63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* dlopen -- Load a shared object at run time.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <stddef.h>
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#include <link.h>
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#include <dlfcn.h>
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void *
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dlopen (const char *file, dl_open_mode mode)
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{
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struct link_map *new, *l;
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void doit (void)
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{
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Elf32_Addr init;
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new = _dl_map_object (_dl_loaded, file, NULL);
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/* Map in any dependencies. */
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for (l = new; l; l = l->l_next)
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if (! l->l_deps_loaded)
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{
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if (l->l_info[DT_NEEDED])
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{
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const char *strtab
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= (void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr;
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const Elf32_Dyn *d;
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for (d = l->l_ld; d->d_tag != DT_NULL; ++d)
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if (d->d_tag == DT_NEEDED)
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_dl_map_object (l, strtab + d->d_un.d_val, NULL);
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}
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l->l_deps_loaded = 1;
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}
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/* Relocate the objects loaded. */
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for (l = new; l; l = l->l_next)
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if (! l->l_relocated)
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_dl_relocate_object (l, mode == RTLD_LAZY);
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/* Run the initializer functions of new objects. */
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while (init = _dl_init_next ())
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(*(void (*) (void)) init) ();
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}
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return _dlerror_run (doit) ? NULL : new;
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}
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