1/* 2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29/* 30 * Copyright (c) 1982, 1989, 1993 31 * The Regents of the University of California. All rights reserved. 32 * (c) UNIX System Laboratories, Inc. 33 * All or some portions of this file are derived from material licensed 34 * to the University of California by American Telephone and Telegraph 35 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 36 * the permission of UNIX System Laboratories, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)dinode.h 8.9 (Berkeley) 3/29/95 67 */ 68#ifndef _UFS_DINODE_H_ 69#define _UFS_DINODE_H_ 70 71#include <sys/appleapiopts.h> 72 73 74#ifdef __APPLE_API_UNSTABLE 75/* 76 * The root inode is the root of the file system. Inode 0 can't be used for 77 * normal purposes and historically bad blocks were linked to inode 1, thus 78 * the root inode is 2. (Inode 1 is no longer used for this purpose, however 79 * numerous dump tapes make this assumption, so we are stuck with it). 80 */ 81#define ROOTINO ((ino_t)2) 82 83/* 84 * The Whiteout inode# is a dummy non-zero inode number which will 85 * never be allocated to a real file. It is used as a place holder 86 * in the directory entry which has been tagged as a DT_W entry. 87 * See the comments about ROOTINO above. 88 */ 89#define WINO ((ino_t)1) 90 91/* 92 * A dinode contains all the meta-data associated with a UFS file. 93 * This structure defines the on-disk format of a dinode. Since 94 * this structure describes an on-disk structure, all its fields 95 * are defined by types with precise widths. 96 */ 97 98#define NDADDR 12 /* Direct addresses in inode. */ 99#define NIADDR 3 /* Indirect addresses in inode. */ 100 101typedef int32_t ufs_daddr_t; 102 103struct dinode { 104 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 105 int16_t di_nlink; /* 2: File link count. */ 106 union { 107 u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ 108 int32_t inumber; /* 4: Lfs: inode number. */ 109 } di_u; 110 u_int64_t di_size; /* 8: File byte count. */ 111 int32_t di_atime; /* 16: Last access time. */ 112 int32_t di_atimensec; /* 20: Last access time. */ 113 int32_t di_mtime; /* 24: Last modified time. */ 114 int32_t di_mtimensec; /* 28: Last modified time. */ 115 int32_t di_ctime; /* 32: Last inode change time. */ 116 int32_t di_ctimensec; /* 36: Last inode change time. */ 117 ufs_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */ 118 ufs_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ 119 u_int32_t di_flags; /* 100: Status flags (chflags). */ 120 u_int32_t di_blocks; /* 104: Blocks actually held. */ 121 int32_t di_gen; /* 108: Generation number. */ 122 u_int32_t di_uid; /* 112: File owner. */ 123 u_int32_t di_gid; /* 116: File group. */ 124 int32_t di_spare[2]; /* 120: Reserved; currently unused */ 125}; 126 127/* 128 * The di_db fields may be overlaid with other information for 129 * file types that do not have associated disk storage. Block 130 * and character devices overlay the first data block with their 131 * dev_t value. Short symbolic links place their path in the 132 * di_db area. 133 */ 134#define di_inumber di_u.inumber 135#define di_ogid di_u.oldids[1] 136#define di_ouid di_u.oldids[0] 137#define di_rdev di_db[0] 138#define di_shortlink di_db 139#define MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(ufs_daddr_t)) 140 141/* File permissions. */ 142#define IEXEC 0000100 /* Executable. */ 143#define IWRITE 0000200 /* Writeable. */ 144#define IREAD 0000400 /* Readable. */ 145#define ISVTX 0001000 /* Sticky bit. */ 146#define ISGID 0002000 /* Set-gid. */ 147#define ISUID 0004000 /* Set-uid. */ 148 149/* File types. */ 150#define IFMT 0170000 /* Mask of file type. */ 151#define IFIFO 0010000 /* Named pipe (fifo). */ 152#define IFCHR 0020000 /* Character device. */ 153#define IFDIR 0040000 /* Directory file. */ 154#define IFBLK 0060000 /* Block device. */ 155#define IFREG 0100000 /* Regular file. */ 156#define IFLNK 0120000 /* Symbolic link. */ 157#define IFSOCK 0140000 /* UNIX domain socket. */ 158#define IFWHT 0160000 /* Whiteout. */ 159 160#endif /* __APPLE_API_UNSTABLE */ 161#endif /* ! _UFS_DINODE_H_ */ 162