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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/fs/ext4/xattr_security.c
3 * Handler for storing security labels as extended attributes.
4 */
5
6#include <linux/string.h>
7#include <linux/fs.h>
8#include <linux/security.h>
9#include <linux/slab.h>
10#include "ext4_jbd2.h"
11#include "ext4.h"
12#include "xattr.h"
13
14static int
15ext4_xattr_security_get(const struct xattr_handler *handler,
16 struct dentry *unused, struct inode *inode,
17 const char *name, void *buffer, size_t size)
18{
19 return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,
20 name, buffer, size);
21}
22
23static int
24ext4_xattr_security_set(const struct xattr_handler *handler,
25 struct dentry *unused, struct inode *inode,
26 const char *name, const void *value,
27 size_t size, int flags)
28{
29 return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY,
30 name, value, size, flags);
31}
32
33static int
34ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
35 void *fs_info)
36{
37 const struct xattr *xattr;
38 handle_t *handle = fs_info;
39 int err = 0;
40
41 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
42 err = ext4_xattr_set_handle(handle, inode,
43 EXT4_XATTR_INDEX_SECURITY,
44 xattr->name, xattr->value,
45 xattr->value_len, 0);
46 if (err < 0)
47 break;
48 }
49 return err;
50}
51
52int
53ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
54 const struct qstr *qstr)
55{
56 return security_inode_init_security(inode, dir, qstr,
57 &ext4_initxattrs, handle);
58}
59
60const struct xattr_handler ext4_xattr_security_handler = {
61 .prefix = XATTR_SECURITY_PREFIX,
62 .get = ext4_xattr_security_get,
63 .set = ext4_xattr_security_set,
64};