mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
45e4762c2c
* dlfcn/Makefile (tests): Add tst-dlinfo. ($(objpfx)tst-dlinfo): New target. * dlfcn/dlinfo.c: New file. * dlfcn/Makefile (libdl-routines): Add it. * dlfcn/Versions (libdl: GLIBC_2.3.3): Add dlinfo. * dlfcn/dlfcn.h [__USE_GNU]: Declare dlinfo. [__USE_GNU] (RTLD_DI_*): New enum constants. [__USE_GNU] (Dl_serpath, Dl_serinfo): New types. * elf/dl-load.c (cache_rpath): New inline function. (_dl_map_object): Use it. (_dl_rtld_di_serinfo): New function. * sysdeps/generic/ldsodefs.h: Declare it. * elf/Versions (ld: GLIBC_PRIVATE): Add it.
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/* dlinfo -- Get information from the dynamic linker.
|
|
Copyright (C) 2003 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <dlfcn.h>
|
|
#include <link.h>
|
|
#include <ldsodefs.h>
|
|
#include <libintl.h>
|
|
|
|
struct dlinfo_args
|
|
{
|
|
ElfW(Addr) caller;
|
|
void *handle;
|
|
int request;
|
|
void *arg;
|
|
};
|
|
|
|
static void
|
|
dlinfo_doit (void *argsblock)
|
|
{
|
|
struct dlinfo_args *const args = argsblock;
|
|
struct link_map *l = args->handle;
|
|
|
|
#if 0
|
|
if (args->handle == RTLD_SELF)
|
|
{
|
|
|
|
/* Find the highest-addressed object that CALLER is not below. */
|
|
for (l = GL(dl_loaded); l != NULL; l = l->l_next)
|
|
if (caller >= l->l_map_start && caller < l->l_map_end)
|
|
/* There must be exactly one DSO for the range of the virtual
|
|
memory. Otherwise something is really broken. */
|
|
break;
|
|
|
|
if (l == NULL)
|
|
_dl_signal_error (0, NULL, NULL, N_("\
|
|
RTLD_SELF used in code not dynamically loaded"));
|
|
}
|
|
#endif
|
|
|
|
switch (args->request)
|
|
{
|
|
case RTLD_DI_LMID:
|
|
case RTLD_DI_CONFIGADDR:
|
|
default:
|
|
_dl_signal_error (0, NULL, NULL, N_("unsupported dlinfo request"));
|
|
break;
|
|
|
|
case RTLD_DI_LINKMAP:
|
|
*(struct link_map **) args->arg = l;
|
|
break;
|
|
|
|
case RTLD_DI_SERINFO:
|
|
_dl_rtld_di_serinfo (l, args->arg, false);
|
|
break;
|
|
case RTLD_DI_SERINFOSIZE:
|
|
_dl_rtld_di_serinfo (l, args->arg, true);
|
|
break;
|
|
|
|
case RTLD_DI_ORIGIN:
|
|
strcpy (args->arg, l->l_origin);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
dlinfo (void *handle, int request, void *arg)
|
|
{
|
|
struct dlinfo_args args = { (ElfW(Addr)) RETURN_ADDRESS (0),
|
|
handle, request, arg };
|
|
return _dlerror_run (&dlinfo_doit, &args) ? -1 : 0;
|
|
}
|