blob: 4a133a5c1d25fd6466b9b03e4a99d9f65a048693 [file] [log] [blame]
/* Load a shared object at run time.
Copyright (C) 1995-2014 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<>. */
#include <dlfcn.h>
#include <stddef.h>
#include <unistd.h>
#include <ldsodefs.h>
/* This file is for compatibility with glibc 2.0. Compile it only if
versioning is used. */
#include <shlib-compat.h>
#if SHLIB_COMPAT (libdl, GLIBC_2_0, GLIBC_2_1)
struct dlopen_args
/* The arguments for dlopen_doit. */
const char *file;
int mode;
/* The return value of dlopen_doit. */
void *new;
/* Address of the caller. */
const void *caller;
/* Non-shared code has no support for multiple namespaces. */
#ifdef SHARED
# define NS __LM_ID_CALLER
# define NS LM_ID_BASE
static void
dlopen_doit (void *a)
struct dlopen_args *args = (struct dlopen_args *) a;
args->new = GLRO(dl_open) (args->file ?: "", 0, args->mode | __RTLD_DLOPEN,
args->file == NULL ? LM_ID_BASE : NS,
__dlfcn_argc, __dlfcn_argv, __environ);
extern void *__dlopen_nocheck (const char *file, int mode);
void *
__dlopen_nocheck (const char *file, int mode)
struct dlopen_args args;
args.file = file;
args.caller = RETURN_ADDRESS (0);
if ((mode & RTLD_BINDING_MASK) == 0)
/* By default assume RTLD_LAZY. */
mode |= RTLD_LAZY;
args.mode = mode;
if (__builtin_expect (_dlfcn_hook != NULL, 0))
return _dlfcn_hook->dlopen (file, mode, RETURN_ADDRESS (0));
return _dlerror_run (dlopen_doit, &args) ? NULL :;
compat_symbol (libdl, __dlopen_nocheck, dlopen, GLIBC_2_0);