/*
   *  coda_fs_i.h
   *
   *  Copyright (C) 1998 Carnegie Mellon University
   *
   */
  
  #ifndef _LINUX_CODA_FS_I
  #define _LINUX_CODA_FS_I

  #include <linux/types.h>
  #include <linux/list.h>

  #include <linux/spinlock.h>

  #include <linux/coda.h>
  
  /*
   * coda fs inode data

   * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and
   * c_cached_perm.
   * vfs_inode is set only when the inode is created and never changes.
   * c_fid is set when the inode is created and should be considered immutable.

   */
  struct coda_inode_info {

  	struct CodaFid	   c_fid;	/* Coda identifier */
  	u_short	           c_flags;     /* flags (see below) */

  	unsigned int	   c_mapcount;  /* nr of times this inode is mapped */
  	unsigned int	   c_cached_epoch; /* epoch for cached permissions */
  	vuid_t		   c_uid;	/* fsuid for cached permissions */

  	unsigned int       c_cached_perm; /* cached access permissions */
  	spinlock_t	   c_lock;

  	struct inode	   vfs_inode;
  };
  
  /*
   * coda fs file private data
   */
  #define CODA_MAGIC 0xC0DAC0DA
  struct coda_file_info {
  	int		   cfi_magic;	  /* magic number */
  	struct file	  *cfi_container; /* container file for this cnode */
  	unsigned int	   cfi_mapcount;  /* nr of times this file is mapped */
  };
  
  #define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
  
  /* flags */
  #define C_VATTR       0x1   /* Validity of vattr in inode */
  #define C_FLUSH       0x2   /* used after a flush */
  #define C_DYING       0x4   /* from venus (which died) */
  #define C_PURGE       0x8

  struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);

  struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);

  struct inode *coda_cnode_makectl(struct super_block *sb);

  struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
  void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
  
  #endif