1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * Copyright (C) 2004, 2008 Oracle. All rights reserved.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public
10 * License version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
21 #include <linux/init.h>
22 #include <linux/xattr.h>
24 enum ocfs2_xattr_type {
25 OCFS2_XATTR_INDEX_USER = 1,
26 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
27 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
28 OCFS2_XATTR_INDEX_TRUSTED,
29 OCFS2_XATTR_INDEX_SECURITY,
33 extern struct xattr_handler ocfs2_xattr_user_handler;
34 extern struct xattr_handler ocfs2_xattr_trusted_handler;
36 extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
37 extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t);
38 extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
40 extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh);
41 extern struct xattr_handler *ocfs2_xattr_handlers[];
43 static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
45 return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE;
48 static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
50 return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
53 static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
55 u16 len = sb->s_blocksize -
56 offsetof(struct ocfs2_xattr_header, xh_entries);
58 return len / sizeof(struct ocfs2_xattr_entry);
60 #endif /* OCFS2_XATTR_H */