From c089fd80c793b1a987e1a6e9a08248b0861ec7ed Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 23 Nov 2018 07:30:56 -0800 Subject: x86/CET: Add a re-exec test with legacy bitmap Add a re-exec test with legacy bitmap to verify that legacy bitmap is properly hanlded by kernel. * sysdeps/x86/Makefile (tests): Add tst-cet-legacy-1a. (tst-cet-legacy-1a-ARGS): New. ($(objpfx)tst-cet-legacy-1a): New target. * sysdeps/x86/tst-cet-legacy-1a.c: New file. --- sysdeps/x86/Makefile | 7 +++- sysdeps/x86/tst-cet-legacy-1a.c | 81 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 86 insertions(+), 2 deletions(-) create mode 100644 sysdeps/x86/tst-cet-legacy-1a.c (limited to 'sysdeps') diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile index f2fd031ac7..7ec46ca100 100644 --- a/sysdeps/x86/Makefile +++ b/sysdeps/x86/Makefile @@ -18,8 +18,9 @@ ifeq ($(enable-cet),yes) ifeq ($(subdir),elf) sysdep-dl-routines += dl-cet -tests += tst-cet-legacy-1 tst-cet-legacy-2 tst-cet-legacy-2a \ - tst-cet-legacy-3 tst-cet-legacy-4 +tests += tst-cet-legacy-1 tst-cet-legacy-1a tst-cet-legacy-2 \ + tst-cet-legacy-2a tst-cet-legacy-3 tst-cet-legacy-4 +tst-cet-legacy-1a-ARGS = -- $(host-test-program-cmd) ifneq (no,$(have-tunables)) tests += tst-cet-legacy-4a tst-cet-legacy-4b tst-cet-legacy-4c endif @@ -38,6 +39,8 @@ CFLAGS-tst-cet-legacy-mod-4.c += -fcf-protection=none $(objpfx)tst-cet-legacy-1: $(objpfx)tst-cet-legacy-mod-1.so \ $(objpfx)tst-cet-legacy-mod-2.so +$(objpfx)tst-cet-legacy-1a: $(objpfx)tst-cet-legacy-mod-1.so \ + $(objpfx)tst-cet-legacy-mod-2.so $(objpfx)tst-cet-legacy-2: $(objpfx)tst-cet-legacy-mod-2.so $(libdl) $(objpfx)tst-cet-legacy-2.out: $(objpfx)tst-cet-legacy-mod-1.so $(objpfx)tst-cet-legacy-2a: $(objpfx)tst-cet-legacy-mod-2.so $(libdl) diff --git a/sysdeps/x86/tst-cet-legacy-1a.c b/sysdeps/x86/tst-cet-legacy-1a.c new file mode 100644 index 0000000000..8fde2968e8 --- /dev/null +++ b/sysdeps/x86/tst-cet-legacy-1a.c @@ -0,0 +1,81 @@ +/* Test for re-exec with legacy bitmap. + Copyright (C) 2018 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 + . */ + +#include +#include +#include +#include +#include + +/* Nonzero if the program gets called via `exec'. */ +static int restart; + +#define CMDLINE_OPTIONS \ + { "restart", no_argument, &restart, 1 }, + +extern int do_test (int argc, char *argv[]); + +extern int in_dso_1 (void); +extern int in_dso_2 (void); + +static int +check (void) +{ + if (in_dso_1 () != 0x1234678) + { + puts ("in_dso_1 () != 0x1234678"); + exit (1); + } + + if (in_dso_2 () != 0xbadbeef) + { + puts ("in_dso_2 () != 0xbadbeef"); + exit (1); + } + + return 0; +} + +int +do_test (int argc, char *argv[]) +{ + /* We must have + - one or four parameters left if called initially + + path for ld.so optional + + "--library-path" optional + + the library path optional + + the application name + */ + + if (restart) + return check (); + + if (argc != 2 && argc != 5) + FAIL_EXIT1 ("wrong number of arguments (%d)", argc); + + if (argc == 5) + execl (argv[1], argv[1], argv[2], argv[3], argv[4], "--direct", + "--restart", NULL); + else + execl (argv[1], argv[1], "--direct", "--restart", NULL); + + return -1; +} + +#define TEST_FUNCTION_ARGV do_test +#include -- cgit 1.4.1