110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* Copyright (c) 1982, 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)inode.h 7.5 (Berkeley) 7/3/89
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*/
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#ifndef _BOOT_UFS_DISK_INODE_H_
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#define _BOOT_UFS_DISK_INODE_H_
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/*
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* The I node is the focus of all file activity in the BSD Fast File System.
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* There is a unique inode allocated for each active file,
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* each current directory, each mounted-on file, text file, and the root.
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* An inode is 'named' by its dev/inumber pair. (iget/iget.c)
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* Data in icommon is read in from permanent inode on volume.
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*/
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#define FFS_NDADDR 12 /* direct addresses in inode */
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#define FFS_NIADDR 3 /* indirect addresses in inode */
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#define FFS_MAX_FASTLINK_SIZE ((FFS_NDADDR + FFS_NIADDR) \
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* sizeof (mach_daddr_t))
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struct icommon
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{
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unsigned short ic_mode; /* 0: mode and type of file */
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short ic_nlink; /* 2: number of links to file */
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mach_uid_t ic_uid; /* 4: owner's user id */
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mach_gid_t ic_gid; /* 6: owner's group id */
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quad ic_size; /* 8: number of bytes in file */
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mach_time_t ic_atime; /* 16: time last accessed */
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int ic_atspare;
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mach_time_t ic_mtime; /* 24: time last modified */
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int ic_mtspare;
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mach_time_t ic_ctime; /* 32: last time inode changed */
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int ic_ctspare;
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union
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{
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struct
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{
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mach_daddr_t Mb_db[FFS_NDADDR]; /* 40: disk block addresses */
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mach_daddr_t Mb_ib[FFS_NIADDR]; /* 88: indirect blocks */
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}
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ic_Mb;
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char ic_Msymlink[FFS_MAX_FASTLINK_SIZE];
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/* 40: symbolic link name */
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}
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ic_Mun;
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#define ic_db ic_Mun.ic_Mb.Mb_db
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#define ic_ib ic_Mun.ic_Mb.Mb_ib
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#define ic_symlink ic_Mun.ic_Msymlink
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int ic_flags; /* 100: status, currently unused */
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int ic_blocks; /* 104: blocks actually held */
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int ic_gen; /* 108: generation number */
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int ic_spare[4]; /* 112: reserved, currently unused */
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};
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/*
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* Same structure, but on disk.
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*/
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struct dinode
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{
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union
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{
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struct icommon di_com;
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char di_char[128];
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}
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di_un;
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};
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#define di_ic di_un.di_com
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#endif /* _BOOT_UFS_DISK_INODE_H_ */
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