Commit | Line | Data |
---|---|---|
127e5f5a VD |
1 | /* |
2 | * linux/fs/hfsplus/xattr_user.c | |
3 | * | |
4 | * Vyacheslav Dubeyko <slava@dubeyko.com> | |
5 | * | |
6 | * Handler for user extended attributes. | |
7 | */ | |
8 | ||
bf29e886 HTL |
9 | #include <linux/nls.h> |
10 | ||
127e5f5a VD |
11 | #include "hfsplus_fs.h" |
12 | #include "xattr.h" | |
13 | ||
14 | static int hfsplus_user_getxattr(struct dentry *dentry, const char *name, | |
15 | void *buffer, size_t size, int type) | |
16 | { | |
bf29e886 HTL |
17 | char *xattr_name; |
18 | int res; | |
127e5f5a VD |
19 | |
20 | if (!strcmp(name, "")) | |
21 | return -EINVAL; | |
22 | ||
bf29e886 HTL |
23 | xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, |
24 | GFP_KERNEL); | |
25 | if (!xattr_name) | |
26 | return -ENOMEM; | |
127e5f5a VD |
27 | strcpy(xattr_name, XATTR_USER_PREFIX); |
28 | strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); | |
29 | ||
bf29e886 HTL |
30 | res = hfsplus_getxattr(dentry, xattr_name, buffer, size); |
31 | kfree(xattr_name); | |
32 | return res; | |
127e5f5a VD |
33 | } |
34 | ||
35 | static int hfsplus_user_setxattr(struct dentry *dentry, const char *name, | |
36 | const void *buffer, size_t size, int flags, int type) | |
37 | { | |
bf29e886 HTL |
38 | char *xattr_name; |
39 | int res; | |
127e5f5a VD |
40 | |
41 | if (!strcmp(name, "")) | |
42 | return -EINVAL; | |
43 | ||
bf29e886 HTL |
44 | xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, |
45 | GFP_KERNEL); | |
46 | if (!xattr_name) | |
47 | return -ENOMEM; | |
127e5f5a VD |
48 | strcpy(xattr_name, XATTR_USER_PREFIX); |
49 | strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); | |
50 | ||
bf29e886 HTL |
51 | res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); |
52 | kfree(xattr_name); | |
53 | return res; | |
127e5f5a VD |
54 | } |
55 | ||
56 | static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list, | |
57 | size_t list_size, const char *name, size_t name_len, int type) | |
58 | { | |
59 | /* | |
60 | * This method is not used. | |
61 | * It is used hfsplus_listxattr() instead of generic_listxattr(). | |
62 | */ | |
63 | return -EOPNOTSUPP; | |
64 | } | |
65 | ||
66 | const struct xattr_handler hfsplus_xattr_user_handler = { | |
67 | .prefix = XATTR_USER_PREFIX, | |
68 | .list = hfsplus_user_listxattr, | |
69 | .get = hfsplus_user_getxattr, | |
70 | .set = hfsplus_user_setxattr, | |
71 | }; |