| 1 | /*␊ |
| 2 | * Copyright (c) 2000-2008 Apple, 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 | ␊ |
| 72 | #ifdef __APPLE_API_UNSTABLE␊ |
| 73 | /*␊ |
| 74 | * The root inode is the root of the file system. Inode 0 can't be used for␊ |
| 75 | * normal purposes and historically bad blocks were linked to inode 1, thus␊ |
| 76 | * the root inode is 2. (Inode 1 is no longer used for this purpose, however␊ |
| 77 | * numerous dump tapes make this assumption, so we are stuck with it).␊ |
| 78 | */␊ |
| 79 | #define␉ROOTINO␉((ino_t)2)␊ |
| 80 | ␊ |
| 81 | /*␊ |
| 82 | * The Whiteout inode# is a dummy non-zero inode number which will␊ |
| 83 | * never be allocated to a real file. It is used as a place holder␊ |
| 84 | * in the directory entry which has been tagged as a DT_W entry.␊ |
| 85 | * See the comments about ROOTINO above.␊ |
| 86 | */␊ |
| 87 | #define␉WINO␉((ino_t)1)␊ |
| 88 | ␊ |
| 89 | /*␊ |
| 90 | * A dinode contains all the meta-data associated with a UFS file.␊ |
| 91 | * This structure defines the on-disk format of a dinode. Since␊ |
| 92 | * this structure describes an on-disk structure, all its fields␊ |
| 93 | * are defined by types with precise widths.␊ |
| 94 | */␊ |
| 95 | ␊ |
| 96 | #define␉NDADDR␉12␉␉␉/* Direct addresses in inode. */␊ |
| 97 | #define␉NIADDR␉3␉␉␉/* Indirect addresses in inode. */␊ |
| 98 | ␊ |
| 99 | typedef int32_t ␉ufs_daddr_t;␊ |
| 100 | ␊ |
| 101 | struct dinode {␊ |
| 102 | ␉u_int16_t␉di_mode;␉/* 0: IFMT, permissions; see below. */␊ |
| 103 | ␉int16_t␉␉di_nlink;␉/* 2: File link count. */␊ |
| 104 | ␉union {␊ |
| 105 | ␉␉u_int16_t oldids[2];␉/* 4: Ffs: old user and group ids. */␊ |
| 106 | ␉␉int32_t␉ inumber;␉/* 4: Lfs: inode number. */␊ |
| 107 | ␉} di_u;␊ |
| 108 | ␉u_int64_t␉di_size;␉/* 8: File byte count. */␊ |
| 109 | ␉int32_t␉␉di_atime;␉/* 16: Last access time. */␊ |
| 110 | ␉int32_t␉␉di_atimensec;␉/* 20: Last access time. */␊ |
| 111 | ␉int32_t␉␉di_mtime;␉/* 24: Last modified time. */␊ |
| 112 | ␉int32_t␉␉di_mtimensec;␉/* 28: Last modified time. */␊ |
| 113 | ␉int32_t␉␉di_ctime;␉/* 32: Last inode change time. */␊ |
| 114 | ␉int32_t␉␉di_ctimensec;␉/* 36: Last inode change time. */␊ |
| 115 | ␉ufs_daddr_t␉di_db[NDADDR];␉/* 40: Direct disk blocks. */␊ |
| 116 | ␉ufs_daddr_t␉di_ib[NIADDR];␉/* 88: Indirect disk blocks. */␊ |
| 117 | ␉u_int32_t␉di_flags;␉/* 100: Status flags (chflags). */␊ |
| 118 | ␉u_int32_t␉di_blocks;␉/* 104: Blocks actually held. */␊ |
| 119 | ␉int32_t␉␉di_gen;␉␉/* 108: Generation number. */␊ |
| 120 | ␉u_int32_t␉di_uid;␉␉/* 112: File owner. */␊ |
| 121 | ␉u_int32_t␉di_gid;␉␉/* 116: File group. */␊ |
| 122 | ␉int32_t␉␉di_spare[2];␉/* 120: Reserved; currently unused */␊ |
| 123 | } __attribute__((packed,aligned(4)));␊ |
| 124 | ␊ |
| 125 | /*␊ |
| 126 | * The di_db fields may be overlaid with other information for␊ |
| 127 | * file types that do not have associated disk storage. Block␊ |
| 128 | * and character devices overlay the first data block with their␊ |
| 129 | * dev_t value. Short symbolic links place their path in the␊ |
| 130 | * di_db area.␊ |
| 131 | */␊ |
| 132 | #define␉di_inumber␉di_u.inumber␊ |
| 133 | #define␉di_ogid␉␉di_u.oldids[1]␊ |
| 134 | #define␉di_ouid␉␉di_u.oldids[0]␊ |
| 135 | #define␉di_rdev␉␉di_db[0]␊ |
| 136 | #define␉di_shortlink␉di_db␊ |
| 137 | #define␉MAXSYMLINKLEN␉((NDADDR + NIADDR) * sizeof(ufs_daddr_t))␊ |
| 138 | ␊ |
| 139 | /* File permissions. */␊ |
| 140 | #define␉IEXEC␉␉0000100␉␉/* Executable. */␊ |
| 141 | #define␉IWRITE␉␉0000200␉␉/* Writeable. */␊ |
| 142 | #define␉IREAD␉␉0000400␉␉/* Readable. */␊ |
| 143 | #define␉ISVTX␉␉0001000␉␉/* Sticky bit. */␊ |
| 144 | #define␉ISGID␉␉0002000␉␉/* Set-gid. */␊ |
| 145 | #define␉ISUID␉␉0004000␉␉/* Set-uid. */␊ |
| 146 | ␊ |
| 147 | /* File types. */␊ |
| 148 | #define␉IFMT␉␉0170000␉␉/* Mask of file type. */␊ |
| 149 | #define␉IFIFO␉␉0010000␉␉/* Named pipe (fifo). */␊ |
| 150 | #define␉IFCHR␉␉0020000␉␉/* Character device. */␊ |
| 151 | #define␉IFDIR␉␉0040000␉␉/* Directory file. */␊ |
| 152 | #define␉IFBLK␉␉0060000␉␉/* Block device. */␊ |
| 153 | #define␉IFREG␉␉0100000␉␉/* Regular file. */␊ |
| 154 | #define␉IFLNK␉␉0120000␉␉/* Symbolic link. */␊ |
| 155 | #define␉IFSOCK␉␉0140000␉␉/* UNIX domain socket. */␊ |
| 156 | #define␉IFWHT␉␉0160000␉␉/* Whiteout. */␊ |
| 157 | ␊ |
| 158 | #endif /* __APPLE_API_UNSTABLE */␊ |
| 159 | #endif /* ! _UFS_DINODE_H_ */␊ |
| 160 | |
