1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2019 Federico Bonfiglio <fedebonfi95@gmail.com>
4 * Copyright (c) Linux Test Project, 2019-2022
5 */
6
7 /*\
8 * [Description]
9 *
10 * Test ioctl_ns with NS_GET_OWNER_UID request.
11 *
12 * Calls ioctl for a UTS namespace, which isn't a user namespace.
13 * This should make the call fail with EINVAL.
14 *
15 */
16 #define _GNU_SOURCE
17
18 #include <errno.h>
19 #include "tst_test.h"
20 #include "lapi/ioctl_ns.h"
21
setup(void)22 static void setup(void)
23 {
24 int exists = access("/proc/self/ns/uts", F_OK);
25
26 if (exists < 0)
27 tst_res(TCONF, "namespace not available");
28 }
29
run(void)30 static void run(void)
31 {
32 int fd, owner_fd;
33
34 fd = SAFE_OPEN("/proc/self/ns/uts", O_RDONLY);
35 uid_t uid;
36
37 owner_fd = ioctl(fd, NS_GET_OWNER_UID, &uid);
38 if (owner_fd == -1) {
39 if (errno == ENOTTY)
40 tst_brk(TCONF, "ioctl(NS_GET_OWNER_UID) not implemented");
41
42 if (errno == EINVAL)
43 tst_res(TPASS, "NS_GET_OWNER_UID fails, UTS namespace");
44 else
45 tst_res(TFAIL | TERRNO, "unexpected ioctl error");
46 } else {
47 tst_res(TFAIL, "call to ioctl succeded");
48 }
49 SAFE_CLOSE(fd);
50 }
51
52 static struct tst_test test = {
53 .test_all = run,
54 .min_kver = "4.11",
55 .setup = setup
56 };
57