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/* Check that the entire main program image is readable if contiguous.
Copyright (C) 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 <link.h>
#include <support/check.h>
#include <support/xdlfcn.h>
static int
do_test (void)
{
struct link_map *l = xdlopen ("", RTLD_NOW);
if (!l->l_contiguous)
FAIL_UNSUPPORTED ("main link map is not contiguous");
/* This check only works if the kernel loaded the main program. The
dynamic loader replaces gaps with PROT_NONE mappings, resulting
in faults. */
volatile long int *p = (volatile long int *) l->l_map_start;
volatile long int *end = (volatile long int *) l->l_map_end;
while (p < end)
{
*p;
++p;
}
xdlclose (l);
return 0;
}
#include <support/test-driver.c>
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