diff options
Diffstat (limited to 'REORG.TODO/dlfcn/dlopen.c')
-rw-r--r-- | REORG.TODO/dlfcn/dlopen.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/REORG.TODO/dlfcn/dlopen.c b/REORG.TODO/dlfcn/dlopen.c new file mode 100644 index 0000000000..22120655d2 --- /dev/null +++ b/REORG.TODO/dlfcn/dlopen.c @@ -0,0 +1,103 @@ +/* Load a shared object at run time. + Copyright (C) 1995-2017 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 && 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)) + _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 (__glibc_unlikely (_dlfcn_hook != NULL)) + 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 |