tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#define _GNU_SOURCE
3#define __SANE_USERSPACE_TYPES__
4
5#include <fcntl.h>
6#include <stdio.h>
7#include <sys/stat.h>
8
9#include "../kselftest_harness.h"
10#include "wrappers.h"
11
12TEST(anon_inode_no_chown)
13{
14 int fd_context;
15
16 fd_context = sys_fsopen("tmpfs", 0);
17 ASSERT_GE(fd_context, 0);
18
19 ASSERT_LT(fchown(fd_context, 1234, 5678), 0);
20 ASSERT_EQ(errno, EOPNOTSUPP);
21
22 EXPECT_EQ(close(fd_context), 0);
23}
24
25TEST(anon_inode_no_chmod)
26{
27 int fd_context;
28
29 fd_context = sys_fsopen("tmpfs", 0);
30 ASSERT_GE(fd_context, 0);
31
32 ASSERT_LT(fchmod(fd_context, 0777), 0);
33 ASSERT_EQ(errno, EOPNOTSUPP);
34
35 EXPECT_EQ(close(fd_context), 0);
36}
37
38TEST(anon_inode_no_exec)
39{
40 int fd_context;
41
42 fd_context = sys_fsopen("tmpfs", 0);
43 ASSERT_GE(fd_context, 0);
44
45 ASSERT_LT(execveat(fd_context, "", NULL, NULL, AT_EMPTY_PATH), 0);
46 ASSERT_EQ(errno, EACCES);
47
48 EXPECT_EQ(close(fd_context), 0);
49}
50
51TEST(anon_inode_no_open)
52{
53 int fd_context;
54
55 fd_context = sys_fsopen("tmpfs", 0);
56 ASSERT_GE(fd_context, 0);
57
58 ASSERT_GE(dup2(fd_context, 500), 0);
59 ASSERT_EQ(close(fd_context), 0);
60 fd_context = 500;
61
62 ASSERT_LT(open("/proc/self/fd/500", 0), 0);
63 ASSERT_EQ(errno, ENXIO);
64
65 EXPECT_EQ(close(fd_context), 0);
66}
67
68TEST_HARNESS_MAIN
69