diff options
Diffstat (limited to 'REORG.TODO/dlfcn/dlopenold.c')
-rw-r--r-- | REORG.TODO/dlfcn/dlopenold.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/REORG.TODO/dlfcn/dlopenold.c b/REORG.TODO/dlfcn/dlopenold.c new file mode 100644 index 0000000000..a3db500705 --- /dev/null +++ b/REORG.TODO/dlfcn/dlopenold.c @@ -0,0 +1,79 @@ +/* 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 <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 +#else +# define NS LM_ID_BASE +#endif + + +static void +dlopen_doit (void *a) +{ + struct dlopen_args *args = (struct dlopen_args *) a; + + 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); +} + +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 (__glibc_unlikely (_dlfcn_hook != NULL)) + return _dlfcn_hook->dlopen (file, mode, RETURN_ADDRESS (0)); + + return _dlerror_run (dlopen_doit, &args) ? NULL : args.new; +} +compat_symbol (libdl, __dlopen_nocheck, dlopen, GLIBC_2_0); +#endif |