| 1 | /* Common code for tst-dlopen-tlsmodid, tst-dlopen-tlsmodid-pie, |
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| 2 | tst-dlopen-tlsmodid-container. |
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| 3 | |
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| 4 | Verify that incorrectly dlopen()ing an executable without |
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| 5 | __RTLD_OPENEXEC does not cause assertion in ld.so, and that it |
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| 6 | actually results in an error. |
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| 7 | |
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| 8 | Copyright (C) 2014-2022 Free Software Foundation, Inc. |
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| 9 | This file is part of the GNU C Library. |
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| 10 | |
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| 11 | The GNU C Library is free software; you can redistribute it and/or |
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| 12 | modify it under the terms of the GNU Lesser General Public |
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| 13 | License as published by the Free Software Foundation; either |
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| 14 | version 2.1 of the License, or (at your option) any later version. |
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| 15 | |
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| 16 | The GNU C Library is distributed in the hope that it will be useful, |
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| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 19 | Lesser General Public License for more details. |
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| 20 | |
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| 21 | You should have received a copy of the GNU Lesser General Public |
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| 22 | License along with the GNU C Library; if not, see |
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| 23 | <https://www.gnu.org/licenses/>. */ |
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| 24 | |
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| 25 | /* Before including this file, the macro TST_DLOPEN_TLSMODID_PATH must |
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| 26 | be defined, to specify the path used for the open operation. */ |
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| 27 | |
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| 28 | #include <dlfcn.h> |
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| 29 | #include <pthread.h> |
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| 30 | #include <stdio.h> |
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| 31 | #include <stdlib.h> |
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| 32 | #include <string.h> |
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| 33 | #include <support/check.h> |
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| 34 | #include <support/support.h> |
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| 35 | #include <support/xthread.h> |
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| 36 | |
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| 37 | __thread int x; |
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| 38 | |
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| 39 | void * |
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| 40 | fn (void *p) |
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| 41 | { |
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| 42 | return p; |
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| 43 | } |
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| 44 | |
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| 45 | /* Call dlopen and check that fails with an error message indicating |
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| 46 | an attempt to open an ET_EXEC or PIE object. */ |
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| 47 | static void |
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| 48 | check_dlopen_failure (void) |
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| 49 | { |
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| 50 | void *handle = dlopen (TST_DLOPEN_TLSMODID_PATH, RTLD_LAZY); |
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| 51 | if (handle != NULL) |
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| 52 | FAIL_EXIT1 ("dlopen succeeded unexpectedly: %s" , TST_DLOPEN_TLSMODID_PATH); |
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| 53 | |
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| 54 | const char *message = dlerror (); |
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| 55 | TEST_VERIFY_EXIT (message != NULL); |
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| 56 | if ((strstr (haystack: message, |
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| 57 | needle: "cannot dynamically load position-independent executable" ) |
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| 58 | == NULL) |
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| 59 | && strstr (haystack: message, needle: "cannot dynamically load executable" ) == NULL) |
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| 60 | FAIL_EXIT1 ("invalid dlopen error message: \"%s\"" , message); |
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| 61 | } |
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| 62 | |
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| 63 | static int |
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| 64 | do_test (int argc, char *argv[]) |
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| 65 | { |
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| 66 | int j; |
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| 67 | |
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| 68 | for (j = 0; j < 100; ++j) |
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| 69 | { |
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| 70 | pthread_t thr; |
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| 71 | |
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| 72 | check_dlopen_failure (); |
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| 73 | |
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| 74 | /* We create threads to force TLS allocation, which triggers |
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| 75 | the original bug i.e. running out of surplus slotinfo entries |
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| 76 | for TLS. */ |
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| 77 | thr = xpthread_create (NULL, thread_func: fn, NULL); |
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| 78 | xpthread_join (thr); |
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| 79 | } |
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| 80 | |
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| 81 | check_dlopen_failure (); |
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| 82 | |
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| 83 | return 0; |
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| 84 | } |
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| 85 | |
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| 86 | #define TEST_FUNCTION_ARGV do_test |
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| 87 | #include <support/test-driver.c> |
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| 88 | |
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