Commit | Line | Data |
---|---|---|
1da177e4 | 1 | #include <linux/reiserfs_fs.h> |
16f7e0fe | 2 | #include <linux/capability.h> |
1da177e4 LT |
3 | #include <linux/errno.h> |
4 | #include <linux/fs.h> | |
5 | #include <linux/pagemap.h> | |
6 | #include <linux/xattr.h> | |
7 | #include <linux/reiserfs_xattr.h> | |
8 | #include <asm/uaccess.h> | |
9 | ||
1da177e4 | 10 | static int |
bd4c625c | 11 | trusted_get(struct inode *inode, const char *name, void *buffer, size_t size) |
1da177e4 | 12 | { |
bd4c625c LT |
13 | if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) |
14 | return -EINVAL; | |
1da177e4 | 15 | |
bd4c625c LT |
16 | if (!reiserfs_xattrs(inode->i_sb)) |
17 | return -EOPNOTSUPP; | |
1da177e4 | 18 | |
bd4c625c LT |
19 | if (!(capable(CAP_SYS_ADMIN) || is_reiserfs_priv_object(inode))) |
20 | return -EPERM; | |
1da177e4 | 21 | |
bd4c625c | 22 | return reiserfs_xattr_get(inode, name, buffer, size); |
1da177e4 LT |
23 | } |
24 | ||
25 | static int | |
bd4c625c LT |
26 | trusted_set(struct inode *inode, const char *name, const void *buffer, |
27 | size_t size, int flags) | |
1da177e4 | 28 | { |
bd4c625c LT |
29 | if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) |
30 | return -EINVAL; | |
1da177e4 | 31 | |
bd4c625c LT |
32 | if (!reiserfs_xattrs(inode->i_sb)) |
33 | return -EOPNOTSUPP; | |
1da177e4 | 34 | |
bd4c625c LT |
35 | if (!(capable(CAP_SYS_ADMIN) || is_reiserfs_priv_object(inode))) |
36 | return -EPERM; | |
1da177e4 | 37 | |
bd4c625c | 38 | return reiserfs_xattr_set(inode, name, buffer, size, flags); |
1da177e4 LT |
39 | } |
40 | ||
bd4c625c | 41 | static int trusted_del(struct inode *inode, const char *name) |
1da177e4 | 42 | { |
bd4c625c LT |
43 | if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) |
44 | return -EINVAL; | |
1da177e4 | 45 | |
bd4c625c LT |
46 | if (!reiserfs_xattrs(inode->i_sb)) |
47 | return -EOPNOTSUPP; | |
1da177e4 | 48 | |
bd4c625c LT |
49 | if (!(capable(CAP_SYS_ADMIN) || is_reiserfs_priv_object(inode))) |
50 | return -EPERM; | |
1da177e4 | 51 | |
bd4c625c | 52 | return 0; |
1da177e4 LT |
53 | } |
54 | ||
55 | static int | |
bd4c625c | 56 | trusted_list(struct inode *inode, const char *name, int namelen, char *out) |
1da177e4 | 57 | { |
bd4c625c | 58 | int len = namelen; |
1da177e4 | 59 | |
bd4c625c LT |
60 | if (!reiserfs_xattrs(inode->i_sb)) |
61 | return 0; | |
1da177e4 | 62 | |
bd4c625c LT |
63 | if (!(capable(CAP_SYS_ADMIN) || is_reiserfs_priv_object(inode))) |
64 | return 0; | |
1da177e4 | 65 | |
bd4c625c LT |
66 | if (out) |
67 | memcpy(out, name, len); | |
1da177e4 | 68 | |
bd4c625c | 69 | return len; |
1da177e4 LT |
70 | } |
71 | ||
1da177e4 LT |
72 | struct reiserfs_xattr_handler trusted_handler = { |
73 | .prefix = XATTR_TRUSTED_PREFIX, | |
74 | .get = trusted_get, | |
75 | .set = trusted_set, | |
76 | .del = trusted_del, | |
77 | .list = trusted_list, | |
78 | }; |