| 1 | /* Check compatibility of CET-enabled executable with dlopened legacy |
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| 2 | shared object. |
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| 3 | Copyright (C) 2018-2024 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include <dlfcn.h> |
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| 21 | #include <stdio.h> |
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| 22 | #include <stdlib.h> |
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| 23 | #include <string.h> |
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| 24 | #include <sys/platform/x86.h> |
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| 25 | |
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| 26 | #include <support/check.h> |
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| 27 | |
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| 28 | static int |
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| 29 | do_test (void) |
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| 30 | { |
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| 31 | static const char modname[] = "tst-cet-legacy-mod-4.so" ; |
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| 32 | int (*fp) (void); |
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| 33 | void *h; |
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| 34 | |
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| 35 | h = dlopen (file: modname, RTLD_LAZY); |
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| 36 | if (h == NULL) |
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| 37 | { |
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| 38 | const char *err = dlerror (); |
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| 39 | if (!strstr (err, "rebuild shared object with IBT support enabled" )) |
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| 40 | FAIL_EXIT1 ("incorrect dlopen '%s' error: %s\n" , modname, err); |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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| 44 | #ifdef CET_IS_PERMISSIVE |
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| 45 | TEST_VERIFY (!CPU_FEATURE_ACTIVE (IBT) && !CPU_FEATURE_ACTIVE (SHSTK)); |
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| 46 | #endif |
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| 47 | |
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| 48 | fp = dlsym (handle: h, name: "test" ); |
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| 49 | if (fp == NULL) |
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| 50 | FAIL_EXIT1 ("cannot get symbol 'test': %s\n" , dlerror ()); |
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| 51 | |
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| 52 | if (fp () != 0) |
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| 53 | FAIL_EXIT1 ("test () != 0" ); |
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| 54 | |
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| 55 | dlclose (handle: h); |
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| 56 | |
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| 57 | return 0; |
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| 58 | } |
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| 59 | |
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| 60 | #include <support/test-driver.c> |
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| 61 | |
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