1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
8 * Copyright (C) 2008 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
29 #include <linux/init.h>
30 #include <linux/xattr.h>
32 enum ocfs2_xattr_type {
33 OCFS2_XATTR_INDEX_USER = 1,
34 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
35 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
36 OCFS2_XATTR_INDEX_TRUSTED,
37 OCFS2_XATTR_INDEX_SECURITY,
41 extern struct xattr_handler ocfs2_xattr_user_handler;
42 extern struct xattr_handler ocfs2_xattr_trusted_handler;
44 extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
45 extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t);
46 extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
48 extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh);
49 extern struct xattr_handler *ocfs2_xattr_handlers[];
51 static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
53 return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE;
56 static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
58 return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
61 static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
63 u16 len = sb->s_blocksize -
64 offsetof(struct ocfs2_xattr_header, xh_entries);
66 return len / sizeof(struct ocfs2_xattr_entry);
68 #endif /* OCFS2_XATTR_H */