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/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* xattr.h
*
* Copyright (C) 2004, 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 version 2 as published by the Free Software Foundation.
*
* 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.
*/
#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
};
struct ocfs2_security_xattr_info {
int enable;
char *name;
void *value;
size_t value_len;
};
extern const struct xattr_handler ocfs2_xattr_user_handler;
extern const struct xattr_handler ocfs2_xattr_trusted_handler;
extern const struct xattr_handler ocfs2_xattr_security_handler;
extern const struct xattr_handler ocfs2_xattr_acl_access_handler;
extern const struct xattr_handler ocfs2_xattr_acl_default_handler;
extern const struct xattr_handler *ocfs2_xattr_handlers[];
ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
const char *, void *, size_t);
int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
size_t, int);
int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
int, const char *, const void *, size_t, int,
struct ocfs2_alloc_context *,
struct ocfs2_alloc_context *);
int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
struct ocfs2_dinode *di);
int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
int ocfs2_init_security_get(struct inode *, struct inode *,
const struct qstr *,
struct ocfs2_security_xattr_info *);
int ocfs2_init_security_set(handle_t *, struct inode *,
struct buffer_head *,
struct ocfs2_security_xattr_info *,
struct ocfs2_alloc_context *,
struct ocfs2_alloc_context *);
int ocfs2_calc_security_init(struct inode *,
struct ocfs2_security_xattr_info *,
int *, int *, struct ocfs2_alloc_context **);
int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
umode_t, struct ocfs2_security_xattr_info *,
int *, int *, int *);
/*
* xattrs can live inside an inode, as part of an external xattr block,
* or inside an xattr bucket, which is the leaf of a tree rooted in an
* xattr block. Some of the xattr calls, especially the value setting
* functions, want to treat each of these locations as equal. Let's wrap
* them in a structure that we can pass around instead of raw buffer_heads.
*/
struct ocfs2_xattr_value_buf {
struct buffer_head *vb_bh;
ocfs2_journal_access_func vb_access;
struct ocfs2_xattr_value_root *vb_xv;
};
int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
struct buffer_head *fe_bh,
struct ocfs2_caching_info *ref_ci,
struct buffer_head *ref_root_bh,
struct ocfs2_cached_dealloc_ctxt *dealloc);
int ocfs2_reflink_xattrs(struct inode *old_inode,
struct buffer_head *old_bh,
struct inode *new_inode,
struct buffer_head *new_bh,
bool preserve_security);
int ocfs2_init_security_and_acl(struct inode *dir,
struct inode *inode,
const struct qstr *qstr);
#endif /* OCFS2_XATTR_H */
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