/*

 * Mach Operating System

 * Copyright (c) 1991,1990 Carnegie Mellon University

 * All Rights Reserved.

 *

 * Permission to use, copy, modify and distribute this software and its

 * documentation is hereby granted, provided that both the copyright

 * notice and this permission notice appear in all copies of the

 * software, derivative works or modified versions, and any portions

 * thereof, and that both notices appear in supporting documentation.

 *

 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"

 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR

 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.

 *

 * Carnegie Mellon requests users of this software to return to

 *

 *  Software Distribution Coordinator  or  [email protected]

 *  School of Computer Science

 *  Carnegie Mellon University

 *  Pittsburgh PA 15213-3890

 *

 * any improvements or extensions that they make and grant Carnegie Mellon

 * the rights to redistribute these changes.

 */

/*

 * Copyright (c) 1982, 1989 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 *

 *	@(#)inode.h	7.5 (Berkeley) 7/3/89

 */

#ifndef	_BOOT_UFS_DISK_INODE_H_

#define	_BOOT_UFS_DISK_INODE_H_

/*

 * The I node is the focus of all file activity in the BSD Fast File System.

 * There is a unique inode allocated for each active file,

 * each current directory, each mounted-on file, text file, and the root.

 * An inode is 'named' by its dev/inumber pair. (iget/iget.c)

 * Data in icommon is read in from permanent inode on volume.

 */

#define	FFS_NDADDR	12	/* direct addresses in inode */

#define	FFS_NIADDR	3	/* indirect addresses in inode */

#define	FFS_MAX_FASTLINK_SIZE	((FFS_NDADDR + FFS_NIADDR) \

				 * sizeof (mach_daddr_t))

struct icommon

  {

    u_short ic_mode;		/*  0: mode and type of file */

    short ic_nlink;		/*  2: number of links to file */

    mach_uid_t ic_uid;		/*  4: owner's user id */

    mach_gid_t ic_gid;		/*  6: owner's group id */

    quad ic_size;		/*  8: number of bytes in file */

    mach_time_t ic_atime;	/* 16: time last accessed */

    int ic_atspare;

    mach_time_t ic_mtime;	/* 24: time last modified */

    int ic_mtspare;

    mach_time_t ic_ctime;	/* 32: last time inode changed */

    int ic_ctspare;

    union

      {

	struct

	  {

	    mach_daddr_t Mb_db[FFS_NDADDR];	/* 40: disk block addresses */

	    mach_daddr_t Mb_ib[FFS_NIADDR];	/* 88: indirect blocks */

	  }

	ic_Mb;

	char ic_Msymlink[FFS_MAX_FASTLINK_SIZE];

	/* 40: symbolic link name */

      }

    ic_Mun;

#define	ic_db		ic_Mun.ic_Mb.Mb_db

#define	ic_ib		ic_Mun.ic_Mb.Mb_ib

#define	ic_symlink	ic_Mun.ic_Msymlink

    int ic_flags;		/* 100: status, currently unused */

    int ic_blocks;		/* 104: blocks actually held */

    int ic_gen;			/* 108: generation number */

    int ic_spare[4];		/* 112: reserved, currently unused */

  };

/*

 *	Same structure, but on disk.

 */

struct dinode

  {

    union

      {

	struct icommon di_com;

	char di_char[128];

      }

    di_un;

  };

#define	di_ic	di_un.di_com

#endif /* _BOOT_UFS_DISK_INODE_H_ */