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/* GLRO(dl_pagesize) initialization DSO test with a static executable.
Copyright (C) 2013-2021 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 <stddef.h>
#include <stdio.h>
#include <unistd.h>
/* Check that the same page size is reported both directly and by a DSO
mapped from a static executable.
On targets that support different page sizes, the kernel communicates
the size currently in use via the auxiliary vector. The auxiliary
vector and HWCAP/HWCAP2 bits are copied across the static dlopen
boundary in __rtld_static_init. */
static int
do_test (void)
{
int pagesize = getpagesize ();
int (*my_getpagesize) (void);
int my_pagesize;
void *handle;
/* Try to map a module. */
handle = dlopen ("modstatic5.so", RTLD_LAZY | RTLD_LOCAL);
if (handle == NULL)
{
printf ("dlopen (modstatic5.so): %s\n", dlerror ());
return 1;
}
/* Get at its symbol. */
my_getpagesize = dlsym (handle, "my_getpagesize");
if (my_getpagesize == NULL)
{
printf ("dlsym (my_getpagesize): %s\n", dlerror ());
return 1;
}
/* Make sure the page size reported is the same either way. */
my_pagesize = my_getpagesize ();
if (my_pagesize != pagesize)
{
printf ("my_getpagesize: got %i, expected %i\n", my_pagesize, pagesize);
return 1;
}
/* All done, clean up. */
my_getpagesize = NULL;
dlclose (handle);
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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