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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
#include <linux/reiserfs_fs.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/xattr.h>
#include <linux/reiserfs_xattr.h>
#include <asm/uaccess.h>
#define XATTR_SECURITY_PREFIX "security."
static int
security_get (struct inode *inode, const char *name, void *buffer, size_t size)
{
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
return -EINVAL;
if (is_reiserfs_priv_object(inode))
return -EPERM;
return reiserfs_xattr_get (inode, name, buffer, size);
}
static int
security_set (struct inode *inode, const char *name, const void *buffer,
size_t size, int flags)
{
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
return -EINVAL;
if (is_reiserfs_priv_object(inode))
return -EPERM;
return reiserfs_xattr_set (inode, name, buffer, size, flags);
}
static int
security_del (struct inode *inode, const char *name)
{
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
return -EINVAL;
if (is_reiserfs_priv_object(inode))
return -EPERM;
return 0;
}
static int
security_list (struct inode *inode, const char *name, int namelen, char *out)
{
int len = namelen;
if (is_reiserfs_priv_object(inode))
return 0;
if (out)
memcpy (out, name, len);
return len;
}
struct reiserfs_xattr_handler security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.get = security_get,
.set = security_set,
.del = security_del,
.list = security_list,
};
|
