From 32612615c58b394c3eb09f020f31310797ad3854 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 24 Jan 2022 10:46:17 -0300 Subject: elf: Issue la_symbind for bind-now (BZ #23734) The audit symbind callback is not called for binaries built with -Wl,-z,now or when LD_BIND_NOW=1 is used, nor the PLT tracking callbacks (plt_enter and plt_exit) since this would change the expected program semantics (where no PLT is expected) and would have performance implications (such as for BZ#15533). LAV_CURRENT is also bumped to indicate the audit ABI change (where la_symbind flags are set by the loader to indicate no possible PLT trace). To handle powerpc64 ELFv1 function descriptor, _dl_audit_symbind requires to know whether bind-now is used so the symbol value is updated to function text segment instead of the OPD (for lazy binding this is done by PPC64_LOAD_FUNCPTR on _dl_runtime_resolve). Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, powerpc64-linux-gnu. Reviewed-by: Carlos O'Donell Tested-by: Carlos O'Donell --- elf/tst-audit25mod3.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 elf/tst-audit25mod3.c (limited to 'elf/tst-audit25mod3.c') diff --git a/elf/tst-audit25mod3.c b/elf/tst-audit25mod3.c new file mode 100644 index 0000000000..af83e89190 --- /dev/null +++ b/elf/tst-audit25mod3.c @@ -0,0 +1,22 @@ +/* Module used by tst-audit25. + 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 + . */ + +void +tst_audit25mod3_func1 (void) +{ +} -- cgit 1.4.1