3441f631d9
in unnecessarily. Also, the size of common is of no interest if the symbol already is in a shared object.
847 lines
21 KiB
C
847 lines
21 KiB
C
/*
|
|
* $Id: lib.c,v 1.16 1995/06/04 21:33:14 pk Exp $ - library routines
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/file.h>
|
|
#include <sys/time.h>
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <ar.h>
|
|
#include <ranlib.h>
|
|
#include <a.out.h>
|
|
#include <stab.h>
|
|
#include <string.h>
|
|
#include <dirent.h>
|
|
#include <ctype.h>
|
|
|
|
#include "ld.h"
|
|
|
|
static void linear_library __P((int, struct file_entry *));
|
|
static void symdef_library __P((int, struct file_entry *, int));
|
|
static struct file_entry *decode_library_subfile __P((int,
|
|
struct file_entry *,
|
|
int, int *));
|
|
|
|
/*
|
|
* Search the library ENTRY, already open on descriptor FD. This means
|
|
* deciding which library members to load, making a chain of `struct
|
|
* file_entry' for those members, and entering their global symbols in the
|
|
* hash table.
|
|
*/
|
|
|
|
void
|
|
search_library(fd, entry)
|
|
int fd;
|
|
struct file_entry *entry;
|
|
{
|
|
int member_length;
|
|
register char *name;
|
|
register struct file_entry *subentry;
|
|
|
|
if (!(link_mode & FORCEARCHIVE) && !undefined_global_sym_count)
|
|
return;
|
|
|
|
/* Examine its first member, which starts SARMAG bytes in. */
|
|
subentry = decode_library_subfile(fd, entry, SARMAG, &member_length);
|
|
if (!subentry)
|
|
return;
|
|
|
|
name = subentry->filename;
|
|
free(subentry);
|
|
|
|
/* Search via __.SYMDEF if that exists, else linearly. */
|
|
|
|
if (!strcmp(name, "__.SYMDEF"))
|
|
symdef_library(fd, entry, member_length);
|
|
else
|
|
linear_library(fd, entry);
|
|
}
|
|
|
|
/*
|
|
* Construct and return a file_entry for a library member. The library's
|
|
* file_entry is library_entry, and the library is open on FD.
|
|
* SUBFILE_OFFSET is the byte index in the library of this member's header.
|
|
* We store the length of the member into *LENGTH_LOC.
|
|
*/
|
|
|
|
static struct file_entry *
|
|
decode_library_subfile(fd, library_entry, subfile_offset, length_loc)
|
|
int fd;
|
|
struct file_entry *library_entry;
|
|
int subfile_offset;
|
|
int *length_loc;
|
|
{
|
|
int bytes_read;
|
|
register int namelen;
|
|
int member_length, content_length;
|
|
int starting_offset;
|
|
register char *name;
|
|
struct ar_hdr hdr1;
|
|
register struct file_entry *subentry;
|
|
|
|
lseek(fd, subfile_offset, 0);
|
|
|
|
bytes_read = read(fd, &hdr1, sizeof hdr1);
|
|
if (!bytes_read)
|
|
return 0; /* end of archive */
|
|
|
|
if (sizeof hdr1 != bytes_read)
|
|
errx(1, "%s: malformed library archive",
|
|
get_file_name(library_entry));
|
|
|
|
if (sscanf(hdr1.ar_size, "%d", &member_length) != 1)
|
|
errx(1, "%s: malformatted header of archive member: %.*s",
|
|
get_file_name(library_entry),
|
|
sizeof(hdr1.ar_name), hdr1.ar_name);
|
|
|
|
subentry = (struct file_entry *) xmalloc(sizeof(struct file_entry));
|
|
bzero(subentry, sizeof(struct file_entry));
|
|
|
|
for (namelen = 0;
|
|
namelen < sizeof hdr1.ar_name
|
|
&& hdr1.ar_name[namelen] != 0 && hdr1.ar_name[namelen] != ' '
|
|
&& hdr1.ar_name[namelen] != '/';
|
|
namelen++);
|
|
|
|
starting_offset = subfile_offset + sizeof hdr1;
|
|
content_length = member_length;
|
|
|
|
#ifdef AR_EFMT1
|
|
/*
|
|
* BSD 4.4 extended AR format: #1/<namelen>, with name as the
|
|
* first <namelen> bytes of the file
|
|
*/
|
|
if (strncmp(hdr1.ar_name, AR_EFMT1, sizeof(AR_EFMT1) - 1) == 0 &&
|
|
isdigit(hdr1.ar_name[sizeof(AR_EFMT1) - 1])) {
|
|
|
|
namelen = atoi(&hdr1.ar_name[sizeof(AR_EFMT1) - 1]);
|
|
name = (char *)xmalloc(namelen + 1);
|
|
if (read(fd, name, namelen) != namelen)
|
|
errx(1, "%s: malformatted archive member: %.*s",
|
|
get_file_name(library_entry),
|
|
sizeof(hdr1.ar_name), hdr1.ar_name);
|
|
name[namelen] = 0;
|
|
content_length -= namelen;
|
|
starting_offset += namelen;
|
|
} else
|
|
|
|
#endif
|
|
{
|
|
name = (char *)xmalloc(namelen + 1);
|
|
strncpy(name, hdr1.ar_name, namelen);
|
|
name[namelen] = 0;
|
|
}
|
|
|
|
subentry->filename = name;
|
|
subentry->local_sym_name = name;
|
|
subentry->starting_offset = starting_offset;
|
|
subentry->superfile = library_entry;
|
|
subentry->total_size = content_length;
|
|
#if 0
|
|
subentry->symbols = 0;
|
|
subentry->strings = 0;
|
|
subentry->subfiles = 0;
|
|
subentry->chain = 0;
|
|
subentry->flags = 0;
|
|
#endif
|
|
|
|
(*length_loc) = member_length;
|
|
|
|
return subentry;
|
|
}
|
|
|
|
static int subfile_wanted_p __P((struct file_entry *));
|
|
|
|
/*
|
|
* Search a library that has a __.SYMDEF member. FD is a descriptor on
|
|
* which the library is open. The file pointer is assumed to point at the
|
|
* __.SYMDEF data. ENTRY is the library's file_entry. MEMBER_LENGTH is the
|
|
* length of the __.SYMDEF data.
|
|
*/
|
|
|
|
static void
|
|
symdef_library(fd, entry, member_length)
|
|
int fd;
|
|
struct file_entry *entry;
|
|
int member_length;
|
|
{
|
|
int *symdef_data = (int *) xmalloc(member_length);
|
|
register struct ranlib *symdef_base;
|
|
char *sym_name_base;
|
|
int nsymdefs;
|
|
int length_of_strings;
|
|
int not_finished;
|
|
int bytes_read;
|
|
register int i;
|
|
struct file_entry *prev = 0;
|
|
int prev_offset = 0;
|
|
|
|
bytes_read = read(fd, symdef_data, member_length);
|
|
if (bytes_read != member_length)
|
|
errx(1, "%s: malformatted __.SYMDEF",
|
|
get_file_name(entry));
|
|
|
|
nsymdefs = md_swap_long(*symdef_data) / sizeof(struct ranlib);
|
|
if (nsymdefs < 0 ||
|
|
nsymdefs * sizeof(struct ranlib) + 2 * sizeof(int) > member_length)
|
|
errx(1, "%s: malformatted __.SYMDEF",
|
|
get_file_name(entry));
|
|
|
|
symdef_base = (struct ranlib *) (symdef_data + 1);
|
|
length_of_strings = md_swap_long(*(int *) (symdef_base + nsymdefs));
|
|
|
|
if (length_of_strings < 0
|
|
|| nsymdefs * sizeof(struct ranlib) + length_of_strings
|
|
+ 2 * sizeof(int) > member_length)
|
|
errx(1, "%s: malformatted __.SYMDEF",
|
|
get_file_name(entry));
|
|
|
|
sym_name_base = sizeof(int) + (char *) (symdef_base + nsymdefs);
|
|
|
|
/* Check all the string indexes for validity. */
|
|
md_swapin_ranlib_hdr(symdef_base, nsymdefs);
|
|
for (i = 0; i < nsymdefs; i++) {
|
|
register int index = symdef_base[i].ran_un.ran_strx;
|
|
if (index < 0 || index >= length_of_strings
|
|
|| (index && *(sym_name_base + index - 1)))
|
|
errx(1, "%s: malformatted __.SYMDEF",
|
|
get_file_name(entry));
|
|
}
|
|
|
|
/*
|
|
* Search the symdef data for members to load. Do this until one
|
|
* whole pass finds nothing to load.
|
|
*/
|
|
|
|
not_finished = 1;
|
|
while (not_finished) {
|
|
|
|
not_finished = 0;
|
|
|
|
/*
|
|
* Scan all the symbols mentioned in the symdef for ones that
|
|
* we need. Load the library members that contain such
|
|
* symbols.
|
|
*/
|
|
|
|
for (i = 0; (i < nsymdefs &&
|
|
((link_mode & FORCEARCHIVE) ||
|
|
undefined_global_sym_count ||
|
|
common_defined_global_count)); i++) {
|
|
|
|
register symbol *sp;
|
|
int junk;
|
|
register int j;
|
|
register int offset = symdef_base[i].ran_off;
|
|
struct file_entry *subentry;
|
|
|
|
|
|
if (symdef_base[i].ran_un.ran_strx < 0)
|
|
continue;
|
|
|
|
sp = getsym_soft(sym_name_base
|
|
+ symdef_base[i].ran_un.ran_strx);
|
|
|
|
/*
|
|
* If we find a symbol that appears to be needed,
|
|
* think carefully about the archive member that the
|
|
* symbol is in.
|
|
*/
|
|
|
|
/*
|
|
* Per Mike Karels' recommendation, we no longer load
|
|
* library files if the only reference(s) that would
|
|
* be satisfied are 'common' references. This
|
|
* prevents some problems with name pollution (e.g. a
|
|
* global common 'utime' linked to a function).
|
|
*
|
|
* If we're not forcing the archive in then we don't
|
|
* need to bother if: we've never heard of the symbol,
|
|
* or if it is already defined. The last clause causes
|
|
* archive members to be searched for definitions
|
|
* satisfying undefined shared object symbols.
|
|
*/
|
|
if (!(link_mode & FORCEARCHIVE) &&
|
|
(!sp || sp->defined ||
|
|
(!(sp->flags & GS_REFERENCED) &&
|
|
!sp->sorefs)))
|
|
continue;
|
|
|
|
/*
|
|
* Don't think carefully about any archive member
|
|
* more than once in a given pass.
|
|
*/
|
|
|
|
if (prev_offset == offset)
|
|
continue;
|
|
prev_offset = offset;
|
|
|
|
/*
|
|
* Read the symbol table of the archive member.
|
|
*/
|
|
|
|
subentry = decode_library_subfile(fd,
|
|
entry, offset, &junk);
|
|
if (subentry == 0)
|
|
errx(1,
|
|
"invalid offset for %s in symbol table of %s",
|
|
sym_name_base
|
|
+ symdef_base[i].ran_un.ran_strx,
|
|
entry->filename);
|
|
|
|
read_entry_symbols(fd, subentry);
|
|
subentry->strings = (char *)
|
|
alloca(subentry->string_size);
|
|
read_entry_strings(fd, subentry);
|
|
|
|
/*
|
|
* Now scan the symbol table and decide whether to
|
|
* load.
|
|
*/
|
|
|
|
if (!(link_mode & FORCEARCHIVE) &&
|
|
!subfile_wanted_p(subentry)) {
|
|
if (subentry->symbols)
|
|
free(subentry->symbols);
|
|
free(subentry);
|
|
} else {
|
|
/*
|
|
* This member is needed; load it. Since we
|
|
* are loading something on this pass, we
|
|
* must make another pass through the symdef
|
|
* data.
|
|
*/
|
|
|
|
not_finished = 1;
|
|
|
|
read_entry_relocation(fd, subentry);
|
|
enter_file_symbols(subentry);
|
|
|
|
if (prev)
|
|
prev->chain = subentry;
|
|
else
|
|
entry->subfiles = subentry;
|
|
prev = subentry;
|
|
|
|
/*
|
|
* Clear out this member's symbols from the
|
|
* symdef data so that following passes won't
|
|
* waste time on them.
|
|
*/
|
|
|
|
for (j = 0; j < nsymdefs; j++) {
|
|
if (symdef_base[j].ran_off == offset)
|
|
symdef_base[j].ran_un.ran_strx = -1;
|
|
}
|
|
|
|
/*
|
|
* We'll read the strings again
|
|
* if we need them.
|
|
*/
|
|
subentry->strings = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
free(symdef_data);
|
|
}
|
|
|
|
/*
|
|
* Search a library that has no __.SYMDEF. ENTRY is the library's file_entry.
|
|
* FD is the descriptor it is open on.
|
|
*/
|
|
|
|
static void
|
|
linear_library(fd, entry)
|
|
int fd;
|
|
struct file_entry *entry;
|
|
{
|
|
register struct file_entry *prev = 0;
|
|
register int this_subfile_offset = SARMAG;
|
|
|
|
while ((link_mode & FORCEARCHIVE) ||
|
|
undefined_global_sym_count || common_defined_global_count) {
|
|
|
|
int member_length;
|
|
register struct file_entry *subentry;
|
|
|
|
subentry = decode_library_subfile(fd, entry,
|
|
this_subfile_offset, &member_length);
|
|
|
|
if (!subentry)
|
|
return;
|
|
|
|
read_entry_symbols(fd, subentry);
|
|
subentry->strings = (char *)alloca(subentry->string_size);
|
|
read_entry_strings(fd, subentry);
|
|
|
|
if (!(link_mode & FORCEARCHIVE) &&
|
|
!subfile_wanted_p(subentry)) {
|
|
if (subentry->symbols)
|
|
free(subentry->symbols);
|
|
free(subentry);
|
|
} else {
|
|
read_entry_relocation(fd, subentry);
|
|
enter_file_symbols(subentry);
|
|
|
|
if (prev)
|
|
prev->chain = subentry;
|
|
else
|
|
entry->subfiles = subentry;
|
|
prev = subentry;
|
|
subentry->strings = 0; /* Since space will dissapear
|
|
* on return */
|
|
}
|
|
|
|
this_subfile_offset += member_length + sizeof(struct ar_hdr);
|
|
if (this_subfile_offset & 1)
|
|
this_subfile_offset++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ENTRY is an entry for a library member. Its symbols have been read into
|
|
* core, but not entered. Return nonzero if we ought to load this member.
|
|
*/
|
|
|
|
static int
|
|
subfile_wanted_p(entry)
|
|
struct file_entry *entry;
|
|
{
|
|
struct localsymbol *lsp, *lspend;
|
|
#ifdef DOLLAR_KLUDGE
|
|
register int dollar_cond = 0;
|
|
#endif
|
|
|
|
lspend = entry->symbols + entry->nsymbols;
|
|
|
|
for (lsp = entry->symbols; lsp < lspend; lsp++) {
|
|
register struct nlist *p = &lsp->nzlist.nlist;
|
|
register int type = p->n_type;
|
|
register char *name = p->n_un.n_strx + entry->strings;
|
|
register symbol *sp = getsym_soft(name);
|
|
|
|
/*
|
|
* If the symbol has an interesting definition, we could
|
|
* potentially want it.
|
|
*/
|
|
if (! (type & N_EXT)
|
|
|| (type == (N_UNDF | N_EXT) && p->n_value == 0
|
|
|
|
#ifdef DOLLAR_KLUDGE
|
|
&& name[1] != '$'
|
|
#endif
|
|
)
|
|
#ifdef SET_ELEMENT_P
|
|
|| SET_ELEMENT_P(type)
|
|
|| set_element_prefixed_p(name)
|
|
#endif
|
|
)
|
|
continue;
|
|
|
|
|
|
#ifdef DOLLAR_KLUDGE
|
|
if (name[1] == '$') {
|
|
sp = getsym_soft(&name[2]);
|
|
dollar_cond = 1;
|
|
if (!sp)
|
|
continue;
|
|
if (sp->flags & SP_REFERENCED) {
|
|
if (write_map) {
|
|
print_file_name(entry, stdout);
|
|
fprintf(stdout, " needed due to $-conditional %s\n", name);
|
|
}
|
|
return 1;
|
|
}
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* If this symbol has not been hashed, we can't be
|
|
* looking for it.
|
|
*/
|
|
|
|
if (!sp)
|
|
continue;
|
|
|
|
/*
|
|
* We don't load a file if it merely satisfies a
|
|
* common reference (see explanation above in
|
|
* symdef_library()).
|
|
*/
|
|
if ((sp->flags & GS_REFERENCED) && !sp->defined) {
|
|
/*
|
|
* This is a symbol we are looking for. It
|
|
* is either not yet defined or defined as a
|
|
* common.
|
|
*/
|
|
#ifdef DOLLAR_KLUDGE
|
|
if (dollar_cond)
|
|
continue;
|
|
#endif
|
|
if (type == (N_UNDF | N_EXT)) {
|
|
/*
|
|
* Symbol being defined as common.
|
|
* Remember this, but don't load
|
|
* subfile just for this.
|
|
*/
|
|
|
|
/*
|
|
* If it didn't used to be common, up
|
|
* the count of common symbols.
|
|
*/
|
|
if (!sp->common_size)
|
|
common_defined_global_count++;
|
|
|
|
if (sp->common_size < p->n_value)
|
|
sp->common_size = p->n_value;
|
|
if (!sp->defined)
|
|
undefined_global_sym_count--;
|
|
sp->defined = type;
|
|
continue;
|
|
}
|
|
if (sp->flags & GS_WEAK)
|
|
/* Weak symbols don't pull archive members */
|
|
continue;
|
|
if (write_map) {
|
|
print_file_name(entry, stdout);
|
|
fprintf(stdout, " needed due to %s\n", sp->name);
|
|
}
|
|
return 1;
|
|
|
|
} else if (!sp->defined && sp->sorefs) {
|
|
/*
|
|
* Check for undefined symbols or commons
|
|
* in shared objects.
|
|
*/
|
|
struct localsymbol *lsp;
|
|
|
|
for (lsp = sp->sorefs; lsp; lsp = lsp->next) {
|
|
int type = lsp->nzlist.nlist.n_type;
|
|
if ( (type & N_EXT) &&
|
|
(type & N_STAB) == 0 &&
|
|
type != (N_UNDF | N_EXT))
|
|
break; /* We don't need it */
|
|
}
|
|
if (lsp != NULL)
|
|
/*
|
|
* We have a worthy definition in a shared
|
|
* object that was specified ahead of the
|
|
* archive we're examining now. So, punt.
|
|
*/
|
|
continue;
|
|
|
|
/*
|
|
* At this point, we have an undefined shared
|
|
* object reference. Again, if the archive member
|
|
* defines a common we just note the its size.
|
|
* Otherwise, the member gets included.
|
|
*/
|
|
|
|
if (type == (N_UNDF|N_EXT) && p->n_value) {
|
|
/*
|
|
* New symbol is common, just takes its
|
|
* size, but don't load.
|
|
*/
|
|
sp->common_size = p->n_value;
|
|
sp->defined = type;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* THIS STILL MISSES the case where one shared
|
|
* object defines a common and the next defines
|
|
* more strongly; fix this someday by making
|
|
* `struct glosym' and enter_global_ref() more
|
|
* symmetric.
|
|
*/
|
|
|
|
if (write_map) {
|
|
print_file_name(entry, stdout);
|
|
fprintf(stdout,
|
|
" needed due to shared lib ref %s (%d)\n",
|
|
sp->name,
|
|
lsp ? lsp->nzlist.nlist.n_type : -1);
|
|
}
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Read the symbols of dynamic entity ENTRY into core. Assume it is already
|
|
* open, on descriptor FD.
|
|
*/
|
|
void
|
|
read_shared_object(fd, entry)
|
|
struct file_entry *entry;
|
|
int fd;
|
|
{
|
|
struct _dynamic dyn;
|
|
struct section_dispatch_table sdt;
|
|
struct nlist *np;
|
|
struct nzlist *nzp;
|
|
int n, i, has_nz = 0;
|
|
|
|
if (!(entry->flags & E_HEADER_VALID))
|
|
read_header(fd, entry);
|
|
|
|
/* Read DYNAMIC structure (first in data segment) */
|
|
if (lseek(fd, text_offset(entry) + entry->header.a_text, L_SET) ==
|
|
(off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
if (read(fd, &dyn, sizeof dyn) != sizeof dyn) {
|
|
errx(1, "%s: premature EOF reading _dynamic",
|
|
get_file_name(entry));
|
|
}
|
|
md_swapin__dynamic(&dyn);
|
|
|
|
/* Check version */
|
|
switch (dyn.d_version) {
|
|
default:
|
|
errx(1, "%s: unsupported _DYNAMIC version: %d",
|
|
get_file_name(entry), dyn.d_version);
|
|
break;
|
|
case LD_VERSION_SUN:
|
|
break;
|
|
case LD_VERSION_BSD:
|
|
has_nz = 1;
|
|
break;
|
|
}
|
|
|
|
/* Read Section Dispatch Table (from data segment) */
|
|
if (lseek(fd,
|
|
text_offset(entry) + (long)dyn.d_un.d_sdt -
|
|
(DATA_START(entry->header) - N_DATOFF(entry->header)),
|
|
L_SET) == (off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
if (read(fd, &sdt, sizeof sdt) != sizeof sdt)
|
|
errx(1, "%s: premature EOF reading sdt",
|
|
get_file_name(entry));
|
|
md_swapin_section_dispatch_table(&sdt);
|
|
|
|
/* Read symbols (text segment) */
|
|
n = sdt.sdt_strings - sdt.sdt_nzlist;
|
|
entry->nsymbols = n /
|
|
(has_nz ? sizeof(struct nzlist) : sizeof(struct nlist));
|
|
nzp = (struct nzlist *)(np = (struct nlist *)alloca (n));
|
|
entry->symbols = (struct localsymbol *)
|
|
xmalloc(entry->nsymbols * sizeof(struct localsymbol));
|
|
|
|
if (lseek(fd,
|
|
text_offset(entry) + (long)sdt.sdt_nzlist -
|
|
(TEXT_START(entry->header) - N_TXTOFF(entry->header)),
|
|
L_SET) == (off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
if (read(fd, (char *)nzp, n) != n)
|
|
errx(1, "%s: premature EOF reading symbols ",
|
|
get_file_name(entry));
|
|
|
|
if (has_nz)
|
|
md_swapin_zsymbols(nzp, entry->nsymbols);
|
|
else
|
|
md_swapin_symbols(np, entry->nsymbols);
|
|
|
|
/* Convert to structs localsymbol */
|
|
for (i = 0; i < entry->nsymbols; i++) {
|
|
if (has_nz) {
|
|
entry->symbols[i].nzlist = *nzp++;
|
|
} else {
|
|
entry->symbols[i].nzlist.nlist = *np++;
|
|
entry->symbols[i].nzlist.nz_size = 0;
|
|
}
|
|
entry->symbols[i].symbol = NULL;
|
|
entry->symbols[i].next = NULL;
|
|
entry->symbols[i].entry = entry;
|
|
entry->symbols[i].gotslot_offset = -1;
|
|
entry->symbols[i].flags = 0;
|
|
}
|
|
|
|
/* Read strings (text segment) */
|
|
n = entry->string_size = sdt.sdt_str_sz;
|
|
entry->strings = (char *)alloca(n);
|
|
entry->strings_offset = text_offset(entry) + sdt.sdt_strings;
|
|
if (lseek(fd,
|
|
entry->strings_offset -
|
|
(TEXT_START(entry->header) - N_TXTOFF(entry->header)),
|
|
L_SET) == (off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
if (read(fd, entry->strings, n) != n)
|
|
errx(1, "%s: premature EOF reading strings",
|
|
get_file_name(entry));
|
|
enter_file_symbols (entry);
|
|
entry->strings = 0;
|
|
|
|
/*
|
|
* Load any subsidiary shared objects.
|
|
*/
|
|
if (sdt.sdt_sods) {
|
|
struct sod sod;
|
|
off_t offset;
|
|
struct file_entry *prev = NULL;
|
|
|
|
offset = (off_t)sdt.sdt_sods;
|
|
while (1) {
|
|
struct file_entry *subentry;
|
|
char *libname, name[MAXPATHLEN]; /*XXX*/
|
|
|
|
subentry = (struct file_entry *)
|
|
xmalloc(sizeof(struct file_entry));
|
|
bzero(subentry, sizeof(struct file_entry));
|
|
subentry->superfile = entry;
|
|
subentry->flags = E_SECONDCLASS;
|
|
|
|
if (lseek(fd,
|
|
offset - (TEXT_START(entry->header) -
|
|
N_TXTOFF(entry->header)),
|
|
L_SET) == (off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
if (read(fd, &sod, sizeof(sod)) != sizeof(sod))
|
|
errx(1, "%s: premature EOF reding sod",
|
|
get_file_name(entry));
|
|
md_swapin_sod(&sod, 1);
|
|
if (lseek(fd,
|
|
(off_t)sod.sod_name - (TEXT_START(entry->header) -
|
|
N_TXTOFF(entry->header)),
|
|
L_SET) == (off_t)-1)
|
|
err(1, "%s: lseek", get_file_name(entry));
|
|
(void)read(fd, name, sizeof(name)); /*XXX*/
|
|
if (sod.sod_library) {
|
|
int sod_major = sod.sod_major;
|
|
int sod_minor = sod.sod_minor;
|
|
|
|
libname = findshlib(name,
|
|
&sod_major, &sod_minor, 0);
|
|
if (libname == NULL)
|
|
errx(1,"no shared -l%s.%d.%d available",
|
|
name, sod.sod_major, sod.sod_minor);
|
|
subentry->filename = libname;
|
|
subentry->local_sym_name = concat("-l", name, "");
|
|
} else {
|
|
subentry->filename = strdup(name);
|
|
subentry->local_sym_name = strdup(name);
|
|
}
|
|
read_file_symbols(subentry);
|
|
|
|
if (prev)
|
|
prev->chain = subentry;
|
|
else
|
|
entry->subfiles = subentry;
|
|
prev = subentry;
|
|
fd = file_open(entry);
|
|
if ((offset = (off_t)sod.sod_next) == 0)
|
|
break;
|
|
}
|
|
}
|
|
#ifdef SUN_COMPAT
|
|
if (link_mode & SILLYARCHIVE) {
|
|
char *cp, *sa_name;
|
|
char armag[SARMAG];
|
|
int fd;
|
|
struct file_entry *subentry;
|
|
|
|
sa_name = strdup(entry->filename);
|
|
if (sa_name == NULL)
|
|
goto out;
|
|
cp = sa_name + strlen(sa_name) - 1;
|
|
while (cp > sa_name) {
|
|
if (!isdigit(*cp) && *cp != '.')
|
|
break;
|
|
--cp;
|
|
}
|
|
if (cp <= sa_name || *cp != 'o') {
|
|
/* Not in `libxxx.so.n.m' form */
|
|
free(sa_name);
|
|
goto out;
|
|
}
|
|
|
|
*cp = 'a';
|
|
if ((fd = open(sa_name, O_RDONLY, 0)) < 0)
|
|
goto out;
|
|
|
|
/* Read archive magic */
|
|
bzero(armag, SARMAG);
|
|
(void)read(fd, armag, SARMAG);
|
|
(void)close(fd);
|
|
if (strncmp(armag, ARMAG, SARMAG) != 0) {
|
|
warnx("%s: malformed silly archive",
|
|
get_file_name(entry));
|
|
goto out;
|
|
}
|
|
|
|
subentry = (struct file_entry *)
|
|
xmalloc(sizeof(struct file_entry));
|
|
bzero(subentry, sizeof(struct file_entry));
|
|
|
|
entry->silly_archive = subentry;
|
|
subentry->superfile = entry;
|
|
subentry->filename = sa_name;
|
|
subentry->local_sym_name = sa_name;
|
|
subentry->flags |= E_IS_LIBRARY;
|
|
search_library(file_open(subentry), subentry);
|
|
out:
|
|
;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#undef major
|
|
#undef minor
|
|
|
|
int
|
|
findlib(p)
|
|
struct file_entry *p;
|
|
{
|
|
int i;
|
|
int fd = -1;
|
|
int major = -1, minor = -1;
|
|
char *cp, *fname = NULL;
|
|
|
|
if (!(p->flags & E_SEARCH_DYNAMIC))
|
|
goto dot_a;
|
|
|
|
fname = findshlib(p->filename, &major, &minor, 1);
|
|
|
|
if (fname && (fd = open(fname, O_RDONLY, 0)) > 0) {
|
|
p->filename = fname;
|
|
p->lib_major = major;
|
|
p->lib_minor = minor;
|
|
p->flags &= ~E_SEARCH_DIRS;
|
|
return fd;
|
|
}
|
|
(void)free(fname);
|
|
|
|
dot_a:
|
|
p->flags &= ~E_SEARCH_DYNAMIC;
|
|
if (cp = strrchr(p->filename, '/')) {
|
|
*cp++ = '\0';
|
|
fname = concat(concat(p->filename, "/lib", cp), ".a", "");
|
|
*(--cp) = '/';
|
|
} else
|
|
fname = concat("lib", p->filename, ".a");
|
|
|
|
for (i = 0; i < n_search_dirs; i++) {
|
|
register char *path
|
|
= concat(search_dirs[i], "/", fname);
|
|
fd = open(path, O_RDONLY, 0);
|
|
if (fd > 0) {
|
|
p->filename = path;
|
|
p->flags &= ~E_SEARCH_DIRS;
|
|
break;
|
|
}
|
|
(void)free(path);
|
|
}
|
|
(void)free(fname);
|
|
return fd;
|
|
}
|
|
|