1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2023 Paulson Raja L <[email protected]>
4 */
5
6 /*\
7 * [Description]
8 *
9 * Test mmap(2) with MAP_SHARED_VALIDATE flag.
10 *
11 * Test expected EOPNOTSUPP errno when testing mmap(2) with MAP_SHARED_VALIDATE
12 * flag and invalid flag.
13 */
14
15 #include <errno.h>
16 #include <stdio.h>
17 #include <sys/types.h>
18 #include "tst_test.h"
19 #include "lapi/mmap.h"
20
21 #define TEST_FILE "file_to_mmap"
22 #define TEST_FILE_SIZE 1024
23 #define INVALID_FLAG (1 << 10)
24
25 static int fd = -1;
26 static void *addr;
27
setup(void)28 static void setup(void)
29 {
30 fd = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR, 0600);
31
32 if (tst_fill_file(TEST_FILE, 'a', TEST_FILE_SIZE, 1))
33 tst_brk(TBROK, "Could not fill the testfile");
34 }
35
cleanup(void)36 static void cleanup(void)
37 {
38 if (fd > -1)
39 SAFE_CLOSE(fd);
40
41 if (addr && addr != MAP_FAILED)
42 SAFE_MUNMAP(addr, TEST_FILE_SIZE);
43 }
44
test_mmap(void)45 static void test_mmap(void)
46 {
47 addr = mmap(NULL, TEST_FILE_SIZE, PROT_READ | PROT_WRITE,
48 INVALID_FLAG | MAP_SHARED_VALIDATE, fd, 0);
49
50 if (addr != MAP_FAILED)
51 tst_res(TFAIL | TERRNO, "mmap() is successful, but it should have failed");
52 else if (errno == EOPNOTSUPP)
53 tst_res(TPASS, "mmap() failed with errno set to EOPNOTSUPP");
54 else
55 tst_res(TFAIL | TERRNO, "mmap() failed with unexpected error");
56 }
57
58 static struct tst_test test = {
59 .min_kver = "4.15",
60 .setup = setup,
61 .cleanup = cleanup,
62 .test_all = test_mmap,
63 .needs_tmpdir = 1,
64 };
65