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 *, unsigned int *);
14 extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
15 unsigned int *, unsigned long long *);
16 #else
17 static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
18 u64 start, u64 *xattr_table_start, unsigned 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
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
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