/* -*- 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 */