diff options
Diffstat (limited to 'fs/ocfs2/xattr.h')
| -rw-r--r-- | fs/ocfs2/xattr.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h new file mode 100644 index 00000000000..c25c7c62a05 --- /dev/null +++ b/fs/ocfs2/xattr.h @@ -0,0 +1,68 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * xattr.h + * + * Function prototypes + * + * Copyright (C) 2008 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef OCFS2_XATTR_H +#define OCFS2_XATTR_H + +#include <linux/init.h> +#include <linux/xattr.h> + +enum ocfs2_xattr_type { + OCFS2_XATTR_INDEX_USER = 1, + OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS, + OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT, + OCFS2_XATTR_INDEX_TRUSTED, + OCFS2_XATTR_INDEX_SECURITY, + OCFS2_XATTR_MAX +}; + +extern struct xattr_handler ocfs2_xattr_user_handler; +extern struct xattr_handler ocfs2_xattr_trusted_handler; + +extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); +extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t); +extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *, + size_t, int); +extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh); +extern struct xattr_handler *ocfs2_xattr_handlers[]; + +static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb) +{ + return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE; +} + +static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb) +{ + return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits); +} + +static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb) +{ + u16 len = sb->s_blocksize - + offsetof(struct ocfs2_xattr_header, xh_entries); + + return len / sizeof(struct ocfs2_xattr_entry); +} +#endif /* OCFS2_XATTR_H */ |