mirror of git://sourceware.org/git/glibc.git
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* Basic tests for sealing.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/xdlfcn.h>
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#include <support/xthread.h>
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#include <gnu/lib-names.h>
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#include "tst-dl_mseal-common.h"
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/* Check if memory sealing works as expected on multiples places:
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- On the binary itself.
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- On a LD_PRELOAD library.
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- On a dependency modules (tst-dl_mseal-mod-{1,2}.so).
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- On a audit modules (tst-dl_mseal-auditmod.so).
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- On a dlopen dependency opened with RTLD_NODELETE
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(tst-dl_mseal-dlopen-{2,2-1}.so).
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- On the libgcc_s opened by thread unwind. */
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/* Expected libraries that loader will seal. */
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static const char *expected_sealed_vmas[] =
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{
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#ifdef DEFAULT_MEMORY_SEAL
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"libc.so",
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"ld.so",
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#endif
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"tst-dl_mseal",
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LIB_MODULE1,
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LIB_MODULE1_DEP,
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LIB_PRELOAD,
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LIB_AUDIT,
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LIB_DLOPEN_NODELETE,
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};
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/* Expected non sealed libraries. */
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static const char *expected_non_sealed_vmas[] =
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{
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#ifndef DEFAULT_MEMORY_SEAL
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"libc.so",
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"ld.so",
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#endif
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LIB_DLOPEN_DEFAULT,
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LIB_DLOPEN_DEFAULT_DEP,
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LIB_DLOPEN_NODELETE_DEP,
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/* Auxiliary pages mapped by the kernel. */
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"[vdso]",
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"[sigpage]",
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};
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/* Special pages, either Auxiliary kernel pages where permission can not be
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changed or auxiliary libs that we can know prior hand that sealing is
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enabled. */
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static const char *expected_non_sealed_special[] =
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{
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LIBGCC_S_SO,
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"[vectors]",
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};
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static void *
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tf (void *closure)
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{
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pthread_exit (NULL);
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return NULL;
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}
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static void
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run_extra_steps (void)
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{
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xdlopen (LIB_DLOPEN_NODELETE, RTLD_NOW | RTLD_NODELETE);
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xdlopen (LIB_DLOPEN_DEFAULT, RTLD_NOW);
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/* pthread_exit will load LIBGCC_S_SO. */
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xpthread_join (xpthread_create (NULL, tf, NULL));
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}
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#define LD_PRELOAD LIB_PRELOAD
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#define LD_AUDIT LIB_AUDIT
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#include "tst-dl_mseal-skeleton.c"
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