0,0 → 1,2755 |
/* BFD back-end for archive files (libraries). |
Copyright 1990-2013 Free Software Foundation, Inc. |
Written by Cygnus Support. Mostly Gumby Henkel-Wallace's fault. |
|
This file is part of BFD, the Binary File Descriptor library. |
|
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 3 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
|
/* |
@setfilename archive-info |
SECTION |
Archives |
|
DESCRIPTION |
An archive (or library) is just another BFD. It has a symbol |
table, although there's not much a user program will do with it. |
|
The big difference between an archive BFD and an ordinary BFD |
is that the archive doesn't have sections. Instead it has a |
chain of BFDs that are considered its contents. These BFDs can |
be manipulated like any other. The BFDs contained in an |
archive opened for reading will all be opened for reading. You |
may put either input or output BFDs into an archive opened for |
output; they will be handled correctly when the archive is closed. |
|
Use <<bfd_openr_next_archived_file>> to step through |
the contents of an archive opened for input. You don't |
have to read the entire archive if you don't want |
to! Read it until you find what you want. |
|
A BFD returned by <<bfd_openr_next_archived_file>> can be |
closed manually with <<bfd_close>>. If you do not close it, |
then a second iteration through the members of an archive may |
return the same BFD. If you close the archive BFD, then all |
the member BFDs will automatically be closed as well. |
|
Archive contents of output BFDs are chained through the |
<<archive_next>> pointer in a BFD. The first one is findable |
through the <<archive_head>> slot of the archive. Set it with |
<<bfd_set_archive_head>> (q.v.). A given BFD may be in only |
one open output archive at a time. |
|
As expected, the BFD archive code is more general than the |
archive code of any given environment. BFD archives may |
contain files of different formats (e.g., a.out and coff) and |
even different architectures. You may even place archives |
recursively into archives! |
|
This can cause unexpected confusion, since some archive |
formats are more expressive than others. For instance, Intel |
COFF archives can preserve long filenames; SunOS a.out archives |
cannot. If you move a file from the first to the second |
format and back again, the filename may be truncated. |
Likewise, different a.out environments have different |
conventions as to how they truncate filenames, whether they |
preserve directory names in filenames, etc. When |
interoperating with native tools, be sure your files are |
homogeneous. |
|
Beware: most of these formats do not react well to the |
presence of spaces in filenames. We do the best we can, but |
can't always handle this case due to restrictions in the format of |
archives. Many Unix utilities are braindead in regards to |
spaces and such in filenames anyway, so this shouldn't be much |
of a restriction. |
|
Archives are supported in BFD in <<archive.c>>. |
|
SUBSECTION |
Archive functions |
*/ |
|
/* Assumes: |
o - all archive elements start on an even boundary, newline padded; |
o - all arch headers are char *; |
o - all arch headers are the same size (across architectures). |
*/ |
|
/* Some formats provide a way to cram a long filename into the short |
(16 chars) space provided by a BSD archive. The trick is: make a |
special "file" in the front of the archive, sort of like the SYMDEF |
entry. If the filename is too long to fit, put it in the extended |
name table, and use its index as the filename. To prevent |
confusion prepend the index with a space. This means you can't |
have filenames that start with a space, but then again, many Unix |
utilities can't handle that anyway. |
|
This scheme unfortunately requires that you stand on your head in |
order to write an archive since you need to put a magic file at the |
front, and need to touch every entry to do so. C'est la vie. |
|
We support two variants of this idea: |
The SVR4 format (extended name table is named "//"), |
and an extended pseudo-BSD variant (extended name table is named |
"ARFILENAMES/"). The origin of the latter format is uncertain. |
|
BSD 4.4 uses a third scheme: It writes a long filename |
directly after the header. This allows 'ar q' to work. |
*/ |
|
/* Summary of archive member names: |
|
Symbol table (must be first): |
"__.SYMDEF " - Symbol table, Berkeley style, produced by ranlib. |
"/ " - Symbol table, system 5 style. |
|
Long name table (must be before regular file members): |
"// " - Long name table, System 5 R4 style. |
"ARFILENAMES/ " - Long name table, non-standard extended BSD (not BSD 4.4). |
|
Regular file members with short names: |
"filename.o/ " - Regular file, System 5 style (embedded spaces ok). |
"filename.o " - Regular file, Berkeley style (no embedded spaces). |
|
Regular files with long names (or embedded spaces, for BSD variants): |
"/18 " - SVR4 style, name at offset 18 in name table. |
"#1/23 " - Long name (or embedded spaces) 23 characters long, |
BSD 4.4 style, full name follows header. |
" 18 " - Long name 18 characters long, extended pseudo-BSD. |
*/ |
|
#include "sysdep.h" |
#include "bfd.h" |
#include "libiberty.h" |
#include "libbfd.h" |
#include "aout/ar.h" |
#include "aout/ranlib.h" |
#include "safe-ctype.h" |
#include "hashtab.h" |
#include "filenames.h" |
|
#ifndef errno |
extern int errno; |
#endif |
|
/* We keep a cache of archive filepointers to archive elements to |
speed up searching the archive by filepos. We only add an entry to |
the cache when we actually read one. We also don't sort the cache; |
it's generally short enough to search linearly. |
Note that the pointers here point to the front of the ar_hdr, not |
to the front of the contents! */ |
struct ar_cache |
{ |
file_ptr ptr; |
bfd *arbfd; |
}; |
|
#define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char) |
#define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen) |
|
#define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data)) |
#define arch_hdr(bfd) ((struct ar_hdr *) arch_eltdata (bfd)->arch_header) |
|
/* True iff NAME designated a BSD 4.4 extended name. */ |
|
#define is_bsd44_extended_name(NAME) \ |
(NAME[0] == '#' && NAME[1] == '1' && NAME[2] == '/' && ISDIGIT (NAME[3])) |
|
void |
_bfd_ar_spacepad (char *p, size_t n, const char *fmt, long val) |
{ |
static char buf[20]; |
size_t len; |
|
snprintf (buf, sizeof (buf), fmt, val); |
len = strlen (buf); |
if (len < n) |
{ |
memcpy (p, buf, len); |
memset (p + len, ' ', n - len); |
} |
else |
memcpy (p, buf, n); |
} |
|
bfd_boolean |
_bfd_ar_sizepad (char *p, size_t n, bfd_size_type size) |
{ |
static char buf[21]; |
size_t len; |
|
snprintf (buf, sizeof (buf), "%-10" BFD_VMA_FMT "u", size); |
len = strlen (buf); |
if (len > n) |
{ |
bfd_set_error (bfd_error_file_too_big); |
return FALSE; |
} |
if (len < n) |
{ |
memcpy (p, buf, len); |
memset (p + len, ' ', n - len); |
} |
else |
memcpy (p, buf, n); |
return TRUE; |
} |
|
bfd_boolean |
_bfd_generic_mkarchive (bfd *abfd) |
{ |
bfd_size_type amt = sizeof (struct artdata); |
|
abfd->tdata.aout_ar_data = (struct artdata *) bfd_zalloc (abfd, amt); |
if (bfd_ardata (abfd) == NULL) |
return FALSE; |
|
/* Already cleared by bfd_zalloc above. |
bfd_ardata (abfd)->cache = NULL; |
bfd_ardata (abfd)->archive_head = NULL; |
bfd_ardata (abfd)->symdefs = NULL; |
bfd_ardata (abfd)->extended_names = NULL; |
bfd_ardata (abfd)->extended_names_size = 0; |
bfd_ardata (abfd)->tdata = NULL; */ |
|
return TRUE; |
} |
|
/* |
FUNCTION |
bfd_get_next_mapent |
|
SYNOPSIS |
symindex bfd_get_next_mapent |
(bfd *abfd, symindex previous, carsym **sym); |
|
DESCRIPTION |
Step through archive @var{abfd}'s symbol table (if it |
has one). Successively update @var{sym} with the next symbol's |
information, returning that symbol's (internal) index into the |
symbol table. |
|
Supply <<BFD_NO_MORE_SYMBOLS>> as the @var{previous} entry to get |
the first one; returns <<BFD_NO_MORE_SYMBOLS>> when you've already |
got the last one. |
|
A <<carsym>> is a canonical archive symbol. The only |
user-visible element is its name, a null-terminated string. |
*/ |
|
symindex |
bfd_get_next_mapent (bfd *abfd, symindex prev, carsym **entry) |
{ |
if (!bfd_has_map (abfd)) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return BFD_NO_MORE_SYMBOLS; |
} |
|
if (prev == BFD_NO_MORE_SYMBOLS) |
prev = 0; |
else |
++prev; |
if (prev >= bfd_ardata (abfd)->symdef_count) |
return BFD_NO_MORE_SYMBOLS; |
|
*entry = (bfd_ardata (abfd)->symdefs + prev); |
return prev; |
} |
|
/* To be called by backends only. */ |
|
bfd * |
_bfd_create_empty_archive_element_shell (bfd *obfd) |
{ |
return _bfd_new_bfd_contained_in (obfd); |
} |
|
/* |
FUNCTION |
bfd_set_archive_head |
|
SYNOPSIS |
bfd_boolean bfd_set_archive_head (bfd *output, bfd *new_head); |
|
DESCRIPTION |
Set the head of the chain of |
BFDs contained in the archive @var{output} to @var{new_head}. |
*/ |
|
bfd_boolean |
bfd_set_archive_head (bfd *output_archive, bfd *new_head) |
{ |
output_archive->archive_head = new_head; |
return TRUE; |
} |
|
bfd * |
_bfd_look_for_bfd_in_cache (bfd *arch_bfd, file_ptr filepos) |
{ |
htab_t hash_table = bfd_ardata (arch_bfd)->cache; |
struct ar_cache m; |
|
m.ptr = filepos; |
|
if (hash_table) |
{ |
struct ar_cache *entry = (struct ar_cache *) htab_find (hash_table, &m); |
if (!entry) |
return NULL; |
else |
return entry->arbfd; |
} |
else |
return NULL; |
} |
|
static hashval_t |
hash_file_ptr (const void * p) |
{ |
return (hashval_t) (((struct ar_cache *) p)->ptr); |
} |
|
/* Returns non-zero if P1 and P2 are equal. */ |
|
static int |
eq_file_ptr (const void * p1, const void * p2) |
{ |
struct ar_cache *arc1 = (struct ar_cache *) p1; |
struct ar_cache *arc2 = (struct ar_cache *) p2; |
return arc1->ptr == arc2->ptr; |
} |
|
/* The calloc function doesn't always take size_t (e.g. on VMS) |
so wrap it to avoid a compile time warning. */ |
|
static void * |
_bfd_calloc_wrapper (size_t a, size_t b) |
{ |
return calloc (a, b); |
} |
|
/* Kind of stupid to call cons for each one, but we don't do too many. */ |
|
bfd_boolean |
_bfd_add_bfd_to_archive_cache (bfd *arch_bfd, file_ptr filepos, bfd *new_elt) |
{ |
struct ar_cache *cache; |
htab_t hash_table = bfd_ardata (arch_bfd)->cache; |
|
/* If the hash table hasn't been created, create it. */ |
if (hash_table == NULL) |
{ |
hash_table = htab_create_alloc (16, hash_file_ptr, eq_file_ptr, |
NULL, _bfd_calloc_wrapper, free); |
if (hash_table == NULL) |
return FALSE; |
bfd_ardata (arch_bfd)->cache = hash_table; |
} |
|
/* Insert new_elt into the hash table by filepos. */ |
cache = (struct ar_cache *) bfd_zalloc (arch_bfd, sizeof (struct ar_cache)); |
cache->ptr = filepos; |
cache->arbfd = new_elt; |
*htab_find_slot (hash_table, (const void *) cache, INSERT) = cache; |
|
/* Provide a means of accessing this from child. */ |
arch_eltdata (new_elt)->parent_cache = hash_table; |
arch_eltdata (new_elt)->key = filepos; |
|
return TRUE; |
} |
|
static bfd * |
_bfd_find_nested_archive (bfd *arch_bfd, const char *filename) |
{ |
bfd *abfd; |
const char *target; |
|
/* PR 15140: Don't allow a nested archive pointing to itself. */ |
if (filename_cmp (filename, arch_bfd->filename) == 0) |
{ |
bfd_set_error (bfd_error_malformed_archive); |
return NULL; |
} |
|
for (abfd = arch_bfd->nested_archives; |
abfd != NULL; |
abfd = abfd->archive_next) |
{ |
if (filename_cmp (filename, abfd->filename) == 0) |
return abfd; |
} |
target = NULL; |
if (!arch_bfd->target_defaulted) |
target = arch_bfd->xvec->name; |
abfd = bfd_openr (filename, target); |
if (abfd) |
{ |
abfd->archive_next = arch_bfd->nested_archives; |
arch_bfd->nested_archives = abfd; |
} |
return abfd; |
} |
|
/* The name begins with space. Hence the rest of the name is an index into |
the string table. */ |
|
static char * |
get_extended_arelt_filename (bfd *arch, const char *name, file_ptr *originp) |
{ |
unsigned long table_index = 0; |
const char *endp; |
|
/* Should extract string so that I can guarantee not to overflow into |
the next region, but I'm too lazy. */ |
errno = 0; |
/* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */ |
table_index = strtol (name + 1, (char **) &endp, 10); |
if (errno != 0 || table_index >= bfd_ardata (arch)->extended_names_size) |
{ |
bfd_set_error (bfd_error_malformed_archive); |
return NULL; |
} |
/* In a thin archive, a member of an archive-within-an-archive |
will have the offset in the inner archive encoded here. */ |
if (bfd_is_thin_archive (arch) && endp != NULL && *endp == ':') |
{ |
file_ptr origin = strtol (endp + 1, NULL, 10); |
|
if (errno != 0) |
{ |
bfd_set_error (bfd_error_malformed_archive); |
return NULL; |
} |
*originp = origin; |
} |
else |
*originp = 0; |
|
return bfd_ardata (arch)->extended_names + table_index; |
} |
|
/* This functions reads an arch header and returns an areltdata pointer, or |
NULL on error. |
|
Presumes the file pointer is already in the right place (ie pointing |
to the ar_hdr in the file). Moves the file pointer; on success it |
should be pointing to the front of the file contents; on failure it |
could have been moved arbitrarily. */ |
|
void * |
_bfd_generic_read_ar_hdr (bfd *abfd) |
{ |
return _bfd_generic_read_ar_hdr_mag (abfd, NULL); |
} |
|
/* Alpha ECOFF uses an optional different ARFMAG value, so we have a |
variant of _bfd_generic_read_ar_hdr which accepts a magic string. */ |
|
void * |
_bfd_generic_read_ar_hdr_mag (bfd *abfd, const char *mag) |
{ |
struct ar_hdr hdr; |
char *hdrp = (char *) &hdr; |
bfd_size_type parsed_size; |
struct areltdata *ared; |
char *filename = NULL; |
bfd_size_type namelen = 0; |
bfd_size_type allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr); |
char *allocptr = 0; |
file_ptr origin = 0; |
unsigned int extra_size = 0; |
char fmag_save; |
int scan; |
|
if (bfd_bread (hdrp, sizeof (struct ar_hdr), abfd) != sizeof (struct ar_hdr)) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_no_more_archived_files); |
return NULL; |
} |
if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0 |
&& (mag == NULL |
|| strncmp (hdr.ar_fmag, mag, 2) != 0)) |
{ |
bfd_set_error (bfd_error_malformed_archive); |
return NULL; |
} |
|
errno = 0; |
fmag_save = hdr.ar_fmag[0]; |
hdr.ar_fmag[0] = 0; |
scan = sscanf (hdr.ar_size, "%" BFD_VMA_FMT "u", &parsed_size); |
hdr.ar_fmag[0] = fmag_save; |
if (scan != 1) |
{ |
bfd_set_error (bfd_error_malformed_archive); |
return NULL; |
} |
|
/* Extract the filename from the archive - there are two ways to |
specify an extended name table, either the first char of the |
name is a space, or it's a slash. */ |
if ((hdr.ar_name[0] == '/' |
|| (hdr.ar_name[0] == ' ' |
&& memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL)) |
&& bfd_ardata (abfd)->extended_names != NULL) |
{ |
filename = get_extended_arelt_filename (abfd, hdr.ar_name, &origin); |
if (filename == NULL) |
return NULL; |
} |
/* BSD4.4-style long filename. */ |
else if (is_bsd44_extended_name (hdr.ar_name)) |
{ |
/* BSD-4.4 extended name */ |
namelen = atoi (&hdr.ar_name[3]); |
allocsize += namelen + 1; |
parsed_size -= namelen; |
extra_size = namelen; |
|
allocptr = (char *) bfd_zmalloc (allocsize); |
if (allocptr == NULL) |
return NULL; |
filename = (allocptr |
+ sizeof (struct areltdata) |
+ sizeof (struct ar_hdr)); |
if (bfd_bread (filename, namelen, abfd) != namelen) |
{ |
free (allocptr); |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_no_more_archived_files); |
return NULL; |
} |
filename[namelen] = '\0'; |
} |
else |
{ |
/* We judge the end of the name by looking for '/' or ' '. |
Note: The SYSV format (terminated by '/') allows embedded |
spaces, so only look for ' ' if we don't find '/'. */ |
|
char *e; |
e = (char *) memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd)); |
if (e == NULL) |
{ |
e = (char *) memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)); |
if (e == NULL) |
e = (char *) memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd)); |
} |
|
if (e != NULL) |
namelen = e - hdr.ar_name; |
else |
{ |
/* If we didn't find a termination character, then the name |
must be the entire field. */ |
namelen = ar_maxnamelen (abfd); |
} |
|
allocsize += namelen + 1; |
} |
|
if (!allocptr) |
{ |
allocptr = (char *) bfd_zmalloc (allocsize); |
if (allocptr == NULL) |
return NULL; |
} |
|
ared = (struct areltdata *) allocptr; |
|
ared->arch_header = allocptr + sizeof (struct areltdata); |
memcpy (ared->arch_header, &hdr, sizeof (struct ar_hdr)); |
ared->parsed_size = parsed_size; |
ared->extra_size = extra_size; |
ared->origin = origin; |
|
if (filename != NULL) |
ared->filename = filename; |
else |
{ |
ared->filename = allocptr + (sizeof (struct areltdata) + |
sizeof (struct ar_hdr)); |
if (namelen) |
memcpy (ared->filename, hdr.ar_name, namelen); |
ared->filename[namelen] = '\0'; |
} |
|
return ared; |
} |
|
/* Append the relative pathname for a member of the thin archive |
to the pathname of the directory containing the archive. */ |
|
char * |
_bfd_append_relative_path (bfd *arch, char *elt_name) |
{ |
const char *arch_name = arch->filename; |
const char *base_name = lbasename (arch_name); |
size_t prefix_len; |
char *filename; |
|
if (base_name == arch_name) |
return elt_name; |
|
prefix_len = base_name - arch_name; |
filename = (char *) bfd_alloc (arch, prefix_len + strlen (elt_name) + 1); |
if (filename == NULL) |
return NULL; |
|
strncpy (filename, arch_name, prefix_len); |
strcpy (filename + prefix_len, elt_name); |
return filename; |
} |
|
/* This is an internal function; it's mainly used when indexing |
through the archive symbol table, but also used to get the next |
element, since it handles the bookkeeping so nicely for us. */ |
|
bfd * |
_bfd_get_elt_at_filepos (bfd *archive, file_ptr filepos) |
{ |
struct areltdata *new_areldata; |
bfd *n_nfd; |
char *filename; |
|
n_nfd = _bfd_look_for_bfd_in_cache (archive, filepos); |
if (n_nfd) |
return n_nfd; |
|
if (0 > bfd_seek (archive, filepos, SEEK_SET)) |
return NULL; |
|
if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL) |
return NULL; |
|
filename = new_areldata->filename; |
|
if (bfd_is_thin_archive (archive)) |
{ |
const char *target; |
|
/* This is a proxy entry for an external file. */ |
if (! IS_ABSOLUTE_PATH (filename)) |
{ |
filename = _bfd_append_relative_path (archive, filename); |
if (filename == NULL) |
{ |
free (new_areldata); |
return NULL; |
} |
} |
|
if (new_areldata->origin > 0) |
{ |
/* This proxy entry refers to an element of a nested archive. |
Locate the member of that archive and return a bfd for it. */ |
bfd *ext_arch = _bfd_find_nested_archive (archive, filename); |
|
if (ext_arch == NULL |
|| ! bfd_check_format (ext_arch, bfd_archive)) |
{ |
free (new_areldata); |
return NULL; |
} |
n_nfd = _bfd_get_elt_at_filepos (ext_arch, new_areldata->origin); |
if (n_nfd == NULL) |
{ |
free (new_areldata); |
return NULL; |
} |
n_nfd->proxy_origin = bfd_tell (archive); |
return n_nfd; |
} |
/* It's not an element of a nested archive; |
open the external file as a bfd. */ |
target = NULL; |
if (!archive->target_defaulted) |
target = archive->xvec->name; |
n_nfd = bfd_openr (filename, target); |
if (n_nfd == NULL) |
bfd_set_error (bfd_error_malformed_archive); |
} |
else |
{ |
n_nfd = _bfd_create_empty_archive_element_shell (archive); |
} |
|
if (n_nfd == NULL) |
{ |
free (new_areldata); |
return NULL; |
} |
|
n_nfd->proxy_origin = bfd_tell (archive); |
|
if (bfd_is_thin_archive (archive)) |
{ |
n_nfd->origin = 0; |
} |
else |
{ |
n_nfd->origin = n_nfd->proxy_origin; |
n_nfd->filename = filename; |
} |
|
n_nfd->arelt_data = new_areldata; |
|
/* Copy BFD_COMPRESS and BFD_DECOMPRESS flags. */ |
n_nfd->flags |= archive->flags & (BFD_COMPRESS | BFD_DECOMPRESS); |
|
if (_bfd_add_bfd_to_archive_cache (archive, filepos, n_nfd)) |
return n_nfd; |
|
free (new_areldata); |
n_nfd->arelt_data = NULL; |
return NULL; |
} |
|
/* Return the BFD which is referenced by the symbol in ABFD indexed by |
SYM_INDEX. SYM_INDEX should have been returned by bfd_get_next_mapent. */ |
|
bfd * |
_bfd_generic_get_elt_at_index (bfd *abfd, symindex sym_index) |
{ |
carsym *entry; |
|
entry = bfd_ardata (abfd)->symdefs + sym_index; |
return _bfd_get_elt_at_filepos (abfd, entry->file_offset); |
} |
|
/* |
FUNCTION |
bfd_openr_next_archived_file |
|
SYNOPSIS |
bfd *bfd_openr_next_archived_file (bfd *archive, bfd *previous); |
|
DESCRIPTION |
Provided a BFD, @var{archive}, containing an archive and NULL, open |
an input BFD on the first contained element and returns that. |
Subsequent calls should pass |
the archive and the previous return value to return a created |
BFD to the next contained element. NULL is returned when there |
are no more. |
*/ |
|
bfd * |
bfd_openr_next_archived_file (bfd *archive, bfd *last_file) |
{ |
if ((bfd_get_format (archive) != bfd_archive) |
|| (archive->direction == write_direction)) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return NULL; |
} |
|
return BFD_SEND (archive, |
openr_next_archived_file, (archive, last_file)); |
} |
|
bfd * |
bfd_generic_openr_next_archived_file (bfd *archive, bfd *last_file) |
{ |
file_ptr filestart; |
|
if (!last_file) |
filestart = bfd_ardata (archive)->first_file_filepos; |
else |
{ |
bfd_size_type size = arelt_size (last_file); |
|
filestart = last_file->proxy_origin; |
if (! bfd_is_thin_archive (archive)) |
filestart += size; |
/* Pad to an even boundary... |
Note that last_file->origin can be odd in the case of |
BSD-4.4-style element with a long odd size. */ |
filestart += filestart % 2; |
} |
|
return _bfd_get_elt_at_filepos (archive, filestart); |
} |
|
const bfd_target * |
bfd_generic_archive_p (bfd *abfd) |
{ |
struct artdata *tdata_hold; |
char armag[SARMAG + 1]; |
bfd_size_type amt; |
|
if (bfd_bread (armag, SARMAG, abfd) != SARMAG) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_wrong_format); |
return NULL; |
} |
|
bfd_is_thin_archive (abfd) = (strncmp (armag, ARMAGT, SARMAG) == 0); |
|
if (strncmp (armag, ARMAG, SARMAG) != 0 |
&& strncmp (armag, ARMAGB, SARMAG) != 0 |
&& ! bfd_is_thin_archive (abfd)) |
return NULL; |
|
tdata_hold = bfd_ardata (abfd); |
|
amt = sizeof (struct artdata); |
bfd_ardata (abfd) = (struct artdata *) bfd_zalloc (abfd, amt); |
if (bfd_ardata (abfd) == NULL) |
{ |
bfd_ardata (abfd) = tdata_hold; |
return NULL; |
} |
|
bfd_ardata (abfd)->first_file_filepos = SARMAG; |
/* Cleared by bfd_zalloc above. |
bfd_ardata (abfd)->cache = NULL; |
bfd_ardata (abfd)->archive_head = NULL; |
bfd_ardata (abfd)->symdefs = NULL; |
bfd_ardata (abfd)->extended_names = NULL; |
bfd_ardata (abfd)->extended_names_size = 0; |
bfd_ardata (abfd)->tdata = NULL; */ |
|
if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd)) |
|| !BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd))) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_wrong_format); |
bfd_release (abfd, bfd_ardata (abfd)); |
bfd_ardata (abfd) = tdata_hold; |
return NULL; |
} |
|
if (abfd->target_defaulted && bfd_has_map (abfd)) |
{ |
bfd *first; |
|
/* This archive has a map, so we may presume that the contents |
are object files. Make sure that if the first file in the |
archive can be recognized as an object file, it is for this |
target. If not, assume that this is the wrong format. If |
the first file is not an object file, somebody is doing |
something weird, and we permit it so that ar -t will work. |
|
This is done because any normal format will recognize any |
normal archive, regardless of the format of the object files. |
We do accept an empty archive. */ |
|
first = bfd_openr_next_archived_file (abfd, NULL); |
if (first != NULL) |
{ |
first->target_defaulted = FALSE; |
if (bfd_check_format (first, bfd_object) |
&& first->xvec != abfd->xvec) |
bfd_set_error (bfd_error_wrong_object_format); |
/* And we ought to close `first' here too. */ |
} |
} |
|
return abfd->xvec; |
} |
|
/* Some constants for a 32 bit BSD archive structure. We do not |
support 64 bit archives presently; so far as I know, none actually |
exist. Supporting them would require changing these constants, and |
changing some H_GET_32 to H_GET_64. */ |
|
/* The size of an external symdef structure. */ |
#define BSD_SYMDEF_SIZE 8 |
|
/* The offset from the start of a symdef structure to the file offset. */ |
#define BSD_SYMDEF_OFFSET_SIZE 4 |
|
/* The size of the symdef count. */ |
#define BSD_SYMDEF_COUNT_SIZE 4 |
|
/* The size of the string count. */ |
#define BSD_STRING_COUNT_SIZE 4 |
|
/* Read a BSD-style archive symbol table. Returns FALSE on error, |
TRUE otherwise. */ |
|
static bfd_boolean |
do_slurp_bsd_armap (bfd *abfd) |
{ |
struct areltdata *mapdata; |
unsigned int counter; |
bfd_byte *raw_armap, *rbase; |
struct artdata *ardata = bfd_ardata (abfd); |
char *stringbase; |
bfd_size_type parsed_size, amt; |
carsym *set; |
|
mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
if (mapdata == NULL) |
return FALSE; |
parsed_size = mapdata->parsed_size; |
free (mapdata); |
|
raw_armap = (bfd_byte *) bfd_zalloc (abfd, parsed_size); |
if (raw_armap == NULL) |
return FALSE; |
|
if (bfd_bread (raw_armap, parsed_size, abfd) != parsed_size) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_malformed_archive); |
byebye: |
bfd_release (abfd, raw_armap); |
return FALSE; |
} |
|
ardata->symdef_count = H_GET_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE; |
|
if (ardata->symdef_count * BSD_SYMDEF_SIZE > |
parsed_size - BSD_SYMDEF_COUNT_SIZE) |
{ |
/* Probably we're using the wrong byte ordering. */ |
bfd_set_error (bfd_error_wrong_format); |
goto byebye; |
} |
|
ardata->cache = 0; |
rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE; |
stringbase = ((char *) rbase |
+ ardata->symdef_count * BSD_SYMDEF_SIZE |
+ BSD_STRING_COUNT_SIZE); |
amt = ardata->symdef_count * sizeof (carsym); |
ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt); |
if (!ardata->symdefs) |
return FALSE; |
|
for (counter = 0, set = ardata->symdefs; |
counter < ardata->symdef_count; |
counter++, set++, rbase += BSD_SYMDEF_SIZE) |
{ |
set->name = H_GET_32 (abfd, rbase) + stringbase; |
set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); |
} |
|
ardata->first_file_filepos = bfd_tell (abfd); |
/* Pad to an even boundary if you have to. */ |
ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
/* FIXME, we should provide some way to free raw_ardata when |
we are done using the strings from it. For now, it seems |
to be allocated on an objalloc anyway... */ |
bfd_has_map (abfd) = TRUE; |
return TRUE; |
} |
|
/* Read a COFF archive symbol table. Returns FALSE on error, TRUE |
otherwise. */ |
|
static bfd_boolean |
do_slurp_coff_armap (bfd *abfd) |
{ |
struct areltdata *mapdata; |
int *raw_armap, *rawptr; |
struct artdata *ardata = bfd_ardata (abfd); |
char *stringbase; |
bfd_size_type stringsize; |
bfd_size_type parsed_size; |
carsym *carsyms; |
bfd_size_type nsymz; /* Number of symbols in armap. */ |
bfd_vma (*swap) (const void *); |
char int_buf[sizeof (long)]; |
bfd_size_type carsym_size, ptrsize; |
unsigned int i; |
|
mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
if (mapdata == NULL) |
return FALSE; |
parsed_size = mapdata->parsed_size; |
free (mapdata); |
|
if (bfd_bread (int_buf, 4, abfd) != 4) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_malformed_archive); |
return FALSE; |
} |
/* It seems that all numeric information in a coff archive is always |
in big endian format, nomatter the host or target. */ |
swap = bfd_getb32; |
nsymz = bfd_getb32 (int_buf); |
stringsize = parsed_size - (4 * nsymz) - 4; |
|
/* ... except that some archive formats are broken, and it may be our |
fault - the i960 little endian coff sometimes has big and sometimes |
little, because our tools changed. Here's a horrible hack to clean |
up the crap. */ |
|
if (stringsize > 0xfffff |
&& bfd_get_arch (abfd) == bfd_arch_i960 |
&& bfd_get_flavour (abfd) == bfd_target_coff_flavour) |
{ |
/* This looks dangerous, let's do it the other way around. */ |
nsymz = bfd_getl32 (int_buf); |
stringsize = parsed_size - (4 * nsymz) - 4; |
swap = bfd_getl32; |
} |
|
/* The coff armap must be read sequentially. So we construct a |
bsd-style one in core all at once, for simplicity. */ |
|
if (nsymz > ~ (bfd_size_type) 0 / sizeof (carsym)) |
return FALSE; |
|
carsym_size = (nsymz * sizeof (carsym)); |
ptrsize = (4 * nsymz); |
|
if (carsym_size + stringsize + 1 <= carsym_size) |
return FALSE; |
|
ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, |
carsym_size + stringsize + 1); |
if (ardata->symdefs == NULL) |
return FALSE; |
carsyms = ardata->symdefs; |
stringbase = ((char *) ardata->symdefs) + carsym_size; |
|
/* Allocate and read in the raw offsets. */ |
raw_armap = (int *) bfd_alloc (abfd, ptrsize); |
if (raw_armap == NULL) |
goto release_symdefs; |
if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize |
|| (bfd_bread (stringbase, stringsize, abfd) != stringsize)) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_malformed_archive); |
goto release_raw_armap; |
} |
|
/* OK, build the carsyms. */ |
for (i = 0; i < nsymz; i++) |
{ |
rawptr = raw_armap + i; |
carsyms->file_offset = swap ((bfd_byte *) rawptr); |
carsyms->name = stringbase; |
stringbase += strlen (stringbase) + 1; |
carsyms++; |
} |
*stringbase = 0; |
|
ardata->symdef_count = nsymz; |
ardata->first_file_filepos = bfd_tell (abfd); |
/* Pad to an even boundary if you have to. */ |
ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
|
bfd_has_map (abfd) = TRUE; |
bfd_release (abfd, raw_armap); |
|
/* Check for a second archive header (as used by PE). */ |
{ |
struct areltdata *tmp; |
|
bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET); |
tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
if (tmp != NULL) |
{ |
if (tmp->arch_header[0] == '/' |
&& tmp->arch_header[1] == ' ') |
{ |
ardata->first_file_filepos += |
(tmp->parsed_size + sizeof (struct ar_hdr) + 1) & ~(unsigned) 1; |
} |
free (tmp); |
} |
} |
|
return TRUE; |
|
release_raw_armap: |
bfd_release (abfd, raw_armap); |
release_symdefs: |
bfd_release (abfd, (ardata)->symdefs); |
return FALSE; |
} |
|
/* This routine can handle either coff-style or bsd-style armaps |
(archive symbol table). Returns FALSE on error, TRUE otherwise */ |
|
bfd_boolean |
bfd_slurp_armap (bfd *abfd) |
{ |
char nextname[17]; |
int i = bfd_bread (nextname, 16, abfd); |
|
if (i == 0) |
return TRUE; |
if (i != 16) |
return FALSE; |
|
if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
return FALSE; |
|
if (CONST_STRNEQ (nextname, "__.SYMDEF ") |
|| CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */ |
return do_slurp_bsd_armap (abfd); |
else if (CONST_STRNEQ (nextname, "/ ")) |
return do_slurp_coff_armap (abfd); |
else if (CONST_STRNEQ (nextname, "/SYM64/ ")) |
{ |
/* 64bit ELF (Irix 6) archive. */ |
#ifdef BFD64 |
extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *); |
return bfd_elf64_archive_slurp_armap (abfd); |
#else |
bfd_set_error (bfd_error_wrong_format); |
return FALSE; |
#endif |
} |
else if (CONST_STRNEQ (nextname, "#1/20 ")) |
{ |
/* Mach-O has a special name for armap when the map is sorted by name. |
However because this name has a space it is slightly more difficult |
to check it. */ |
struct ar_hdr hdr; |
char extname[21]; |
|
if (bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr)) |
return FALSE; |
/* Read the extended name. We know its length. */ |
if (bfd_bread (extname, 20, abfd) != 20) |
return FALSE; |
if (bfd_seek (abfd, -(file_ptr) (sizeof (hdr) + 20), SEEK_CUR) != 0) |
return FALSE; |
if (CONST_STRNEQ (extname, "__.SYMDEF SORTED") |
|| CONST_STRNEQ (extname, "__.SYMDEF")) |
return do_slurp_bsd_armap (abfd); |
} |
|
bfd_has_map (abfd) = FALSE; |
return TRUE; |
} |
|
/* Returns FALSE on error, TRUE otherwise. */ |
/* Flavor 2 of a bsd armap, similar to bfd_slurp_bsd_armap except the |
header is in a slightly different order and the map name is '/'. |
This flavour is used by hp300hpux. */ |
|
#define HPUX_SYMDEF_COUNT_SIZE 2 |
|
bfd_boolean |
bfd_slurp_bsd_armap_f2 (bfd *abfd) |
{ |
struct areltdata *mapdata; |
char nextname[17]; |
unsigned int counter; |
bfd_byte *raw_armap, *rbase; |
struct artdata *ardata = bfd_ardata (abfd); |
char *stringbase; |
unsigned int stringsize; |
unsigned int left; |
bfd_size_type amt; |
carsym *set; |
int i = bfd_bread (nextname, 16, abfd); |
|
if (i == 0) |
return TRUE; |
if (i != 16) |
return FALSE; |
|
/* The archive has at least 16 bytes in it. */ |
if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
return FALSE; |
|
if (CONST_STRNEQ (nextname, "__.SYMDEF ") |
|| CONST_STRNEQ (nextname, "__.SYMDEF/ ")) /* Old Linux archives. */ |
return do_slurp_bsd_armap (abfd); |
|
if (! CONST_STRNEQ (nextname, "/ ")) |
{ |
bfd_has_map (abfd) = FALSE; |
return TRUE; |
} |
|
mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
if (mapdata == NULL) |
return FALSE; |
|
if (mapdata->parsed_size < HPUX_SYMDEF_COUNT_SIZE + BSD_STRING_COUNT_SIZE) |
{ |
free (mapdata); |
wrong_format: |
bfd_set_error (bfd_error_wrong_format); |
byebye: |
return FALSE; |
} |
left = mapdata->parsed_size - HPUX_SYMDEF_COUNT_SIZE - BSD_STRING_COUNT_SIZE; |
|
amt = mapdata->parsed_size; |
free (mapdata); |
|
raw_armap = (bfd_byte *) bfd_zalloc (abfd, amt); |
if (raw_armap == NULL) |
goto byebye; |
|
if (bfd_bread (raw_armap, amt, abfd) != amt) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_malformed_archive); |
goto byebye; |
} |
|
ardata->symdef_count = H_GET_16 (abfd, raw_armap); |
|
ardata->cache = 0; |
|
stringsize = H_GET_32 (abfd, raw_armap + HPUX_SYMDEF_COUNT_SIZE); |
if (stringsize > left) |
goto wrong_format; |
left -= stringsize; |
|
/* Skip sym count and string sz. */ |
stringbase = ((char *) raw_armap |
+ HPUX_SYMDEF_COUNT_SIZE |
+ BSD_STRING_COUNT_SIZE); |
rbase = (bfd_byte *) stringbase + stringsize; |
amt = ardata->symdef_count * BSD_SYMDEF_SIZE; |
if (amt > left) |
goto wrong_format; |
|
ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt); |
if (!ardata->symdefs) |
return FALSE; |
|
for (counter = 0, set = ardata->symdefs; |
counter < ardata->symdef_count; |
counter++, set++, rbase += BSD_SYMDEF_SIZE) |
{ |
set->name = H_GET_32 (abfd, rbase) + stringbase; |
set->file_offset = H_GET_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); |
} |
|
ardata->first_file_filepos = bfd_tell (abfd); |
/* Pad to an even boundary if you have to. */ |
ardata->first_file_filepos += (ardata->first_file_filepos) % 2; |
/* FIXME, we should provide some way to free raw_ardata when |
we are done using the strings from it. For now, it seems |
to be allocated on an objalloc anyway... */ |
bfd_has_map (abfd) = TRUE; |
return TRUE; |
} |
|
/** Extended name table. |
|
Normally archives support only 14-character filenames. |
|
Intel has extended the format: longer names are stored in a special |
element (the first in the archive, or second if there is an armap); |
the name in the ar_hdr is replaced by <space><index into filename |
element>. Index is the P.R. of an int (decimal). Data General have |
extended the format by using the prefix // for the special element. */ |
|
/* Returns FALSE on error, TRUE otherwise. */ |
|
bfd_boolean |
_bfd_slurp_extended_name_table (bfd *abfd) |
{ |
char nextname[17]; |
struct areltdata *namedata; |
bfd_size_type amt; |
|
/* FIXME: Formatting sucks here, and in case of failure of BFD_READ, |
we probably don't want to return TRUE. */ |
if (bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET) != 0) |
return FALSE; |
|
if (bfd_bread (nextname, 16, abfd) == 16) |
{ |
if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
return FALSE; |
|
if (! CONST_STRNEQ (nextname, "ARFILENAMES/ ") |
&& ! CONST_STRNEQ (nextname, "// ")) |
{ |
bfd_ardata (abfd)->extended_names = NULL; |
bfd_ardata (abfd)->extended_names_size = 0; |
return TRUE; |
} |
|
namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd); |
if (namedata == NULL) |
return FALSE; |
|
amt = namedata->parsed_size; |
if (amt + 1 == 0) |
goto byebye; |
|
bfd_ardata (abfd)->extended_names_size = amt; |
bfd_ardata (abfd)->extended_names = (char *) bfd_zalloc (abfd, amt + 1); |
if (bfd_ardata (abfd)->extended_names == NULL) |
{ |
byebye: |
free (namedata); |
return FALSE; |
} |
|
if (bfd_bread (bfd_ardata (abfd)->extended_names, amt, abfd) != amt) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_malformed_archive); |
bfd_release (abfd, (bfd_ardata (abfd)->extended_names)); |
bfd_ardata (abfd)->extended_names = NULL; |
goto byebye; |
} |
|
/* Since the archive is supposed to be printable if it contains |
text, the entries in the list are newline-padded, not null |
padded. In SVR4-style archives, the names also have a |
trailing '/'. DOS/NT created archive often have \ in them |
We'll fix all problems here.. */ |
{ |
char *ext_names = bfd_ardata (abfd)->extended_names; |
char *temp = ext_names; |
char *limit = temp + namedata->parsed_size; |
for (; temp < limit; ++temp) |
{ |
if (*temp == ARFMAG[1]) |
temp[temp > ext_names && temp[-1] == '/' ? -1 : 0] = '\0'; |
if (*temp == '\\') |
*temp = '/'; |
} |
*limit = '\0'; |
} |
|
/* Pad to an even boundary if you have to. */ |
bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd); |
bfd_ardata (abfd)->first_file_filepos += |
(bfd_ardata (abfd)->first_file_filepos) % 2; |
|
free (namedata); |
} |
return TRUE; |
} |
|
#ifdef VMS |
|
/* Return a copy of the stuff in the filename between any :]> and a |
semicolon. */ |
|
static const char * |
normalize (bfd *abfd, const char *file) |
{ |
const char *first; |
const char *last; |
char *copy; |
|
first = file + strlen (file) - 1; |
last = first + 1; |
|
while (first != file) |
{ |
if (*first == ';') |
last = first; |
if (*first == ':' || *first == ']' || *first == '>') |
{ |
first++; |
break; |
} |
first--; |
} |
|
copy = bfd_alloc (abfd, last - first + 1); |
if (copy == NULL) |
return NULL; |
|
memcpy (copy, first, last - first); |
copy[last - first] = 0; |
|
return copy; |
} |
|
#else |
static const char * |
normalize (bfd *abfd ATTRIBUTE_UNUSED, const char *file) |
{ |
return lbasename (file); |
} |
#endif |
|
/* Adjust a relative path name based on the reference path. |
For example: |
|
Relative path Reference path Result |
------------- -------------- ------ |
bar.o lib.a bar.o |
foo/bar.o lib.a foo/bar.o |
bar.o foo/lib.a ../bar.o |
foo/bar.o baz/lib.a ../foo/bar.o |
bar.o ../lib.a <parent of current dir>/bar.o |
; ../bar.o ../lib.a bar.o |
; ../bar.o lib.a ../bar.o |
foo/bar.o ../lib.a <parent of current dir>/foo/bar.o |
bar.o ../../lib.a <grandparent>/<parent>/bar.o |
bar.o foo/baz/lib.a ../../bar.o |
|
Note - the semicolons above are there to prevent the BFD chew |
utility from interpreting those lines as prototypes to put into |
the autogenerated bfd.h header... |
|
Note - the string is returned in a static buffer. */ |
|
static const char * |
adjust_relative_path (const char * path, const char * ref_path) |
{ |
static char *pathbuf = NULL; |
static unsigned int pathbuf_len = 0; |
const char *pathp; |
const char *refp; |
char * lpath; |
char * rpath; |
unsigned int len; |
unsigned int dir_up = 0; |
unsigned int dir_down = 0; |
char *newp; |
char * pwd = getpwd (); |
const char * down; |
|
/* Remove symlinks, '.' and '..' from the paths, if possible. */ |
lpath = lrealpath (path); |
pathp = lpath == NULL ? path : lpath; |
|
rpath = lrealpath (ref_path); |
refp = rpath == NULL ? ref_path : rpath; |
|
/* Remove common leading path elements. */ |
for (;;) |
{ |
const char *e1 = pathp; |
const char *e2 = refp; |
|
while (*e1 && ! IS_DIR_SEPARATOR (*e1)) |
++e1; |
while (*e2 && ! IS_DIR_SEPARATOR (*e2)) |
++e2; |
if (*e1 == '\0' || *e2 == '\0' || e1 - pathp != e2 - refp |
|| filename_ncmp (pathp, refp, e1 - pathp) != 0) |
break; |
pathp = e1 + 1; |
refp = e2 + 1; |
} |
|
len = strlen (pathp) + 1; |
/* For each leading path element in the reference path, |
insert "../" into the path. */ |
for (; *refp; ++refp) |
if (IS_DIR_SEPARATOR (*refp)) |
{ |
/* PR 12710: If the path element is "../" then instead of |
inserting "../" we need to insert the name of the directory |
at the current level. */ |
if (refp > ref_path + 1 |
&& refp[-1] == '.' |
&& refp[-2] == '.') |
dir_down ++; |
else |
dir_up ++; |
} |
|
/* If the lrealpath calls above succeeded then we should never |
see dir_up and dir_down both being non-zero. */ |
|
len += 3 * dir_up; |
|
if (dir_down) |
{ |
down = pwd + strlen (pwd) - 1; |
|
while (dir_down && down > pwd) |
{ |
if (IS_DIR_SEPARATOR (*down)) |
--dir_down; |
} |
BFD_ASSERT (dir_down == 0); |
len += strlen (down) + 1; |
} |
else |
down = NULL; |
|
if (len > pathbuf_len) |
{ |
if (pathbuf != NULL) |
free (pathbuf); |
pathbuf_len = 0; |
pathbuf = (char *) bfd_malloc (len); |
if (pathbuf == NULL) |
goto out; |
pathbuf_len = len; |
} |
|
newp = pathbuf; |
while (dir_up-- > 0) |
{ |
/* FIXME: Support Windows style path separators as well. */ |
strcpy (newp, "../"); |
newp += 3; |
} |
|
if (down) |
sprintf (newp, "%s/%s", down, pathp); |
else |
strcpy (newp, pathp); |
|
out: |
free (lpath); |
free (rpath); |
return pathbuf; |
} |
|
/* Build a BFD style extended name table. */ |
|
bfd_boolean |
_bfd_archive_bsd_construct_extended_name_table (bfd *abfd, |
char **tabloc, |
bfd_size_type *tablen, |
const char **name) |
{ |
*name = "ARFILENAMES/"; |
return _bfd_construct_extended_name_table (abfd, FALSE, tabloc, tablen); |
} |
|
/* Build an SVR4 style extended name table. */ |
|
bfd_boolean |
_bfd_archive_coff_construct_extended_name_table (bfd *abfd, |
char **tabloc, |
bfd_size_type *tablen, |
const char **name) |
{ |
*name = "//"; |
return _bfd_construct_extended_name_table (abfd, TRUE, tabloc, tablen); |
} |
|
/* Follows archive_head and produces an extended name table if |
necessary. Returns (in tabloc) a pointer to an extended name |
table, and in tablen the length of the table. If it makes an entry |
it clobbers the filename so that the element may be written without |
further massage. Returns TRUE if it ran successfully, FALSE if |
something went wrong. A successful return may still involve a |
zero-length tablen! */ |
|
bfd_boolean |
_bfd_construct_extended_name_table (bfd *abfd, |
bfd_boolean trailing_slash, |
char **tabloc, |
bfd_size_type *tablen) |
{ |
unsigned int maxname = ar_maxnamelen (abfd); |
bfd_size_type total_namelen = 0; |
bfd *current; |
char *strptr; |
const char *last_filename; |
long last_stroff; |
|
*tablen = 0; |
last_filename = NULL; |
|
/* Figure out how long the table should be. */ |
for (current = abfd->archive_head; |
current != NULL; |
current = current->archive_next) |
{ |
const char *normal; |
unsigned int thislen; |
|
if (bfd_is_thin_archive (abfd)) |
{ |
const char *filename = current->filename; |
|
/* If the element being added is a member of another archive |
(i.e., we are flattening), use the containing archive's name. */ |
if (current->my_archive |
&& ! bfd_is_thin_archive (current->my_archive)) |
filename = current->my_archive->filename; |
|
/* If the path is the same as the previous path seen, |
reuse it. This can happen when flattening a thin |
archive that contains other archives. */ |
if (last_filename && filename_cmp (last_filename, filename) == 0) |
continue; |
|
last_filename = filename; |
|
/* If the path is relative, adjust it relative to |
the containing archive. */ |
if (! IS_ABSOLUTE_PATH (filename) |
&& ! IS_ABSOLUTE_PATH (abfd->filename)) |
normal = adjust_relative_path (filename, abfd->filename); |
else |
normal = filename; |
|
/* In a thin archive, always store the full pathname |
in the extended name table. */ |
total_namelen += strlen (normal) + 1; |
if (trailing_slash) |
/* Leave room for trailing slash. */ |
++total_namelen; |
|
continue; |
} |
|
normal = normalize (current, current->filename); |
if (normal == NULL) |
return FALSE; |
|
thislen = strlen (normal); |
|
if (thislen > maxname |
&& (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) |
thislen = maxname; |
|
if (thislen > maxname) |
{ |
/* Add one to leave room for \n. */ |
total_namelen += thislen + 1; |
if (trailing_slash) |
{ |
/* Leave room for trailing slash. */ |
++total_namelen; |
} |
} |
else |
{ |
struct ar_hdr *hdr = arch_hdr (current); |
if (filename_ncmp (normal, hdr->ar_name, thislen) != 0 |
|| (thislen < sizeof hdr->ar_name |
&& hdr->ar_name[thislen] != ar_padchar (current))) |
{ |
/* Must have been using extended format even though it |
didn't need to. Fix it to use normal format. */ |
memcpy (hdr->ar_name, normal, thislen); |
if (thislen < maxname |
|| (thislen == maxname && thislen < sizeof hdr->ar_name)) |
hdr->ar_name[thislen] = ar_padchar (current); |
} |
} |
} |
|
if (total_namelen == 0) |
return TRUE; |
|
*tabloc = (char *) bfd_zalloc (abfd, total_namelen); |
if (*tabloc == NULL) |
return FALSE; |
|
*tablen = total_namelen; |
strptr = *tabloc; |
|
last_filename = NULL; |
last_stroff = 0; |
|
for (current = abfd->archive_head; |
current != NULL; |
current = current->archive_next) |
{ |
const char *normal; |
unsigned int thislen; |
long stroff; |
const char *filename = current->filename; |
|
if (bfd_is_thin_archive (abfd)) |
{ |
/* If the element being added is a member of another archive |
(i.e., we are flattening), use the containing archive's name. */ |
if (current->my_archive |
&& ! bfd_is_thin_archive (current->my_archive)) |
filename = current->my_archive->filename; |
/* If the path is the same as the previous path seen, |
reuse it. This can happen when flattening a thin |
archive that contains other archives. |
If the path is relative, adjust it relative to |
the containing archive. */ |
if (last_filename && filename_cmp (last_filename, filename) == 0) |
normal = last_filename; |
else if (! IS_ABSOLUTE_PATH (filename) |
&& ! IS_ABSOLUTE_PATH (abfd->filename)) |
normal = adjust_relative_path (filename, abfd->filename); |
else |
normal = filename; |
} |
else |
{ |
normal = normalize (current, filename); |
if (normal == NULL) |
return FALSE; |
} |
|
thislen = strlen (normal); |
if (thislen > maxname || bfd_is_thin_archive (abfd)) |
{ |
/* Works for now; may need to be re-engineered if we |
encounter an oddball archive format and want to |
generalise this hack. */ |
struct ar_hdr *hdr = arch_hdr (current); |
if (normal == last_filename) |
stroff = last_stroff; |
else |
{ |
strcpy (strptr, normal); |
if (! trailing_slash) |
strptr[thislen] = ARFMAG[1]; |
else |
{ |
strptr[thislen] = '/'; |
strptr[thislen + 1] = ARFMAG[1]; |
} |
stroff = strptr - *tabloc; |
last_stroff = stroff; |
} |
hdr->ar_name[0] = ar_padchar (current); |
if (bfd_is_thin_archive (abfd) && current->origin > 0) |
{ |
int len = snprintf (hdr->ar_name + 1, maxname - 1, "%-ld:", |
stroff); |
_bfd_ar_spacepad (hdr->ar_name + 1 + len, maxname - 1 - len, |
"%-ld", |
current->origin - sizeof (struct ar_hdr)); |
} |
else |
_bfd_ar_spacepad (hdr->ar_name + 1, maxname - 1, "%-ld", stroff); |
if (normal != last_filename) |
{ |
strptr += thislen + 1; |
if (trailing_slash) |
++strptr; |
last_filename = filename; |
} |
} |
} |
|
return TRUE; |
} |
|
/* Do not construct an extended name table but transforms name field into |
its extended form. */ |
|
bfd_boolean |
_bfd_archive_bsd44_construct_extended_name_table (bfd *abfd, |
char **tabloc, |
bfd_size_type *tablen, |
const char **name) |
{ |
unsigned int maxname = ar_maxnamelen (abfd); |
bfd *current; |
|
*tablen = 0; |
*tabloc = NULL; |
*name = NULL; |
|
for (current = abfd->archive_head; |
current != NULL; |
current = current->archive_next) |
{ |
const char *normal = normalize (current, current->filename); |
int has_space = 0; |
unsigned int len; |
|
if (normal == NULL) |
return FALSE; |
|
for (len = 0; normal[len]; len++) |
if (normal[len] == ' ') |
has_space = 1; |
|
if (len > maxname || has_space) |
{ |
struct ar_hdr *hdr = arch_hdr (current); |
|
len = (len + 3) & ~3; |
arch_eltdata (current)->extra_size = len; |
_bfd_ar_spacepad (hdr->ar_name, maxname, "#1/%lu", len); |
} |
} |
|
return TRUE; |
} |
|
/* Write an archive header. */ |
|
bfd_boolean |
_bfd_generic_write_ar_hdr (bfd *archive, bfd *abfd) |
{ |
struct ar_hdr *hdr = arch_hdr (abfd); |
|
if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
return FALSE; |
return TRUE; |
} |
|
/* Write an archive header using BSD4.4 convention. */ |
|
bfd_boolean |
_bfd_bsd44_write_ar_hdr (bfd *archive, bfd *abfd) |
{ |
struct ar_hdr *hdr = arch_hdr (abfd); |
|
if (is_bsd44_extended_name (hdr->ar_name)) |
{ |
/* This is a BSD 4.4 extended name. */ |
const char *fullname = normalize (abfd, abfd->filename); |
unsigned int len = strlen (fullname); |
unsigned int padded_len = (len + 3) & ~3; |
|
BFD_ASSERT (padded_len == arch_eltdata (abfd)->extra_size); |
|
if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), |
arch_eltdata (abfd)->parsed_size + padded_len)) |
return FALSE; |
|
if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
return FALSE; |
|
if (bfd_bwrite (fullname, len, archive) != len) |
return FALSE; |
|
if (len & 3) |
{ |
static const char pad[3] = { 0, 0, 0 }; |
|
len = 4 - (len & 3); |
if (bfd_bwrite (pad, len, archive) != len) |
return FALSE; |
} |
} |
else |
{ |
if (bfd_bwrite (hdr, sizeof (*hdr), archive) != sizeof (*hdr)) |
return FALSE; |
} |
return TRUE; |
} |
|
/* A couple of functions for creating ar_hdrs. */ |
|
#ifdef HPUX_LARGE_AR_IDS |
/* Function to encode large UID/GID values according to HP. */ |
|
static void |
hpux_uid_gid_encode (char str[6], long int id) |
{ |
int cnt; |
|
str[5] = '@' + (id & 3); |
id >>= 2; |
|
for (cnt = 4; cnt >= 0; --cnt, id >>= 6) |
str[cnt] = ' ' + (id & 0x3f); |
} |
#endif /* HPUX_LARGE_AR_IDS */ |
|
#ifndef HAVE_GETUID |
#define getuid() 0 |
#endif |
|
#ifndef HAVE_GETGID |
#define getgid() 0 |
#endif |
|
/* Takes a filename, returns an arelt_data for it, or NULL if it can't |
make one. The filename must refer to a filename in the filesystem. |
The filename field of the ar_hdr will NOT be initialized. If member |
is set, and it's an in-memory bfd, we fake it. */ |
|
static struct areltdata * |
bfd_ar_hdr_from_filesystem (bfd *abfd, const char *filename, bfd *member) |
{ |
struct stat status; |
struct areltdata *ared; |
struct ar_hdr *hdr; |
bfd_size_type amt; |
|
if (member && (member->flags & BFD_IN_MEMORY) != 0) |
{ |
/* Assume we just "made" the member, and fake it. */ |
struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream; |
time (&status.st_mtime); |
status.st_uid = getuid (); |
status.st_gid = getgid (); |
status.st_mode = 0644; |
status.st_size = bim->size; |
} |
else if (stat (filename, &status) != 0) |
{ |
bfd_set_error (bfd_error_system_call); |
return NULL; |
} |
|
/* If the caller requested that the BFD generate deterministic output, |
fake values for modification time, UID, GID, and file mode. */ |
if ((abfd->flags & BFD_DETERMINISTIC_OUTPUT) != 0) |
{ |
status.st_mtime = 0; |
status.st_uid = 0; |
status.st_gid = 0; |
status.st_mode = 0644; |
} |
|
amt = sizeof (struct ar_hdr) + sizeof (struct areltdata); |
ared = (struct areltdata *) bfd_zmalloc (amt); |
if (ared == NULL) |
return NULL; |
hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata)); |
|
/* ar headers are space padded, not null padded! */ |
memset (hdr, ' ', sizeof (struct ar_hdr)); |
|
_bfd_ar_spacepad (hdr->ar_date, sizeof (hdr->ar_date), "%-12ld", |
status.st_mtime); |
#ifdef HPUX_LARGE_AR_IDS |
/* HP has a very "special" way to handle UID/GID's with numeric values |
> 99999. */ |
if (status.st_uid > 99999) |
hpux_uid_gid_encode (hdr->ar_uid, (long) status.st_uid); |
else |
#endif |
_bfd_ar_spacepad (hdr->ar_uid, sizeof (hdr->ar_uid), "%ld", |
status.st_uid); |
#ifdef HPUX_LARGE_AR_IDS |
/* HP has a very "special" way to handle UID/GID's with numeric values |
> 99999. */ |
if (status.st_gid > 99999) |
hpux_uid_gid_encode (hdr->ar_gid, (long) status.st_gid); |
else |
#endif |
_bfd_ar_spacepad (hdr->ar_gid, sizeof (hdr->ar_gid), "%ld", |
status.st_gid); |
_bfd_ar_spacepad (hdr->ar_mode, sizeof (hdr->ar_mode), "%-8lo", |
status.st_mode); |
if (!_bfd_ar_sizepad (hdr->ar_size, sizeof (hdr->ar_size), status.st_size)) |
{ |
free (ared); |
return NULL; |
} |
memcpy (hdr->ar_fmag, ARFMAG, 2); |
ared->parsed_size = status.st_size; |
ared->arch_header = (char *) hdr; |
|
return ared; |
} |
|
/* Analogous to stat call. */ |
|
int |
bfd_generic_stat_arch_elt (bfd *abfd, struct stat *buf) |
{ |
struct ar_hdr *hdr; |
char *aloser; |
|
if (abfd->arelt_data == NULL) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return -1; |
} |
|
hdr = arch_hdr (abfd); |
|
#define foo(arelt, stelt, size) \ |
buf->stelt = strtol (hdr->arelt, &aloser, size); \ |
if (aloser == hdr->arelt) \ |
return -1; |
|
/* Some platforms support special notations for large IDs. */ |
#ifdef HPUX_LARGE_AR_IDS |
# define foo2(arelt, stelt, size) \ |
if (hdr->arelt[5] == ' ') \ |
{ \ |
foo (arelt, stelt, size); \ |
} \ |
else \ |
{ \ |
int cnt; \ |
for (buf->stelt = cnt = 0; cnt < 5; ++cnt) \ |
{ \ |
if (hdr->arelt[cnt] < ' ' || hdr->arelt[cnt] > ' ' + 0x3f) \ |
return -1; \ |
buf->stelt <<= 6; \ |
buf->stelt += hdr->arelt[cnt] - ' '; \ |
} \ |
if (hdr->arelt[5] < '@' || hdr->arelt[5] > '@' + 3) \ |
return -1; \ |
buf->stelt <<= 2; \ |
buf->stelt += hdr->arelt[5] - '@'; \ |
} |
#else |
# define foo2(arelt, stelt, size) foo (arelt, stelt, size) |
#endif |
|
foo (ar_date, st_mtime, 10); |
foo2 (ar_uid, st_uid, 10); |
foo2 (ar_gid, st_gid, 10); |
foo (ar_mode, st_mode, 8); |
|
buf->st_size = arch_eltdata (abfd)->parsed_size; |
|
return 0; |
} |
|
void |
bfd_dont_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
{ |
/* FIXME: This interacts unpleasantly with ar's quick-append option. |
Fortunately ic960 users will never use that option. Fixing this |
is very hard; fortunately I know how to do it and will do so once |
intel's release is out the door. */ |
|
struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
size_t length; |
const char *filename; |
size_t maxlen = ar_maxnamelen (abfd); |
|
if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) |
{ |
bfd_bsd_truncate_arname (abfd, pathname, arhdr); |
return; |
} |
|
filename = normalize (abfd, pathname); |
if (filename == NULL) |
{ |
/* FIXME */ |
abort (); |
} |
|
length = strlen (filename); |
|
if (length <= maxlen) |
memcpy (hdr->ar_name, filename, length); |
|
/* Add the padding character if there is room for it. */ |
if (length < maxlen |
|| (length == maxlen && length < sizeof hdr->ar_name)) |
(hdr->ar_name)[length] = ar_padchar (abfd); |
} |
|
void |
bfd_bsd_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
{ |
struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
size_t length; |
const char *filename = lbasename (pathname); |
size_t maxlen = ar_maxnamelen (abfd); |
|
length = strlen (filename); |
|
if (length <= maxlen) |
memcpy (hdr->ar_name, filename, length); |
else |
{ |
/* pathname: meet procrustes */ |
memcpy (hdr->ar_name, filename, maxlen); |
length = maxlen; |
} |
|
if (length < maxlen) |
(hdr->ar_name)[length] = ar_padchar (abfd); |
} |
|
/* Store name into ar header. Truncates the name to fit. |
1> strip pathname to be just the basename. |
2> if it's short enuf to fit, stuff it in. |
3> If it doesn't end with .o, truncate it to fit |
4> truncate it before the .o, append .o, stuff THAT in. */ |
|
/* This is what gnu ar does. It's better but incompatible with the |
bsd ar. */ |
|
void |
bfd_gnu_truncate_arname (bfd *abfd, const char *pathname, char *arhdr) |
{ |
struct ar_hdr *hdr = (struct ar_hdr *) arhdr; |
size_t length; |
const char *filename = lbasename (pathname); |
size_t maxlen = ar_maxnamelen (abfd); |
|
length = strlen (filename); |
|
if (length <= maxlen) |
memcpy (hdr->ar_name, filename, length); |
else |
{ |
/* pathname: meet procrustes. */ |
memcpy (hdr->ar_name, filename, maxlen); |
if ((filename[length - 2] == '.') && (filename[length - 1] == 'o')) |
{ |
hdr->ar_name[maxlen - 2] = '.'; |
hdr->ar_name[maxlen - 1] = 'o'; |
} |
length = maxlen; |
} |
|
if (length < 16) |
(hdr->ar_name)[length] = ar_padchar (abfd); |
} |
|
/* The BFD is open for write and has its format set to bfd_archive. */ |
|
bfd_boolean |
_bfd_write_archive_contents (bfd *arch) |
{ |
bfd *current; |
char *etable = NULL; |
bfd_size_type elength = 0; |
const char *ename = NULL; |
bfd_boolean makemap = bfd_has_map (arch); |
/* If no .o's, don't bother to make a map. */ |
bfd_boolean hasobjects = FALSE; |
bfd_size_type wrote; |
int tries; |
char *armag; |
|
/* Verify the viability of all entries; if any of them live in the |
filesystem (as opposed to living in an archive open for input) |
then construct a fresh ar_hdr for them. */ |
for (current = arch->archive_head; |
current != NULL; |
current = current->archive_next) |
{ |
/* This check is checking the bfds for the objects we're reading |
from (which are usually either an object file or archive on |
disk), not the archive entries we're writing to. We don't |
actually create bfds for the archive members, we just copy |
them byte-wise when we write out the archive. */ |
if (bfd_write_p (current)) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
goto input_err; |
} |
if (!current->arelt_data) |
{ |
current->arelt_data = |
bfd_ar_hdr_from_filesystem (arch, current->filename, current); |
if (!current->arelt_data) |
goto input_err; |
|
/* Put in the file name. */ |
BFD_SEND (arch, _bfd_truncate_arname, |
(arch, current->filename, (char *) arch_hdr (current))); |
} |
|
if (makemap && ! hasobjects) |
{ /* Don't bother if we won't make a map! */ |
if ((bfd_check_format (current, bfd_object))) |
hasobjects = TRUE; |
} |
} |
|
if (!BFD_SEND (arch, _bfd_construct_extended_name_table, |
(arch, &etable, &elength, &ename))) |
return FALSE; |
|
if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0) |
return FALSE; |
armag = ARMAG; |
if (bfd_is_thin_archive (arch)) |
armag = ARMAGT; |
wrote = bfd_bwrite (armag, SARMAG, arch); |
if (wrote != SARMAG) |
return FALSE; |
|
if (makemap && hasobjects) |
{ |
if (! _bfd_compute_and_write_armap (arch, (unsigned int) elength)) |
return FALSE; |
} |
|
if (elength != 0) |
{ |
struct ar_hdr hdr; |
|
memset (&hdr, ' ', sizeof (struct ar_hdr)); |
memcpy (hdr.ar_name, ename, strlen (ename)); |
/* Round size up to even number in archive header. */ |
if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), |
(elength + 1) & ~(bfd_size_type) 1)) |
return FALSE; |
memcpy (hdr.ar_fmag, ARFMAG, 2); |
if ((bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
!= sizeof (struct ar_hdr)) |
|| bfd_bwrite (etable, elength, arch) != elength) |
return FALSE; |
if ((elength % 2) == 1) |
{ |
if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) |
return FALSE; |
} |
} |
|
for (current = arch->archive_head; |
current != NULL; |
current = current->archive_next) |
{ |
char buffer[DEFAULT_BUFFERSIZE]; |
bfd_size_type remaining = arelt_size (current); |
|
/* Write ar header. */ |
if (!_bfd_write_ar_hdr (arch, current)) |
return FALSE; |
if (bfd_is_thin_archive (arch)) |
continue; |
if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0) |
goto input_err; |
|
while (remaining) |
{ |
unsigned int amt = DEFAULT_BUFFERSIZE; |
|
if (amt > remaining) |
amt = remaining; |
errno = 0; |
if (bfd_bread (buffer, amt, current) != amt) |
{ |
if (bfd_get_error () != bfd_error_system_call) |
bfd_set_error (bfd_error_file_truncated); |
goto input_err; |
} |
if (bfd_bwrite (buffer, amt, arch) != amt) |
return FALSE; |
remaining -= amt; |
} |
|
if ((arelt_size (current) % 2) == 1) |
{ |
if (bfd_bwrite (&ARFMAG[1], 1, arch) != 1) |
return FALSE; |
} |
} |
|
if (makemap && hasobjects) |
{ |
/* Verify the timestamp in the archive file. If it would not be |
accepted by the linker, rewrite it until it would be. If |
anything odd happens, break out and just return. (The |
Berkeley linker checks the timestamp and refuses to read the |
table-of-contents if it is >60 seconds less than the file's |
modified-time. That painful hack requires this painful hack. */ |
tries = 1; |
do |
{ |
if (bfd_update_armap_timestamp (arch)) |
break; |
(*_bfd_error_handler) |
(_("Warning: writing archive was slow: rewriting timestamp\n")); |
} |
while (++tries < 6); |
} |
|
return TRUE; |
|
input_err: |
bfd_set_error (bfd_error_on_input, current, bfd_get_error ()); |
return FALSE; |
} |
|
/* Note that the namidx for the first symbol is 0. */ |
|
bfd_boolean |
_bfd_compute_and_write_armap (bfd *arch, unsigned int elength) |
{ |
char *first_name = NULL; |
bfd *current; |
file_ptr elt_no = 0; |
struct orl *map = NULL; |
unsigned int orl_max = 1024; /* Fine initial default. */ |
unsigned int orl_count = 0; |
int stridx = 0; |
asymbol **syms = NULL; |
long syms_max = 0; |
bfd_boolean ret; |
bfd_size_type amt; |
|
/* Dunno if this is the best place for this info... */ |
if (elength != 0) |
elength += sizeof (struct ar_hdr); |
elength += elength % 2; |
|
amt = orl_max * sizeof (struct orl); |
map = (struct orl *) bfd_malloc (amt); |
if (map == NULL) |
goto error_return; |
|
/* We put the symbol names on the arch objalloc, and then discard |
them when done. */ |
first_name = (char *) bfd_alloc (arch, 1); |
if (first_name == NULL) |
goto error_return; |
|
/* Drop all the files called __.SYMDEF, we're going to make our own. */ |
while (arch->archive_head |
&& strcmp (arch->archive_head->filename, "__.SYMDEF") == 0) |
arch->archive_head = arch->archive_head->archive_next; |
|
/* Map over each element. */ |
for (current = arch->archive_head; |
current != NULL; |
current = current->archive_next, elt_no++) |
{ |
if (bfd_check_format (current, bfd_object) |
&& (bfd_get_file_flags (current) & HAS_SYMS) != 0) |
{ |
long storage; |
long symcount; |
long src_count; |
|
storage = bfd_get_symtab_upper_bound (current); |
if (storage < 0) |
goto error_return; |
|
if (storage != 0) |
{ |
if (storage > syms_max) |
{ |
if (syms_max > 0) |
free (syms); |
syms_max = storage; |
syms = (asymbol **) bfd_malloc (syms_max); |
if (syms == NULL) |
goto error_return; |
} |
symcount = bfd_canonicalize_symtab (current, syms); |
if (symcount < 0) |
goto error_return; |
|
/* Now map over all the symbols, picking out the ones we |
want. */ |
for (src_count = 0; src_count < symcount; src_count++) |
{ |
flagword flags = (syms[src_count])->flags; |
asection *sec = syms[src_count]->section; |
|
if (((flags & (BSF_GLOBAL |
| BSF_WEAK |
| BSF_INDIRECT |
| BSF_GNU_UNIQUE)) != 0 |
|| bfd_is_com_section (sec)) |
&& ! bfd_is_und_section (sec)) |
{ |
bfd_size_type namelen; |
struct orl *new_map; |
|
/* This symbol will go into the archive header. */ |
if (orl_count == orl_max) |
{ |
orl_max *= 2; |
amt = orl_max * sizeof (struct orl); |
new_map = (struct orl *) bfd_realloc (map, amt); |
if (new_map == NULL) |
goto error_return; |
|
map = new_map; |
} |
|
namelen = strlen (syms[src_count]->name); |
amt = sizeof (char *); |
map[orl_count].name = (char **) bfd_alloc (arch, amt); |
if (map[orl_count].name == NULL) |
goto error_return; |
*(map[orl_count].name) = (char *) bfd_alloc (arch, |
namelen + 1); |
if (*(map[orl_count].name) == NULL) |
goto error_return; |
strcpy (*(map[orl_count].name), syms[src_count]->name); |
map[orl_count].u.abfd = current; |
map[orl_count].namidx = stridx; |
|
stridx += namelen + 1; |
++orl_count; |
} |
} |
} |
|
/* Now ask the BFD to free up any cached information, so we |
don't fill all of memory with symbol tables. */ |
if (! bfd_free_cached_info (current)) |
goto error_return; |
} |
} |
|
/* OK, now we have collected all the data, let's write them out. */ |
ret = BFD_SEND (arch, write_armap, |
(arch, elength, map, orl_count, stridx)); |
|
if (syms_max > 0) |
free (syms); |
if (map != NULL) |
free (map); |
if (first_name != NULL) |
bfd_release (arch, first_name); |
|
return ret; |
|
error_return: |
if (syms_max > 0) |
free (syms); |
if (map != NULL) |
free (map); |
if (first_name != NULL) |
bfd_release (arch, first_name); |
|
return FALSE; |
} |
|
bfd_boolean |
bsd_write_armap (bfd *arch, |
unsigned int elength, |
struct orl *map, |
unsigned int orl_count, |
int stridx) |
{ |
int padit = stridx & 1; |
unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE; |
unsigned int stringsize = stridx + padit; |
/* Include 8 bytes to store ranlibsize and stringsize in output. */ |
unsigned int mapsize = ranlibsize + stringsize + 8; |
file_ptr firstreal; |
bfd *current = arch->archive_head; |
bfd *last_elt = current; /* Last element arch seen. */ |
bfd_byte temp[4]; |
unsigned int count; |
struct ar_hdr hdr; |
long uid, gid; |
|
firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG; |
|
/* If deterministic, we use 0 as the timestamp in the map. |
Some linkers may require that the archive filesystem modification |
time is less than (or near to) the archive map timestamp. Those |
linkers should not be used with deterministic mode. (GNU ld and |
Gold do not have this restriction.) */ |
bfd_ardata (arch)->armap_timestamp = 0; |
uid = 0; |
gid = 0; |
if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0) |
{ |
struct stat statbuf; |
|
if (stat (arch->filename, &statbuf) == 0) |
bfd_ardata (arch)->armap_timestamp = (statbuf.st_mtime |
+ ARMAP_TIME_OFFSET); |
uid = getuid(); |
gid = getgid(); |
} |
|
memset (&hdr, ' ', sizeof (struct ar_hdr)); |
memcpy (hdr.ar_name, RANLIBMAG, strlen (RANLIBMAG)); |
bfd_ardata (arch)->armap_datepos = (SARMAG |
+ offsetof (struct ar_hdr, ar_date[0])); |
_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
bfd_ardata (arch)->armap_timestamp); |
_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", uid); |
_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", gid); |
if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) |
return FALSE; |
memcpy (hdr.ar_fmag, ARFMAG, 2); |
if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
!= sizeof (struct ar_hdr)) |
return FALSE; |
H_PUT_32 (arch, ranlibsize, temp); |
if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) |
return FALSE; |
|
for (count = 0; count < orl_count; count++) |
{ |
unsigned int offset; |
bfd_byte buf[BSD_SYMDEF_SIZE]; |
|
if (map[count].u.abfd != last_elt) |
{ |
do |
{ |
struct areltdata *ared = arch_eltdata (current); |
|
firstreal += (ared->parsed_size + ared->extra_size |
+ sizeof (struct ar_hdr)); |
firstreal += firstreal % 2; |
current = current->archive_next; |
} |
while (current != map[count].u.abfd); |
} |
|
/* The archive file format only has 4 bytes to store the offset |
of the member. Check to make sure that firstreal has not grown |
too big. */ |
offset = (unsigned int) firstreal; |
if (firstreal != (file_ptr) offset) |
{ |
bfd_set_error (bfd_error_file_truncated); |
return FALSE; |
} |
|
last_elt = current; |
H_PUT_32 (arch, map[count].namidx, buf); |
H_PUT_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE); |
if (bfd_bwrite (buf, BSD_SYMDEF_SIZE, arch) |
!= BSD_SYMDEF_SIZE) |
return FALSE; |
} |
|
/* Now write the strings themselves. */ |
H_PUT_32 (arch, stringsize, temp); |
if (bfd_bwrite (temp, sizeof (temp), arch) != sizeof (temp)) |
return FALSE; |
for (count = 0; count < orl_count; count++) |
{ |
size_t len = strlen (*map[count].name) + 1; |
|
if (bfd_bwrite (*map[count].name, len, arch) != len) |
return FALSE; |
} |
|
/* The spec sez this should be a newline. But in order to be |
bug-compatible for sun's ar we use a null. */ |
if (padit) |
{ |
if (bfd_bwrite ("", 1, arch) != 1) |
return FALSE; |
} |
|
return TRUE; |
} |
|
/* At the end of archive file handling, update the timestamp in the |
file, so the linker will accept it. |
|
Return TRUE if the timestamp was OK, or an unusual problem happened. |
Return FALSE if we updated the timestamp. */ |
|
bfd_boolean |
_bfd_archive_bsd_update_armap_timestamp (bfd *arch) |
{ |
struct stat archstat; |
struct ar_hdr hdr; |
|
/* If creating deterministic archives, just leave the timestamp as-is. */ |
if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) != 0) |
return TRUE; |
|
/* Flush writes, get last-write timestamp from file, and compare it |
to the timestamp IN the file. */ |
bfd_flush (arch); |
if (bfd_stat (arch, &archstat) == -1) |
{ |
bfd_perror (_("Reading archive file mod timestamp")); |
|
/* Can't read mod time for some reason. */ |
return TRUE; |
} |
if (((long) archstat.st_mtime) <= bfd_ardata (arch)->armap_timestamp) |
/* OK by the linker's rules. */ |
return TRUE; |
|
/* Update the timestamp. */ |
bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET; |
|
/* Prepare an ASCII version suitable for writing. */ |
memset (hdr.ar_date, ' ', sizeof (hdr.ar_date)); |
_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
bfd_ardata (arch)->armap_timestamp); |
|
/* Write it into the file. */ |
bfd_ardata (arch)->armap_datepos = (SARMAG |
+ offsetof (struct ar_hdr, ar_date[0])); |
if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0 |
|| (bfd_bwrite (hdr.ar_date, sizeof (hdr.ar_date), arch) |
!= sizeof (hdr.ar_date))) |
{ |
bfd_perror (_("Writing updated armap timestamp")); |
|
/* Some error while writing. */ |
return TRUE; |
} |
|
/* We updated the timestamp successfully. */ |
return FALSE; |
} |
|
/* A coff armap looks like : |
lARMAG |
struct ar_hdr with name = '/' |
number of symbols |
offset of file for symbol 0 |
offset of file for symbol 1 |
|
offset of file for symbol n-1 |
symbol name 0 |
symbol name 1 |
|
symbol name n-1 */ |
|
bfd_boolean |
coff_write_armap (bfd *arch, |
unsigned int elength, |
struct orl *map, |
unsigned int symbol_count, |
int stridx) |
{ |
/* The size of the ranlib is the number of exported symbols in the |
archive * the number of bytes in an int, + an int for the count. */ |
unsigned int ranlibsize = (symbol_count * 4) + 4; |
unsigned int stringsize = stridx; |
unsigned int mapsize = stringsize + ranlibsize; |
file_ptr archive_member_file_ptr; |
bfd *current = arch->archive_head; |
unsigned int count; |
struct ar_hdr hdr; |
int padit = mapsize & 1; |
|
if (padit) |
mapsize++; |
|
/* Work out where the first object file will go in the archive. */ |
archive_member_file_ptr = (mapsize |
+ elength |
+ sizeof (struct ar_hdr) |
+ SARMAG); |
|
memset (&hdr, ' ', sizeof (struct ar_hdr)); |
hdr.ar_name[0] = '/'; |
if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize)) |
return FALSE; |
_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", |
((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0 |
? time (NULL) : 0)); |
/* This, at least, is what Intel coff sets the values to. */ |
_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0); |
_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0); |
_bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0); |
memcpy (hdr.ar_fmag, ARFMAG, 2); |
|
/* Write the ar header for this item and the number of symbols. */ |
if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
!= sizeof (struct ar_hdr)) |
return FALSE; |
|
if (!bfd_write_bigendian_4byte_int (arch, symbol_count)) |
return FALSE; |
|
/* Two passes, first write the file offsets for each symbol - |
remembering that each offset is on a two byte boundary. */ |
|
/* Write out the file offset for the file associated with each |
symbol, and remember to keep the offsets padded out. */ |
|
current = arch->archive_head; |
count = 0; |
while (current != NULL && count < symbol_count) |
{ |
/* For each symbol which is used defined in this object, write |
out the object file's address in the archive. */ |
|
while (count < symbol_count && map[count].u.abfd == current) |
{ |
unsigned int offset = (unsigned int) archive_member_file_ptr; |
|
/* Catch an attempt to grow an archive past its 4Gb limit. */ |
if (archive_member_file_ptr != (file_ptr) offset) |
{ |
bfd_set_error (bfd_error_file_truncated); |
return FALSE; |
} |
if (!bfd_write_bigendian_4byte_int (arch, offset)) |
return FALSE; |
count++; |
} |
archive_member_file_ptr += sizeof (struct ar_hdr); |
if (! bfd_is_thin_archive (arch)) |
{ |
/* Add size of this archive entry. */ |
archive_member_file_ptr += arelt_size (current); |
/* Remember about the even alignment. */ |
archive_member_file_ptr += archive_member_file_ptr % 2; |
} |
current = current->archive_next; |
} |
|
/* Now write the strings themselves. */ |
for (count = 0; count < symbol_count; count++) |
{ |
size_t len = strlen (*map[count].name) + 1; |
|
if (bfd_bwrite (*map[count].name, len, arch) != len) |
return FALSE; |
} |
|
/* The spec sez this should be a newline. But in order to be |
bug-compatible for arc960 we use a null. */ |
if (padit) |
{ |
if (bfd_bwrite ("", 1, arch) != 1) |
return FALSE; |
} |
|
return TRUE; |
} |
|
static int |
archive_close_worker (void **slot, void *inf ATTRIBUTE_UNUSED) |
{ |
struct ar_cache *ent = (struct ar_cache *) *slot; |
|
bfd_close_all_done (ent->arbfd); |
return 1; |
} |
|
bfd_boolean |
_bfd_archive_close_and_cleanup (bfd *abfd) |
{ |
if (bfd_read_p (abfd) && abfd->format == bfd_archive) |
{ |
bfd *nbfd; |
bfd *next; |
htab_t htab; |
|
/* Close nested archives (if this bfd is a thin archive). */ |
for (nbfd = abfd->nested_archives; nbfd; nbfd = next) |
{ |
next = nbfd->archive_next; |
bfd_close (nbfd); |
} |
|
htab = bfd_ardata (abfd)->cache; |
if (htab) |
{ |
htab_traverse_noresize (htab, archive_close_worker, NULL); |
htab_delete (htab); |
bfd_ardata (abfd)->cache = NULL; |
} |
} |
if (arch_eltdata (abfd) != NULL) |
{ |
struct areltdata *ared = arch_eltdata (abfd); |
htab_t htab = (htab_t) ared->parent_cache; |
|
if (htab) |
{ |
struct ar_cache ent; |
void **slot; |
|
ent.ptr = ared->key; |
slot = htab_find_slot (htab, &ent, NO_INSERT); |
if (slot != NULL) |
{ |
BFD_ASSERT (((struct ar_cache *) *slot)->arbfd == abfd); |
htab_clear_slot (htab, slot); |
} |
} |
} |
return TRUE; |
} |