2366 archive_member_file_ptr = (mapsize
2367 + elength
2368 + sizeof (struct ar_hdr)
2369 + SARMAG);
2371 memset (&hdr, ' ', sizeof (struct ar_hdr));
2372 hdr.ar_name[0] = '/';
2373 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld",
2374 mapsize);
2375 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
2376 ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0
2377 ? time (NULL) : 0));
2378 /* This, at least, is what Intel coff sets the values to. */
2379 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
2380 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
2381 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
2382 memcpy (hdr.ar_fmag, ARFMAG, 2);
2384 /* Write the ar header for this item and the number of symbols. */
2385 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
2386 != sizeof (struct ar_hdr))
2387 return FALSE;
2389 if (!bfd_write_bigendian_4byte_int (arch, symbol_count))
2390 return FALSE;
2392 /* Two passes, first write the file offsets for each symbol -
2393 remembering that each offset is on a two byte boundary. */
2395 /* Write out the file offset for the file associated with each
2396 symbol, and remember to keep the offsets padded out. */
2398 current = arch->archive_head;
2399 count = 0;
2400 while (current != NULL && count < symbol_count)
2402 /* For each symbol which is used defined in this object, write
2403 out the object file's address in the archive. */
2405 while (count < symbol_count && map[count].u.abfd == current)
2407 if (!bfd_write_bigendian_4byte_int (arch, archive_member_file_ptr))
2408 return FALSE;
2409 count++;
2411 archive_member_file_ptr += sizeof (struct ar_hdr);
2412 if (! bfd_is_thin_archive (arch))
2414 /* Add size of this archive entry. */
2415 archive_member_file_ptr += arelt_size (current);
2416 /* Remember about the even alignment. */
2417 archive_member_file_ptr += archive_member_file_ptr % 2;
2419 current = current->archive_next;
2422 /* Now write the strings themselves. */
2423 for (count = 0; count < symbol_count; count++)
2425 size_t len = strlen (*map[count].name) + 1;
2427 if (bfd_bwrite (*map[count].name, len, arch) != len)
2428 return FALSE;
2431 /* The spec sez this should be a newline. But in order to be
2432 bug-compatible for arc960 we use a null. */
2433 if (padit)
2435 if (bfd_bwrite ("", 1, arch) != 1)
2436 return FALSE;
2439 return TRUE;