Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * linux/fs/ext4/xattr_user.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Handler for extended user attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "ext4_jbd2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "ext4.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) ext4_xattr_user_list(struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	return test_opt(dentry->d_sb, XATTR_USER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) ext4_xattr_user_get(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		    struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		    const char *name, void *buffer, size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	if (!test_opt(inode->i_sb, XATTR_USER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 			      name, buffer, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ext4_xattr_user_set(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		    struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		    const char *name, const void *value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		    size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	if (!test_opt(inode->i_sb, XATTR_USER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 			      name, value, size, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) const struct xattr_handler ext4_xattr_user_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	.prefix	= XATTR_USER_PREFIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	.list	= ext4_xattr_user_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	.get	= ext4_xattr_user_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	.set	= ext4_xattr_user_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };