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/*
* 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
{
unsigned 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_ */
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