projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 45e4762c RM |
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. | |
| 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, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #include <dlfcn.h> | |
| 21 | #include <link.h> | |
| 22 | #include <ldsodefs.h> | |
| 23 | #include <libintl.h> | |
| 24 | ||
| 25 | struct dlinfo_args | |
| 26 | { | |
| 27 | ElfW(Addr) caller; | |
| 28 | void *handle; | |
| 29 | int request; | |
| 30 | void *arg; | |
| 31 | }; | |
| 32 | ||
| 33 | static void | |
| 34 | dlinfo_doit (void *argsblock) | |
| 35 | { | |
| 36 | struct dlinfo_args *const args = argsblock; | |
| 37 | struct link_map *l = args->handle; | |
| 38 | ||
| 39 | #if 0 | |
| 40 | if (args->handle == RTLD_SELF) | |
| 41 | { | |
| 42 | ||
| 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. */ | |
| 48 | break; | |
| 49 | ||
| 50 | if (l == NULL) | |
| 51 | _dl_signal_error (0, NULL, NULL, N_("\ | |
| 52 | RTLD_SELF used in code not dynamically loaded")); | |
| 53 | } | |
| 54 | #endif | |
| 55 | ||
| 56 | switch (args->request) | |
| 57 | { | |
| 58 | case RTLD_DI_LMID: | |
| 59 | case RTLD_DI_CONFIGADDR: | |
| 60 | default: | |
| 61 | _dl_signal_error (0, NULL, NULL, N_("unsupported dlinfo request")); | |
| 62 | break; | |
| 63 | ||
| 64 | case RTLD_DI_LINKMAP: | |
| 65 | *(struct link_map **) args->arg = l; | |
| 66 | break; | |
| 67 | ||
| 68 | case RTLD_DI_SERINFO: | |
| 69 | _dl_rtld_di_serinfo (l, args->arg, false); | |
| 70 | break; | |
| 71 | case RTLD_DI_SERINFOSIZE: | |
| 72 | _dl_rtld_di_serinfo (l, args->arg, true); | |
| 73 | break; | |
| 74 | ||
| 75 | case RTLD_DI_ORIGIN: | |
| 76 | strcpy (args->arg, l->l_origin); | |
| 77 | break; | |
| 78 | } | |
| 79 | } | |
| 80 | ||
| 81 | int | |
| 82 | dlinfo (void *handle, int request, void *arg) | |
| 83 | { | |
| 84 | struct dlinfo_args args = { (ElfW(Addr)) RETURN_ADDRESS (0), | |
| 85 | handle, request, arg }; | |
| 86 | return _dlerror_run (&dlinfo_doit, &args) ? -1 : 0; | |
| 87 | } |