1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
4 * Author: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
5 */
6
7 #include <errno.h>
8
9 #define TST_NO_DEFAULT_MAIN
10
11 #include "tst_test.h"
12 #include "libswap.h"
13 #include "lapi/syscalls.h"
14
15 /*
16 * Make a swap file
17 */
make_swapfile(const char * swapfile,int safe)18 int make_swapfile(const char *swapfile, int safe)
19 {
20 if (!tst_fs_has_free(".", sysconf(_SC_PAGESIZE) * 10, TST_BYTES))
21 tst_brk(TBROK, "Insufficient disk space to create swap file");
22
23 /* create file */
24 if (tst_fill_file(swapfile, 0, sysconf(_SC_PAGESIZE), 10) != 0)
25 tst_brk(TBROK, "Failed to create swapfile");
26
27 /* make the file swapfile */
28 const char *argv[2 + 1];
29 argv[0] = "mkswap";
30 argv[1] = swapfile;
31 argv[2] = NULL;
32
33 return tst_cmd(argv, "/dev/null", "/dev/null", safe ?
34 TST_CMD_PASS_RETVAL | TST_CMD_TCONF_ON_MISSING : 0);
35 }
36
37 /*
38 * Check swapon/swapoff support status of filesystems or files
39 * we are testing on.
40 */
is_swap_supported(const char * filename)41 void is_swap_supported(const char *filename)
42 {
43 int fibmap = tst_fibmap(filename);
44 long fs_type = tst_fs_type(filename);
45 const char *fstype = tst_fs_type_name(fs_type);
46
47 int ret = make_swapfile(filename, 1);
48 if (ret != 0) {
49 if (fibmap == 1)
50 tst_brk(TCONF, "mkswap on %s not supported", fstype);
51 else
52 tst_brk(TFAIL, "mkswap on %s failed", fstype);
53 }
54
55 TEST(tst_syscall(__NR_swapon, filename, 0));
56 if (TST_RET == -1) {
57 if (errno == EPERM)
58 tst_brk(TCONF, "Permission denied for swapon()");
59 else if (fibmap == 1 && errno == EINVAL)
60 tst_brk(TCONF, "Swapfile on %s not implemented", fstype);
61 else
62 tst_brk(TFAIL | TTERRNO, "swapon() on %s failed", fstype);
63 }
64
65 TEST(tst_syscall(__NR_swapoff, filename, 0));
66 if (TST_RET == -1)
67 tst_brk(TFAIL | TTERRNO, "swapoff on %s failed", fstype);
68 }
69