1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2 #pragma once
3 
4 #include <dlfcn.h>
5 
6 #include "macro.h"
7 
8 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(void*, dlclose, NULL);
9 
10 int dlsym_many_or_warn_sentinel(void *dl, int log_level, ...) _sentinel_;
11 int dlopen_many_sym_or_warn_sentinel(void **dlp, const char *filename, int log_level, ...) _sentinel_;
12 
13 #define dlsym_many_or_warn(dl, log_level, ...) \
14         dlsym_many_or_warn_sentinel(dl, log_level, __VA_ARGS__, NULL)
15 #define dlopen_many_sym_or_warn(dlp, filename, log_level, ...) \
16         dlopen_many_sym_or_warn_sentinel(dlp, filename, log_level, __VA_ARGS__, NULL)
17 
18 /* Macro useful for putting together variable/symbol name pairs when calling dlsym_many_or_warn(). Assumes
19  * that each library symbol to resolve will be placed in a variable with the "sym_" prefix, i.e. a symbol
20  * "foobar" is loaded into a variable "sym_foobar". */
21 #define DLSYM_ARG(arg) \
22         &sym_##arg, STRINGIFY(arg)
23