/* Load a shared object at run time. Copyright (C) 1995-2013 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 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 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 <http://www.gnu.org/licenses/>. */ #include <dlfcn.h> #include <libintl.h> #include <stddef.h> #include <unistd.h> #include <ldsodefs.h> #if !defined SHARED && defined IS_IN_libdl void * dlopen (const char *file, int mode) { return __dlopen (file, mode, RETURN_ADDRESS (0)); } static_link_warning (dlopen) #else 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 # else # define NS LM_ID_BASE # endif static void dlopen_doit (void *a) { struct dlopen_args *args = (struct dlopen_args *) a; if (args->mode & ~(RTLD_BINDING_MASK | RTLD_NOLOAD | RTLD_DEEPBIND | RTLD_GLOBAL | RTLD_LOCAL | RTLD_NODELETE | __RTLD_SPROF)) GLRO(dl_signal_error) (0, NULL, NULL, _("invalid mode parameter")); args->new = GLRO(dl_open) (args->file ?: "", args->mode | __RTLD_DLOPEN, args->caller, args->file == NULL ? LM_ID_BASE : NS, __dlfcn_argc, __dlfcn_argv, __environ); } void * __dlopen (const char *file, int mode DL_CALLER_DECL) { # ifdef SHARED if (__builtin_expect (_dlfcn_hook != NULL, 0)) return _dlfcn_hook->dlopen (file, mode, DL_CALLER); # endif struct dlopen_args args; args.file = file; args.mode = mode; args.caller = DL_CALLER; # ifdef SHARED return _dlerror_run (dlopen_doit, &args) ? NULL : args.new; # else if (_dlerror_run (dlopen_doit, &args)) return NULL; __libc_register_dl_open_hook ((struct link_map *) args.new); __libc_register_dlfcn_hook ((struct link_map *) args.new); return args.new; # endif } # ifdef SHARED # include <shlib-compat.h> strong_alias (__dlopen, __dlopen_check) versioned_symbol (libdl, __dlopen_check, dlopen, GLIBC_2_1); # endif #endif