/*
 * 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  Software.Distribution@CS.CMU.EDU
 *  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_ */