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
|
// SPDX-License-Identifier: GPL-2.0
#include "reiserfs.h"
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/xattr.h>
#include "xattr.h"
#include <linux/uaccess.h>
static int
trusted_get(const struct xattr_handler *handler, struct dentry *unused,
struct inode *inode, const char *name, void *buffer, size_t size)
{
if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
return -EPERM;
return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
buffer, size);
}
static int
trusted_set(const struct xattr_handler *handler,
struct mnt_idmap *idmap, struct dentry *unused,
struct inode *inode, const char *name, const void *buffer,
size_t size, int flags)
{
if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
return -EPERM;
return reiserfs_xattr_set(inode,
xattr_full_name(handler, name),
buffer, size, flags);
}
static bool trusted_list(struct dentry *dentry)
{
return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry));
}
const struct xattr_handler reiserfs_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.get = trusted_get,
.set = trusted_set,
.list = trusted_list,
};
|
