mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
bc56ab1f4a
When audit modules are loaded, ld.so initialization is not yet complete, and rtld_active () returns false even though ld.so is mostly working. Instead, the static dlopen hook is used, but that does not work at all because this is not a static dlopen situation. Commit466c1ea15f("dlfcn: Rework static dlopen hooks") moved the hook pointer into _rtld_global_ro, which means that separate protection is not needed anymore and the hook pointer can be checked directly. The guard for disabling libio vtable hardening in _IO_vtable_check should stay for now. Fixes commit8e1472d2c1("ld.so: Examine GLRO to detect inactive loader [BZ #20204]"). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> (cherry picked from commit8dcb6d0af0)
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* Check the usability of <dlfcn.h> functions in audit modules.
|
|
Copyright (C) 2022 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <gnu/lib-names.h>
|
|
|
|
#include <support/check.h>
|
|
#include <support/xdlfcn.h>
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
/* Check that the audit module has been loaded. */
|
|
void *handle = xdlopen ("mapped to libc", RTLD_LOCAL | RTLD_NOW);
|
|
TEST_VERIFY (handle
|
|
== xdlopen (LIBC_SO, RTLD_LOCAL | RTLD_NOW | RTLD_NOLOAD));
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|