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/* dlopen -- Load a shared object at run time.
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <stddef.h>
#include <link.h>
#include <dlfcn.h>
void *
dlopen (const char *file, int mode)
{
struct link_map *new, *l;
void doit (void)
{
Elf32_Addr init;
new = _dl_map_object (_dl_loaded, file);
/* Map in any dependencies. */
for (l = new; l; l = l->l_next)
if (! l->l_deps_loaded)
{
if (l->l_info[DT_NEEDED])
{
const char *strtab
= (void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr;
const Elf32_Dyn *d;
for (d = l->l_ld; d->d_tag != DT_NULL; ++d)
if (d->d_tag == DT_NEEDED)
_dl_map_object (l, strtab + d->d_un.d_val);
}
l->l_deps_loaded = 1;
}
/* Relocate the objects loaded. */
for (l = new; l; l = l->l_next)
if (! l->l_relocated)
_dl_relocate_object (l, mode == RTLD_LAZY);
/* Run the initializer functions of new objects. */
while (init = _dl_init_next ())
(*(void (*) (void)) init) ();
}
return _dlerror_run (doit) ? NULL : new;
}
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