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9897ced8e7
This is conceptually similar to the reported bug, but does not depend on auditing. The fix is simple: just complete execution of the constructors. This exposed the fact that the link map for statically linked executables does not have l_init_called set, even though constructors have run. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Indirectly opened module that recursively opens the directly opened module.
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Copyright (C) 2024 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 <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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int recursemod2_status;
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static void __attribute__ ((constructor))
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init (void)
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{
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++recursemod2_status;
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printf ("info: tst-dlopen-recursemod2.so constructor called (status %d)\n",
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recursemod2_status);
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void *handle = dlopen ("tst-dlopen-recursemod1.so", RTLD_NOW);
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if (handle == NULL)
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{
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printf ("error: dlopen: %s\n", dlerror ());
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exit (1);
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}
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int *status = dlsym (handle, "recursemod1_status");
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if (status == NULL)
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{
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printf ("error: dlsym: %s\n", dlerror ());
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exit (1);
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}
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printf ("info: recursemod1_status == %d\n", *status);
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if (*status != 1)
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{
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puts ("error: recursemod1_status == 1 expected");
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exit (1);
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}
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++*status;
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printf ("info: recursemod1_status == %d\n", *status);
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int **mod2_status = dlsym (handle, "force_recursemod2_reference");
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if (mod2_status == NULL || *mod2_status != &recursemod2_status)
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{
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puts ("error: invalid recursemod2_status address in"
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" tst-dlopen-recursemod1.so");
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exit (1);
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}
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}
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static void __attribute__ ((destructor))
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fini (void)
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{
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printf ("info: tst-dlopen-recursemod2.so destructor called (status %d)\n",
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recursemod2_status);
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}
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