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 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
10 # include <linux/reiserfs_acl.h>
11 #endif
12
13 static int
user_get(struct inode * inode,const char * name,void * buffer,size_t size)14 user_get(struct inode *inode, const char *name, void *buffer, size_t size)
15 {
16
17 if (strlen(name) < sizeof(XATTR_USER_PREFIX))
18 return -EINVAL;
19 if (!reiserfs_xattrs_user(inode->i_sb))
20 return -EOPNOTSUPP;
21 return reiserfs_xattr_get(inode, name, buffer, size);
22 }
23
24 static int
user_set(struct inode * inode,const char * name,const void * buffer,size_t size,int flags)25 user_set(struct inode *inode, const char *name, const void *buffer,
26 size_t size, int flags)
27 {
28
29 if (strlen(name) < sizeof(XATTR_USER_PREFIX))
30 return -EINVAL;
31
32 if (!reiserfs_xattrs_user(inode->i_sb))
33 return -EOPNOTSUPP;
34 return reiserfs_xattr_set(inode, name, buffer, size, flags);
35 }
36
user_del(struct inode * inode,const char * name)37 static int user_del(struct inode *inode, const char *name)
38 {
39 if (strlen(name) < sizeof(XATTR_USER_PREFIX))
40 return -EINVAL;
41
42 if (!reiserfs_xattrs_user(inode->i_sb))
43 return -EOPNOTSUPP;
44 return 0;
45 }
46
47 static int
user_list(struct inode * inode,const char * name,int namelen,char * out)48 user_list(struct inode *inode, const char *name, int namelen, char *out)
49 {
50 int len = namelen;
51 if (!reiserfs_xattrs_user(inode->i_sb))
52 return 0;
53
54 if (out)
55 memcpy(out, name, len);
56
57 return len;
58 }
59
60 struct reiserfs_xattr_handler user_handler = {
61 .prefix = XATTR_USER_PREFIX,
62 .get = user_get,
63 .set = user_set,
64 .del = user_del,
65 .list = user_list,
66 };
67