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1// SPDX-License-Identifier: GPL-2.02/*3 * linux/fs/ext4/xattr_user.c4 * 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 15static bool16ext4_xattr_user_list(struct dentry *dentry)17{18 return test_opt(dentry->d_sb, XATTR_USER);19}20 21static int22ext4_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 32static int33ext4_xattr_user_set(const struct xattr_handler *handler,34 struct mnt_idmap *idmap,35 struct dentry *unused, struct inode *inode,36 const char *name, const void *value,37 size_t size, int flags)38{39 if (!test_opt(inode->i_sb, XATTR_USER))40 return -EOPNOTSUPP;41 return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,42 name, value, size, flags);43}44 45const struct xattr_handler ext4_xattr_user_handler = {46 .prefix = XATTR_USER_PREFIX,47 .list = ext4_xattr_user_list,48 .get = ext4_xattr_user_get,49 .set = ext4_xattr_user_set,50};51