1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 */ 26 /* 27 * Copyright (c) 1982, 1989 The Regents of the University of California. 28 * All rights reserved. 29 * 30 * Redistribution and use in source and binary forms are permitted 31 * provided that the above copyright notice and this paragraph are 32 * duplicated in all such forms and that any documentation, 33 * advertising materials, and other materials related to such 34 * distribution and use acknowledge that the software was developed 35 * by the University of California, Berkeley. The name of the 36 * University may not be used to endorse or promote products derived 37 * from this software without specific prior written permission. 38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 39 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 40 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 41 * 42 * @(#)inode.h 7.5 (Berkeley) 7/3/89 43 */ 44 45 #ifndef _BOOT_UFS_DISK_INODE_H_ 46 #define _BOOT_UFS_DISK_INODE_H_ 47 48 /* 49 * The I node is the focus of all file activity in the BSD Fast File System. 50 * There is a unique inode allocated for each active file, 51 * each current directory, each mounted-on file, text file, and the root. 52 * An inode is 'named' by its dev/inumber pair. (iget/iget.c) 53 * Data in icommon is read in from permanent inode on volume. 54 */ 55 56 #define FFS_NDADDR 12 /* direct addresses in inode */ 57 #define FFS_NIADDR 3 /* indirect addresses in inode */ 58 59 #define FFS_MAX_FASTLINK_SIZE ((FFS_NDADDR + FFS_NIADDR) \ 60 * sizeof (mach_daddr_t)) 61 62 struct icommon 63 { 64 u_short ic_mode; /* 0: mode and type of file */ 65 short ic_nlink; /* 2: number of links to file */ 66 mach_uid_t ic_uid; /* 4: owner's user id */ 67 mach_gid_t ic_gid; /* 6: owner's group id */ 68 quad ic_size; /* 8: number of bytes in file */ 69 mach_time_t ic_atime; /* 16: time last accessed */ 70 int ic_atspare; 71 mach_time_t ic_mtime; /* 24: time last modified */ 72 int ic_mtspare; 73 mach_time_t ic_ctime; /* 32: last time inode changed */ 74 int ic_ctspare; 75 union 76 { 77 struct 78 { 79 mach_daddr_t Mb_db[FFS_NDADDR]; /* 40: disk block addresses */ 80 mach_daddr_t Mb_ib[FFS_NIADDR]; /* 88: indirect blocks */ 81 } 82 ic_Mb; 83 char ic_Msymlink[FFS_MAX_FASTLINK_SIZE]; 84 /* 40: symbolic link name */ 85 } 86 ic_Mun; 87 #define ic_db ic_Mun.ic_Mb.Mb_db 88 #define ic_ib ic_Mun.ic_Mb.Mb_ib 89 #define ic_symlink ic_Mun.ic_Msymlink 90 int ic_flags; /* 100: status, currently unused */ 91 int ic_blocks; /* 104: blocks actually held */ 92 int ic_gen; /* 108: generation number */ 93 int ic_spare[4]; /* 112: reserved, currently unused */ 94 }; 95 96 /* 97 * Same structure, but on disk. 98 */ 99 struct dinode 100 { 101 union 102 { 103 struct icommon di_com; 104 char di_char[128]; 105 } 106 di_un; 107 }; 108 #define di_ic di_un.di_com 109 110 #endif /* _BOOT_UFS_DISK_INODE_H_ */ 111
