1/* Locate the shared object symbol nearest a given address.
2 Copyright (C) 2003-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <dlfcn.h>
20#include <ldsodefs.h>
21
22#if !defined SHARED && IS_IN (libdl)
23
24int
25dladdr1 (const void *address, Dl_info *info, void **extra, int flags)
26{
27 return __dladdr1 (address, info, extra, flags);
28}
29
30#else
31
32int
33__dladdr1 (const void *address, Dl_info *info, void **extra, int flags)
34{
35# ifdef SHARED
36 if (!rtld_active ())
37 return _dlfcn_hook->dladdr1 (address, info, extra, flags);
38# endif
39
40 switch (flags)
41 {
42 default: /* Make this an error? */
43 case 0:
44 return _dl_addr (address, info, NULL, NULL);
45 case RTLD_DL_SYMENT:
46 return _dl_addr (address, info, NULL, (const ElfW(Sym) **) extra);
47 case RTLD_DL_LINKMAP:
48 return _dl_addr (address, info, (struct link_map **) extra, NULL);
49 }
50}
51# ifdef SHARED
52strong_alias (__dladdr1, dladdr1)
53# endif
54#endif
55