mirror of git://sourceware.org/git/glibc.git
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* Loading TLS-using modules from auditors (bug 32412). Audit module.
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Copyright (C) 2021-2025 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 <dlfcn.h>
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#include <link.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <unistd.h>
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unsigned int
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la_version (unsigned int version)
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{
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/* Open some modules, to trigger DTV resizing before the switch to
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the main malloc. */
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for (int i = 1; i <= 19; ++i)
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{
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char dso[30];
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snprintf (dso, sizeof (dso), "tst-tlsmod17a%d.so", i);
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char sym[30];
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snprintf (sym, sizeof(sym), "tlsmod17a%d", i);
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void *handle = dlopen (dso, RTLD_LAZY);
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if (handle == NULL)
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{
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printf ("error: dlmopen from auditor: %s\n", dlerror ());
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fflush (stdout);
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_exit (1);
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}
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int (*func) (void) = dlsym (handle, sym);
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if (func == NULL)
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{
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printf ("error: dlsym from auditor: %s\n", dlerror ());
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fflush (stdout);
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_exit (1);
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}
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/* Trigger TLS allocation. */
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func ();
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}
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puts ("info: TLS-using modules loaded from auditor");
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fflush (stdout);
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return LAV_CURRENT;
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}
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