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/* Loading TLS-using modules from auditors (bug 32412). Audit module.
Copyright (C) 2021-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <link.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
unsigned int
la_version (unsigned int version)
{
/* Open some modules, to trigger DTV resizing before the switch to
the main malloc. */
for (int i = 1; i <= 19; ++i)
{
char dso[30];
snprintf (dso, sizeof (dso), "tst-tlsmod17a%d.so", i);
char sym[30];
snprintf (sym, sizeof(sym), "tlsmod17a%d", i);
void *handle = dlopen (dso, RTLD_LAZY);
if (handle == NULL)
{
printf ("error: dlmopen from auditor: %s\n", dlerror ());
fflush (stdout);
_exit (1);
}
int (*func) (void) = dlsym (handle, sym);
if (func == NULL)
{
printf ("error: dlsym from auditor: %s\n", dlerror ());
fflush (stdout);
_exit (1);
}
/* Trigger TLS allocation. */
func ();
}
puts ("info: TLS-using modules loaded from auditor");
fflush (stdout);
return LAV_CURRENT;
}
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