1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Squashfs - a compressed read only filesystem for Linux
4  *
5  * Copyright (c) 2010
6  * Phillip Lougher <phillip@squashfs.org.uk>
7  *
8  * xattr.h
9  */
10 
11 #ifdef CONFIG_SQUASHFS_XATTR
12 extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
13 		u64 *, int *);
14 extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
15 		unsigned int *, unsigned long long *);
16 #else
squashfs_read_xattr_id_table(struct super_block * sb,u64 start,u64 * xattr_table_start,int * xattr_ids)17 static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
18 		u64 start, u64 *xattr_table_start, int *xattr_ids)
19 {
20 	struct squashfs_xattr_id_table *id_table;
21 
22 	id_table = squashfs_read_table(sb, start, sizeof(*id_table));
23 	if (IS_ERR(id_table))
24 		return (__le64 *) id_table;
25 
26 	*xattr_table_start = le64_to_cpu(id_table->xattr_table_start);
27 	kfree(id_table);
28 
29 	ERROR("Xattrs in filesystem, these will be ignored\n");
30 	return ERR_PTR(-ENOTSUPP);
31 }
32 
squashfs_xattr_lookup(struct super_block * sb,unsigned int index,int * count,unsigned int * size,unsigned long long * xattr)33 static inline int squashfs_xattr_lookup(struct super_block *sb,
34 		unsigned int index, int *count, unsigned int *size,
35 		unsigned long long *xattr)
36 {
37 	return 0;
38 }
39 #define squashfs_listxattr NULL
40 #define squashfs_xattr_handlers NULL
41 #endif
42