1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#define __SANE_USERSPACE_TYPES__
#include <fcntl.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include "kselftest_harness.h"
#include "wrappers.h"
TEST(kernfs_listxattr)
{
ssize_t len;
int fd;
/* Read-only file that can never have any extended attributes set.
* However, on systems with SELinux enabled, security.selinux xattr
* may be present. Skip the content check if any xattrs are found.
*/
fd = open("/sys/kernel/warn_count", O_RDONLY | O_CLOEXEC);
ASSERT_GE(fd, 0);
len = flistxattr(fd, NULL, 0);
ASSERT_GE(len, 0);
if (len > 0) {
close(fd);
SKIP(return, "xattrs present on /sys/kernel/warn_count, skipping xattr content check");
}
EXPECT_EQ(close(fd), 0);
}
TEST(kernfs_getxattr)
{
int fd;
char buf[1];
/* Read-only file that can never have any extended attributes set. */
fd = open("/sys/kernel/warn_count", O_RDONLY | O_CLOEXEC);
ASSERT_GE(fd, 0);
ASSERT_LT(fgetxattr(fd, "user.foo", buf, sizeof(buf)), 0);
ASSERT_EQ(errno, ENODATA);
EXPECT_EQ(close(fd), 0);
}
TEST_HARNESS_MAIN
|
