1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
4 * Copyright (c) Linux Test Project, 2003-2024
5 */
6
7 /*\
8 * [Description]
9 *
10 * Checks that swapon() succeds with swapfile.
11 * Testing on all filesystems which support swap file.
12 */
13
14 #include <unistd.h>
15 #include <errno.h>
16 #include <stdlib.h>
17 #include "tst_test.h"
18 #include "lapi/syscalls.h"
19 #include "libswap.h"
20
21 #define MNTPOINT "mntpoint"
22 #define SWAP_FILE MNTPOINT"/swapfile01"
23 #define TESTMEM (1UL<<30)
24
verify_swapon(void)25 static void verify_swapon(void)
26 {
27 TST_EXP_PASS(tst_syscall(__NR_swapon, SWAP_FILE, 0));
28
29 tst_pollute_memory(TESTMEM, 0x41);
30 tst_res(TINFO, "SwapCached: %ld Kb", SAFE_READ_MEMINFO("SwapCached:"));
31
32 if (TST_PASS && tst_syscall(__NR_swapoff, SWAP_FILE) != 0) {
33 tst_brk(TBROK | TERRNO,
34 "Failed to turn off swapfile, system reboot recommended");
35 }
36 }
37
setup(void)38 static void setup(void)
39 {
40 is_swap_supported(SWAP_FILE);
41 MAKE_SWAPFILE_SIZE(SWAP_FILE, 128);
42
43 SAFE_CG_PRINTF(tst_cg, "cgroup.procs", "%d", getpid());
44 SAFE_CG_PRINTF(tst_cg, "memory.max", "%lu", TESTMEM);
45 }
46
47 static struct tst_test test = {
48 .mntpoint = MNTPOINT,
49 .mount_device = 1,
50 .needs_root = 1,
51 .all_filesystems = 1,
52 .needs_cgroup_ctrls = (const char *const []){ "memory", NULL },
53 .test_all = verify_swapon,
54 .setup = setup
55 };
56