xref: /aosp_15_r20/external/ltp/testcases/kernel/syscalls/mmap/mmap08.c (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7)

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) International Business Machines  Corp., 2001
 *  07/2001 Ported by Wayne Boyer
 * Copyright (c) 2023 SUSE LLC Avinesh Kumar <[email protected]>
 */

/*\
 * [Description]
 *
 * Verify that, mmap() calls fails with errno EBADF when a file mapping
 * is requested but the fd is not a valid file descriptor.
 */

#include <stdlib.h>
#include "tst_test.h"

#define TEMPFILE "mmapfile"
static size_t page_sz;
static int fd;

static void setup(void)
{
	fd = SAFE_OPEN(TEMPFILE, O_RDWR | O_CREAT, 0666);
	SAFE_CLOSE(fd);
}

static void run(void)
{
	TST_EXP_FAIL_PTR_VOID(mmap(NULL, page_sz, PROT_WRITE,
				   MAP_FILE | MAP_SHARED, fd, 0), EBADF);

	if (TST_RET_PTR != MAP_FAILED)
		SAFE_MUNMAP(TST_RET_PTR, page_sz);
}

static void cleanup(void)
{
	if (fd > 0)
		SAFE_CLOSE(fd);
}

static struct tst_test test = {
	.setup = setup,
	.cleanup = cleanup,
	.test_all = run,
	.needs_tmpdir = 1
};