1 /* dlinfo -- Get information from the dynamic linker.
2 Copyright (C) 2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
34 dlinfo_doit (void *argsblock)
36 struct dlinfo_args *const args = argsblock;
37 struct link_map *l = args->handle;
40 if (args->handle == RTLD_SELF)
43 /* Find the highest-addressed object that CALLER is not below. */
44 for (l = GL(dl_loaded); l != NULL; l = l->l_next)
45 if (caller >= l->l_map_start && caller < l->l_map_end)
46 /* There must be exactly one DSO for the range of the virtual
47 memory. Otherwise something is really broken. */
51 _dl_signal_error (0, NULL, NULL, N_("\
52 RTLD_SELF used in code not dynamically loaded"));
56 switch (args->request)
59 case RTLD_DI_CONFIGADDR:
61 _dl_signal_error (0, NULL, NULL, N_("unsupported dlinfo request"));
65 *(struct link_map **) args->arg = l;
69 _dl_rtld_di_serinfo (l, args->arg, false);
71 case RTLD_DI_SERINFOSIZE:
72 _dl_rtld_di_serinfo (l, args->arg, true);
76 strcpy (args->arg, l->l_origin);
82 dlinfo (void *handle, int request, void *arg)
84 struct dlinfo_args args = { (ElfW(Addr)) RETURN_ADDRESS (0),
85 handle, request, arg };
86 return _dlerror_run (&dlinfo_doit, &args) ? -1 : 0;