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Tiger Yangcf1d6c72008-08-18 17:11:00 +08001/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * xattr.h
5 *
Tiger Yangc3cb6822008-10-23 16:33:03 +08006 * Copyright (C) 2004, 2008 Oracle. All rights reserved.
Tiger Yangcf1d6c72008-08-18 17:11:00 +08007 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public
Tiger Yangc3cb6822008-10-23 16:33:03 +080010 * License version 2 as published by the Free Software Foundation.
Tiger Yangcf1d6c72008-08-18 17:11:00 +080011 *
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.
Tiger Yangcf1d6c72008-08-18 17:11:00 +080016 */
17
18#ifndef OCFS2_XATTR_H
19#define OCFS2_XATTR_H
20
21#include <linux/init.h>
22#include <linux/xattr.h>
23
24enum 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,
30 OCFS2_XATTR_MAX
31};
32
Tiger Yang534eadd2008-11-14 11:16:41 +080033struct ocfs2_security_xattr_info {
34 int enable;
35 char *name;
36 void *value;
37 size_t value_len;
38};
39
Tiger Yangcf1d6c72008-08-18 17:11:00 +080040extern struct xattr_handler ocfs2_xattr_user_handler;
41extern struct xattr_handler ocfs2_xattr_trusted_handler;
Tiger Yang923f7f32008-11-14 11:16:27 +080042extern struct xattr_handler ocfs2_xattr_security_handler;
Tiger Yang929fb012008-11-14 11:17:04 +080043#ifdef CONFIG_OCFS2_FS_POSIX_ACL
44extern struct xattr_handler ocfs2_xattr_acl_access_handler;
45extern struct xattr_handler ocfs2_xattr_acl_default_handler;
46#endif
Tiger Yangcf1d6c72008-08-18 17:11:00 +080047extern struct xattr_handler *ocfs2_xattr_handlers[];
48
Tiger Yang0030e002008-10-23 16:33:33 +080049ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
Tiger Yang4e3e9d02008-11-14 11:16:53 +080050int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
51 const char *, void *, size_t);
Tiger Yang0030e002008-10-23 16:33:33 +080052int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
53 size_t, int);
Tiger Yang6c3faba2008-11-14 11:16:03 +080054int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
55 int, const char *, const void *, size_t, int,
56 struct ocfs2_alloc_context *,
57 struct ocfs2_alloc_context *);
Tiger Yang0030e002008-10-23 16:33:33 +080058int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
Tiger Yang534eadd2008-11-14 11:16:41 +080059int ocfs2_init_security_get(struct inode *, struct inode *,
60 struct ocfs2_security_xattr_info *);
61int ocfs2_init_security_set(handle_t *, struct inode *,
62 struct buffer_head *,
63 struct ocfs2_security_xattr_info *,
64 struct ocfs2_alloc_context *,
65 struct ocfs2_alloc_context *);
66int ocfs2_calc_security_init(struct inode *,
67 struct ocfs2_security_xattr_info *,
68 int *, int *, struct ocfs2_alloc_context **);
Tiger Yang89c38bd2008-11-14 11:17:41 +080069int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
70 int, struct ocfs2_security_xattr_info *,
Mark Fasheh9b7895e2008-11-12 16:27:44 -080071 int *, int *, int *);
Tao Ma0c044f02008-08-18 17:38:50 +080072
Joel Becker2a50a742008-12-09 14:24:33 -080073/*
74 * xattrs can live inside an inode, as part of an external xattr block,
75 * or inside an xattr bucket, which is the leaf of a tree rooted in an
76 * xattr block. Some of the xattr calls, especially the value setting
77 * functions, want to treat each of these locations as equal. Let's wrap
78 * them in a structure that we can pass around instead of raw buffer_heads.
79 */
80struct ocfs2_xattr_value_buf {
81 struct buffer_head *vb_bh;
82 ocfs2_journal_access_func vb_access;
83 struct ocfs2_xattr_value_root *vb_xv;
84};
85
86
Tiger Yangcf1d6c72008-08-18 17:11:00 +080087#endif /* OCFS2_XATTR_H */