/*
   * include/linux/nfsd/nfsfh.h
   *
   * This file describes the layout of the file handles as passed
   * over the wire.
   *
   * Earlier versions of knfsd used to sign file handles using keyed MD5
   * or SHA. I've removed this code, because it doesn't give you more
   * security than blocking external access to port 2049 on your firewall.
   *
   * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
   */
  #ifndef _LINUX_NFSD_FH_H
  #define _LINUX_NFSD_FH_H
  
  # include <linux/sunrpc/svc.h>
  #include <uapi/linux/nfsd/nfsfh.h>
  
  static inline __u32 ino_t_to_u32(ino_t ino)
  {
  	return (__u32) ino;
  }
  
  static inline ino_t u32_to_ino_t(__u32 uino)
  {
  	return (ino_t) uino;
  }
  
  /*
   * This is the internal representation of an NFS handle used in knfsd.
   * pre_mtime/post_version will be used to support wcc_attr's in NFSv3.
   */
  typedef struct svc_fh {
  	struct knfsd_fh		fh_handle;	/* FH data */
  	struct dentry *		fh_dentry;	/* validated dentry */
  	struct svc_export *	fh_export;	/* export pointer */
  	int			fh_maxsize;	/* max size for fh_handle */
  
  	unsigned char		fh_locked;	/* inode locked by us */
  	unsigned char		fh_want_write;	/* remount protection taken */
  
  #ifdef CONFIG_NFSD_V3
  	unsigned char		fh_post_saved;	/* post-op attrs saved */
  	unsigned char		fh_pre_saved;	/* pre-op attrs saved */
  
  	/* Pre-op attributes saved during fh_lock */
  	__u64			fh_pre_size;	/* size before operation */
  	struct timespec		fh_pre_mtime;	/* mtime before oper */
  	struct timespec		fh_pre_ctime;	/* ctime before oper */
  	/*
  	 * pre-op nfsv4 change attr: note must check IS_I_VERSION(inode)
  	 *  to find out if it is valid.
  	 */
  	u64			fh_pre_change;
  
  	/* Post-op attributes saved in fh_unlock */
  	struct kstat		fh_post_attr;	/* full attrs after operation */
  	u64			fh_post_change; /* nfsv4 change; see above */
  #endif /* CONFIG_NFSD_V3 */
  
  } svc_fh;
  
  #endif /* _LINUX_NFSD_FH_H */