1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * 07/2001 Ported by Wayne Boyer
5 * Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
6 */
7
8 /*\
9 * [Description]
10 *
11 * verify that, mmap() calls fails with errno EBADF when a file mapping
12 * is requested but the fd is not a valid file descriptor.
13 */
14
15 #include <stdlib.h>
16 #include "tst_test.h"
17
18 #define TEMPFILE "mmapfile"
19 static size_t page_sz;
20 static int fd;
21
setup(void)22 static void setup(void)
23 {
24 fd = SAFE_OPEN(TEMPFILE, O_RDWR | O_CREAT, 0666);
25 SAFE_CLOSE(fd);
26 }
27
run(void)28 static void run(void)
29 {
30 TESTPTR(mmap(NULL, page_sz, PROT_WRITE, MAP_FILE | MAP_SHARED, fd, 0));
31
32 if (TST_RET_PTR != MAP_FAILED) {
33 tst_res(TFAIL, "mmap() passed unexpectedly");
34 SAFE_MUNMAP(TST_RET_PTR, page_sz);
35 } else if (TST_ERR == EBADF) {
36 tst_res(TPASS, "mmap() failed with EBADF");
37 } else {
38 tst_res(TFAIL | TERRNO, "mmap() failed with an invalid errno");
39 }
40 }
41
cleanup(void)42 static void cleanup(void)
43 {
44 if (fd > 0)
45 SAFE_CLOSE(fd);
46 }
47
48 static struct tst_test test = {
49 .setup = setup,
50 .cleanup = cleanup,
51 .test_all = run,
52 .needs_tmpdir = 1
53 };
54