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88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* Common code for tst-dlopen-tlsmodid, tst-dlopen-tlsmodid-pie,
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tst-dlopen-tlsmodid-container.
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Verify that incorrectly dlopen()ing an executable without
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__RTLD_OPENEXEC does not cause assertion in ld.so, and that it
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actually results in an error.
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Copyright (C) 2014-2020 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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/* Before including this file, the macro TST_DLOPEN_TLSMODID_PATH must
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be defined, to specify the path used for the open operation. */
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#include <dlfcn.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/xthread.h>
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__thread int x;
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void *
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fn (void *p)
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{
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return p;
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}
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/* Call dlopen and check that fails with an error message indicating
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an attempt to open an ET_EXEC or PIE object. */
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static void
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check_dlopen_failure (void)
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{
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void *handle = dlopen (TST_DLOPEN_TLSMODID_PATH, RTLD_LAZY);
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if (handle != NULL)
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FAIL_EXIT1 ("dlopen succeeded unexpectedly: %s", TST_DLOPEN_TLSMODID_PATH);
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const char *message = dlerror ();
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TEST_VERIFY_EXIT (message != NULL);
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if ((strstr (message,
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"cannot dynamically load position-independent executable")
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== NULL)
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&& strstr (message, "cannot dynamically load executable") == NULL)
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FAIL_EXIT1 ("invalid dlopen error message: \"%s\"", message);
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}
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static int
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do_test (int argc, char *argv[])
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{
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int j;
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for (j = 0; j < 100; ++j)
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{
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pthread_t thr;
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check_dlopen_failure ();
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/* We create threads to force TLS allocation, which triggers
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the original bug i.e. running out of surplus slotinfo entries
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for TLS. */
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thr = xpthread_create (NULL, fn, NULL);
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xpthread_join (thr);
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}
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check_dlopen_failure ();
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return 0;
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}
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#define TEST_FUNCTION_ARGV do_test
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#include <support/test-driver.c>
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