1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) Linux Test Project, 2009-2021
4 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
5 * Author: Aniruddha Marathe <aniruddha.marathe@wipro.com>
6 */
7
8 /*\
9 * [Description]
10 * Test whether libc wrapper of reboot(2) system call returns appropriate
11 * error number for invalid cmd parameter or invalid user.
12 */
13
14 #include <unistd.h>
15 #include <sys/reboot.h>
16 #include <linux/reboot.h>
17 #include <pwd.h>
18 #include "tst_test.h"
19
20 #define INVALID_CMD 100
21 #define CMD_DESC(x) .cmd = x, .desc = #x
22
23 char nobody_uid[] = "nobody";
24 struct passwd *ltpuser;
25
26 static struct tcase {
27 int cmd;
28 const char *desc;
29 int exp_errno;
30 } tcases[] = {
31 {CMD_DESC(INVALID_CMD), EINVAL},
32 {CMD_DESC(LINUX_REBOOT_CMD_CAD_ON), EPERM},
33 };
34
run(unsigned int n)35 static void run(unsigned int n)
36 {
37 struct tcase *tc = &tcases[n];
38
39 if (n == 0)
40 TST_EXP_FAIL(reboot(tc->cmd),
41 tc->exp_errno, "%s", tc->desc);
42 else {
43 ltpuser = SAFE_GETPWNAM(nobody_uid);
44 SAFE_SETEUID(ltpuser->pw_uid);
45
46 TST_EXP_FAIL(reboot(tc->cmd),
47 tc->exp_errno, "%s", tc->desc);
48
49 SAFE_SETEUID(0);
50 }
51 }
52
53 static struct tst_test test = {
54 .needs_root = 1,
55 .test = run,
56 .tcnt = ARRAY_SIZE(tcases),
57 };
58