mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
|
/* Test mremap with MREMAP_MAYMOVE.
|
||
|
|
Copyright (C) 2024 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 <errno.h>
|
||
|
|
#include <sys/mman.h>
|
||
|
|
#include <support/xstdlib.h>
|
||
|
|
#include <support/xunistd.h>
|
||
|
|
#include <support/check.h>
|
||
|
|
#include <support/test-driver.h>
|
||
|
|
|
||
|
|
static int
|
||
|
|
do_test (void)
|
||
|
|
{
|
||
|
|
size_t old_size = getpagesize ();
|
||
|
|
char *old_addr = xmmap (NULL, old_size, PROT_READ | PROT_WRITE,
|
||
|
|
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||
|
|
old_addr[0] = 1;
|
||
|
|
old_addr[old_size - 1] = 2;
|
||
|
|
|
||
|
|
/* Test MREMAP_MAYMOVE. */
|
||
|
|
size_t new_size = old_size + old_size;
|
||
|
|
char *new_addr = mremap (old_addr, old_size, new_size, MREMAP_MAYMOVE);
|
||
|
|
TEST_VERIFY_EXIT (new_addr != MAP_FAILED);
|
||
|
|
new_addr[0] = 1;
|
||
|
|
new_addr[new_size - 1] = 2;
|
||
|
|
xmunmap (new_addr, new_size);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#include <support/test-driver.c>
|