Commit | Line | Data |
---|---|---|
f466c6fd | 1 | #include "reiserfs.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> | |
c45ac888 | 7 | #include "xattr.h" |
17093991 | 8 | #include <linux/uaccess.h> |
1da177e4 | 9 | |
1da177e4 | 10 | static int |
d9a82a04 AG |
11 | trusted_get(const struct xattr_handler *handler, struct dentry *dentry, |
12 | const char *name, void *buffer, size_t size) | |
1da177e4 | 13 | { |
bd4c625c LT |
14 | if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) |
15 | return -EINVAL; | |
1da177e4 | 16 | |
2b0143b5 | 17 | if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(d_inode(dentry))) |
bd4c625c | 18 | return -EPERM; |
1da177e4 | 19 | |
2b0143b5 | 20 | return reiserfs_xattr_get(d_inode(dentry), name, buffer, size); |
1da177e4 LT |
21 | } |
22 | ||
23 | static int | |
d9a82a04 AG |
24 | trusted_set(const struct xattr_handler *handler, struct dentry *dentry, |
25 | const char *name, const void *buffer, size_t size, int flags) | |
1da177e4 | 26 | { |
bd4c625c LT |
27 | if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) |
28 | return -EINVAL; | |
1da177e4 | 29 | |
2b0143b5 | 30 | if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(d_inode(dentry))) |
bd4c625c | 31 | return -EPERM; |
1da177e4 | 32 | |
2b0143b5 | 33 | return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags); |
1da177e4 LT |
34 | } |
35 | ||
764a5c6b | 36 | static bool trusted_list(struct dentry *dentry) |
1da177e4 | 37 | { |
764a5c6b | 38 | return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry)); |
1da177e4 LT |
39 | } |
40 | ||
94d09a98 | 41 | const struct xattr_handler reiserfs_xattr_trusted_handler = { |
1da177e4 LT |
42 | .prefix = XATTR_TRUSTED_PREFIX, |
43 | .get = trusted_get, | |
44 | .set = trusted_set, | |
1da177e4 LT |
45 | .list = trusted_list, |
46 | }; |