dinode.h revision 98542
11541Srgrimes/* 298542Smckusick * Copyright (c) 2002 Networks Associates Technology, Inc. 398542Smckusick * All rights reserved. 498542Smckusick * 598542Smckusick * This software was developed for the FreeBSD Project by Marshall 698542Smckusick * Kirk McKusick and Network Associates Laboratories, the Security 798542Smckusick * Research Division of Network Associates, Inc. under DARPA/SPAWAR 898542Smckusick * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 998542Smckusick * research program 1098542Smckusick * 111541Srgrimes * Copyright (c) 1982, 1989, 1993 121541Srgrimes * The Regents of the University of California. All rights reserved. 131541Srgrimes * (c) UNIX System Laboratories, Inc. 141541Srgrimes * All or some portions of this file are derived from material licensed 151541Srgrimes * to the University of California by American Telephone and Telegraph 161541Srgrimes * Co. or Unix System Laboratories, Inc. and are reproduced herein with 171541Srgrimes * the permission of UNIX System Laboratories, Inc. 181541Srgrimes * 191541Srgrimes * Redistribution and use in source and binary forms, with or without 201541Srgrimes * modification, are permitted provided that the following conditions 211541Srgrimes * are met: 221541Srgrimes * 1. Redistributions of source code must retain the above copyright 231541Srgrimes * notice, this list of conditions and the following disclaimer. 241541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 251541Srgrimes * notice, this list of conditions and the following disclaimer in the 261541Srgrimes * documentation and/or other materials provided with the distribution. 2798542Smckusick * 3. The names of the authors may not be used to endorse or promote 2898542Smckusick * products derived from this software without specific prior written 2998542Smckusick * permission. 301541Srgrimes * 3198542Smckusick * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 321541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 331541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3498542Smckusick * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 351541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 361541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 371541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 381541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 391541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 401541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 411541Srgrimes * SUCH DAMAGE. 421541Srgrimes * 431541Srgrimes * @(#)dinode.h 8.3 (Berkeley) 1/21/94 4450477Speter * $FreeBSD: head/sys/ufs/ufs/dinode.h 98542 2002-06-21 06:18:05Z mckusick $ 451541Srgrimes */ 461541Srgrimes 472177Spaul#ifndef _UFS_UFS_DINODE_H_ 4898542Smckusick#define _UFS_UFS_DINODE_H_ 492177Spaul 501541Srgrimes/* 5196755Strhodes * The root inode is the root of the filesystem. Inode 0 can't be used for 521541Srgrimes * normal purposes and historically bad blocks were linked to inode 1, thus 531541Srgrimes * the root inode is 2. (Inode 1 is no longer used for this purpose, however 541541Srgrimes * numerous dump tapes make this assumption, so we are stuck with it). 551541Srgrimes */ 561541Srgrimes#define ROOTINO ((ino_t)2) 571541Srgrimes 581541Srgrimes/* 5922521Sdyson * The Whiteout inode# is a dummy non-zero inode number which will 6022521Sdyson * never be allocated to a real file. It is used as a place holder 6122521Sdyson * in the directory entry which has been tagged as a DT_W entry. 6222521Sdyson * See the comments about ROOTINO above. 6322521Sdyson */ 6422521Sdyson#define WINO ((ino_t)1) 6522521Sdyson 6622521Sdyson/* 6798542Smckusick * The size of physical and logical block numbers and time fields in UFS. 6898542Smckusick */ 6998542Smckusicktypedef int32_t ufs1_daddr_t; 7098542Smckusicktypedef int64_t ufs2_daddr_t; 7198542Smckusicktypedef int64_t ufs_lbn_t; 7298542Smckusicktypedef int64_t ufs_time_t; 7398542Smckusick 7498542Smckusick/* File permissions. */ 7598542Smckusick#define IEXEC 0000100 /* Executable. */ 7698542Smckusick#define IWRITE 0000200 /* Writeable. */ 7798542Smckusick#define IREAD 0000400 /* Readable. */ 7898542Smckusick#define ISVTX 0001000 /* Sticky bit. */ 7998542Smckusick#define ISGID 0002000 /* Set-gid. */ 8098542Smckusick#define ISUID 0004000 /* Set-uid. */ 8198542Smckusick 8298542Smckusick/* File types. */ 8398542Smckusick#define IFMT 0170000 /* Mask of file type. */ 8498542Smckusick#define IFIFO 0010000 /* Named pipe (fifo). */ 8598542Smckusick#define IFCHR 0020000 /* Character device. */ 8698542Smckusick#define IFDIR 0040000 /* Directory file. */ 8798542Smckusick#define IFBLK 0060000 /* Block device. */ 8898542Smckusick#define IFREG 0100000 /* Regular file. */ 8998542Smckusick#define IFLNK 0120000 /* Symbolic link. */ 9098542Smckusick#define IFSOCK 0140000 /* UNIX domain socket. */ 9198542Smckusick#define IFWHT 0160000 /* Whiteout. */ 9298542Smckusick 9398542Smckusick/* 9498542Smckusick * A dinode contains all the meta-data associated with a UFS2 file. 9522521Sdyson * This structure defines the on-disk format of a dinode. Since 9622521Sdyson * this structure describes an on-disk structure, all its fields 9722521Sdyson * are defined by types with precise widths. 981541Srgrimes */ 991541Srgrimes 10098542Smckusick#define NXADDR 2 /* External addresses in inode. */ 1011541Srgrimes#define NDADDR 12 /* Direct addresses in inode. */ 1021541Srgrimes#define NIADDR 3 /* Indirect addresses in inode. */ 1031541Srgrimes 10498542Smckusickstruct ufs2_dinode { 10522521Sdyson u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 10622521Sdyson int16_t di_nlink; /* 2: File link count. */ 10798542Smckusick u_int32_t di_uid; /* 4: File owner. */ 10898542Smckusick u_int32_t di_gid; /* 8: File group. */ 10998542Smckusick u_int32_t di_blksize; /* 12: Inode blocksize. */ 11098542Smckusick u_int64_t di_size; /* 16: File byte count. */ 11198542Smckusick u_int64_t di_blocks; /* 24: Bytes actually held. */ 11298542Smckusick ufs_time_t di_atime; /* 32: Last access time. */ 11398542Smckusick ufs_time_t di_mtime; /* 40: Last modified time. */ 11498542Smckusick ufs_time_t di_ctime; /* 48: Last inode change time. */ 11598542Smckusick ufs_time_t di_createtime; /* 56: Last inode change time. */ 11698542Smckusick int32_t di_mtimensec; /* 64: Last modified time. */ 11798542Smckusick int32_t di_atimensec; /* 68: Last access time. */ 11898542Smckusick int32_t di_ctimensec; /* 72: Last inode change time. */ 11998542Smckusick int32_t di_creatensec; /* 76: Last inode change time. */ 12098542Smckusick int32_t di_gen; /* 80: Generation number. */ 12198542Smckusick u_int32_t di_kernflags; /* 84: Kernel flags. */ 12298542Smckusick u_int32_t di_flags; /* 88: Status flags (chflags). */ 12398542Smckusick int32_t di_extsize; /* 92: External attributes block. */ 12498542Smckusick ufs2_daddr_t di_extb[NXADDR];/* 96: External attributes block. */ 12598542Smckusick ufs2_daddr_t di_db[NDADDR]; /* 112: Direct disk blocks. */ 12698542Smckusick ufs2_daddr_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */ 12798542Smckusick int64_t di_spare[3]; /* 232: Reserved; currently unused */ 12898542Smckusick}; 12998542Smckusick 13098542Smckusick/* 13198542Smckusick * The di_db fields may be overlaid with other information for 13298542Smckusick * file types that do not have associated disk storage. Block 13398542Smckusick * and character devices overlay the first data block with their 13498542Smckusick * dev_t value. Short symbolic links place their path in the 13598542Smckusick * di_db area. 13698542Smckusick */ 13798542Smckusick#define di_rdev di_db[0] 13898542Smckusick 13998542Smckusick/* 14098542Smckusick * A UFS1 dinode contains all the meta-data associated with a UFS1 file. 14198542Smckusick * This structure defines the on-disk format of a UFS1 dinode. Since 14298542Smckusick * this structure describes an on-disk structure, all its fields 14398542Smckusick * are defined by types with precise widths. 14498542Smckusick */ 14598542Smckusickstruct ufs1_dinode { 14698542Smckusick u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 14798542Smckusick int16_t di_nlink; /* 2: File link count. */ 1481541Srgrimes union { 14922521Sdyson u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ 1501541Srgrimes } di_u; 15122521Sdyson u_int64_t di_size; /* 8: File byte count. */ 15222521Sdyson int32_t di_atime; /* 16: Last access time. */ 15322521Sdyson int32_t di_atimensec; /* 20: Last access time. */ 15422521Sdyson int32_t di_mtime; /* 24: Last modified time. */ 15522521Sdyson int32_t di_mtimensec; /* 28: Last modified time. */ 15622521Sdyson int32_t di_ctime; /* 32: Last inode change time. */ 15722521Sdyson int32_t di_ctimensec; /* 36: Last inode change time. */ 15898542Smckusick ufs1_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */ 15998542Smckusick ufs1_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ 16022521Sdyson u_int32_t di_flags; /* 100: Status flags (chflags). */ 16122521Sdyson int32_t di_blocks; /* 104: Blocks actually held. */ 16222521Sdyson int32_t di_gen; /* 108: Generation number. */ 16322521Sdyson u_int32_t di_uid; /* 112: File owner. */ 16422521Sdyson u_int32_t di_gid; /* 116: File group. */ 16522521Sdyson int32_t di_spare[2]; /* 120: Reserved; currently unused */ 1661541Srgrimes}; 1671541Srgrimes#define di_ogid di_u.oldids[1] 1681541Srgrimes#define di_ouid di_u.oldids[0] 1691541Srgrimes 17098542Smckusick#endif /* _UFS_UFS_DINODE_H_ */ 171