| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * linux/fs/ext4/xattr_user.c |
| 4 | * Handler for extended user attributes. |
| 5 | * |
| 6 | * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
| 7 | */ |
| 8 | |
| 9 | #include <linux/string.h> |
| 10 | #include <linux/fs.h> |
| 11 | #include "ext4_jbd2.h" |
| 12 | #include "ext4.h" |
| 13 | #include "xattr.h" |
| 14 | |
| 15 | static bool |
| 16 | ext4_xattr_user_list(struct dentry *dentry) |
| 17 | { |
| 18 | return test_opt(dentry->d_sb, XATTR_USER); |
| 19 | } |
| 20 | |
| 21 | static int |
| 22 | ext4_xattr_user_get(const struct xattr_handler *handler, |
| 23 | struct dentry *unused, struct inode *inode, |
| 24 | const char *name, void *buffer, size_t size) |
| 25 | { |
| 26 | if (!test_opt(inode->i_sb, XATTR_USER)) |
| 27 | return -EOPNOTSUPP; |
| 28 | return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER, |
| 29 | name, buffer, size); |
| 30 | } |
| 31 | |
| 32 | static int |
| 33 | ext4_xattr_user_set(const struct xattr_handler *handler, |
| 34 | struct dentry *unused, struct inode *inode, |
| 35 | const char *name, const void *value, |
| 36 | size_t size, int flags) |
| 37 | { |
| 38 | if (!test_opt(inode->i_sb, XATTR_USER)) |
| 39 | return -EOPNOTSUPP; |
| 40 | return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER, |
| 41 | name, value, size, flags); |
| 42 | } |
| 43 | |
| 44 | const struct xattr_handler ext4_xattr_user_handler = { |
| 45 | .prefix = XATTR_USER_PREFIX, |
| 46 | .list = ext4_xattr_user_list, |
| 47 | .get = ext4_xattr_user_get, |
| 48 | .set = ext4_xattr_user_set, |
| 49 | }; |