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Linux kernel mirror (for testing)
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1#include <linux/reiserfs_fs.h>
2#include <linux/errno.h>
3#include <linux/fs.h>
4#include <linux/pagemap.h>
5#include <linux/xattr.h>
6#include <linux/reiserfs_xattr.h>
7#include <asm/uaccess.h>
8
9#define XATTR_SECURITY_PREFIX "security."
10
11static int
12security_get(struct inode *inode, const char *name, void *buffer, size_t size)
13{
14 if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
15 return -EINVAL;
16
17 if (is_reiserfs_priv_object(inode))
18 return -EPERM;
19
20 return reiserfs_xattr_get(inode, name, buffer, size);
21}
22
23static int
24security_set(struct inode *inode, const char *name, const void *buffer,
25 size_t size, int flags)
26{
27 if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
28 return -EINVAL;
29
30 if (is_reiserfs_priv_object(inode))
31 return -EPERM;
32
33 return reiserfs_xattr_set(inode, name, buffer, size, flags);
34}
35
36static int security_del(struct inode *inode, const char *name)
37{
38 if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
39 return -EINVAL;
40
41 if (is_reiserfs_priv_object(inode))
42 return -EPERM;
43
44 return 0;
45}
46
47static int
48security_list(struct inode *inode, const char *name, int namelen, char *out)
49{
50 int len = namelen;
51
52 if (is_reiserfs_priv_object(inode))
53 return 0;
54
55 if (out)
56 memcpy(out, name, len);
57
58 return len;
59}
60
61struct reiserfs_xattr_handler security_handler = {
62 .prefix = XATTR_SECURITY_PREFIX,
63 .get = security_get,
64 .set = security_set,
65 .del = security_del,
66 .list = security_list,
67};