1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
4 * Copyright (c) 2018 Xiao Yang <[email protected]>
5 * Copyright (c) Linux Test Project, 2002-2023
6 * Author: Madhu T L <[email protected]>
7 */
8
9 /*\
10 * [Description]
11 *
12 * Basic test for delete_module(2).
13 *
14 * Install dummy_del_mod.ko and delete it with delete_module(2).
15 */
16
17 #include <stdlib.h>
18 #include "tst_test.h"
19 #include "tst_module.h"
20 #include "tst_kconfig.h"
21 #include "lapi/syscalls.h"
22
23 #define MODULE_NAME "dummy_del_mod"
24 #define MODULE_NAME_KO MODULE_NAME ".ko"
25
26 static int module_loaded;
27
do_delete_module(void)28 static void do_delete_module(void)
29 {
30 struct tst_kcmdline_var params = TST_KCMDLINE_INIT("module.sig_enforce");
31
32 tst_kcmdline_parse(¶ms, 1);
33 if (atoi(params.value) == 1)
34 tst_brk(TCONF, "module signature is enforced, skip test");
35
36 if (!module_loaded) {
37 tst_module_load(MODULE_NAME_KO, NULL);
38 module_loaded = 1;
39 }
40
41 TEST(tst_syscall(__NR_delete_module, MODULE_NAME, 0));
42 if (TST_RET == -1) {
43 tst_res(TFAIL | TTERRNO,
44 "delete_module() failed to remove module entry for %s",
45 MODULE_NAME);
46 return;
47 }
48
49 tst_res(TPASS, "delete_module() successful");
50 module_loaded = 0;
51 }
52
cleanup(void)53 static void cleanup(void)
54 {
55 if (module_loaded)
56 tst_module_unload(MODULE_NAME_KO);
57 }
58
59 static struct tst_test test = {
60 .needs_root = 1,
61 /* lockdown and SecureBoot requires signed modules */
62 .skip_in_lockdown = 1,
63 .skip_in_secureboot = 1,
64 .cleanup = cleanup,
65 .test_all = do_delete_module,
66 };
67