| 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 | static int |
| 10 | user_get(struct dentry *dentry, const char *name, void *buffer, size_t size, |
| 11 | int handler_flags) |
| 12 | { |
| 13 | |
| 14 | if (strlen(name) < sizeof(XATTR_USER_PREFIX)) |
| 15 | return -EINVAL; |
| 16 | if (!reiserfs_xattrs_user(dentry->d_sb)) |
| 17 | return -EOPNOTSUPP; |
| 18 | return reiserfs_xattr_get(dentry->d_inode, name, buffer, size); |
| 19 | } |
| 20 | |
| 21 | static int |
| 22 | user_set(struct dentry *dentry, const char *name, const void *buffer, |
| 23 | size_t size, int flags, int handler_flags) |
| 24 | { |
| 25 | if (strlen(name) < sizeof(XATTR_USER_PREFIX)) |
| 26 | return -EINVAL; |
| 27 | |
| 28 | if (!reiserfs_xattrs_user(dentry->d_sb)) |
| 29 | return -EOPNOTSUPP; |
| 30 | return reiserfs_xattr_set(dentry->d_inode, name, buffer, size, flags); |
| 31 | } |
| 32 | |
| 33 | static size_t user_list(struct dentry *dentry, char *list, size_t list_size, |
| 34 | const char *name, size_t name_len, int handler_flags) |
| 35 | { |
| 36 | const size_t len = name_len + 1; |
| 37 | |
| 38 | if (!reiserfs_xattrs_user(dentry->d_sb)) |
| 39 | return 0; |
| 40 | if (list && len <= list_size) { |
| 41 | memcpy(list, name, name_len); |
| 42 | list[name_len] = '\0'; |
| 43 | } |
| 44 | return len; |
| 45 | } |
| 46 | |
| 47 | const struct xattr_handler reiserfs_xattr_user_handler = { |
| 48 | .prefix = XATTR_USER_PREFIX, |
| 49 | .get = user_get, |
| 50 | .set = user_set, |
| 51 | .list = user_list, |
| 52 | }; |