/*

   * Copyright (c) 2001-2005 Silicon Graphics, Inc.
   * 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.
   *

   * This program is distributed in the hope that it would 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 the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

   */
  #ifndef __XFS_ACL_H__
  #define __XFS_ACL_H__

  struct inode;
  struct posix_acl;
  struct xfs_inode;

  #define XFS_ACL_MAX_ENTRIES 25

  #define XFS_ACL_NOT_PRESENT (-1)

  /* On-disk XFS access control list structure */
  struct xfs_acl {
  	__be32		acl_cnt;
  	struct xfs_acl_entry {
  		__be32	ae_tag;
  		__be32	ae_id;
  		__be16	ae_perm;
  	} acl_entry[XFS_ACL_MAX_ENTRIES];
  };

  
  /* On-disk XFS extended attribute names */

  #define SGI_ACL_FILE		(unsigned char *)"SGI_ACL_FILE"
  #define SGI_ACL_DEFAULT		(unsigned char *)"SGI_ACL_DEFAULT"

  #define SGI_ACL_FILE_SIZE	(sizeof(SGI_ACL_FILE)-1)
  #define SGI_ACL_DEFAULT_SIZE	(sizeof(SGI_ACL_DEFAULT)-1)

  #ifdef CONFIG_XFS_POSIX_ACL

  extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
  extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
  extern int xfs_acl_chmod(struct inode *inode);

  extern int posix_acl_access_exists(struct inode *inode);
  extern int posix_acl_default_exists(struct inode *inode);

  extern const struct xattr_handler xfs_xattr_acl_access_handler;
  extern const struct xattr_handler xfs_xattr_acl_default_handler;

  #else

  static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
  {
  	return NULL;
  }

  # define xfs_inherit_acl(inode, default_acl)		0
  # define xfs_acl_chmod(inode)				0

  # define posix_acl_access_exists(inode)			0
  # define posix_acl_default_exists(inode)		0
  #endif /* CONFIG_XFS_POSIX_ACL */

  #endif	/* __XFS_ACL_H__ */