1 /* 2 * Copyright (c) 2002 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by Marshall 6 * Kirk McKusick and Network Associates Laboratories, the Security 7 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 8 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 9 * research program 10 * 11 * Copyright (c) 1982, 1989, 1993 12 * The Regents of the University of California. All rights reserved. 13 * (c) UNIX System Laboratories, Inc. 14 * All or some portions of this file are derived from material licensed 15 * to the University of California by American Telephone and Telegraph 16 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 17 * the permission of UNIX System Laboratories, Inc. 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 1. Redistributions of source code must retain the above copyright 23 * notice, this list of conditions and the following disclaimer. 24 * 2. Redistributions in binary form must reproduce the above copyright 25 * notice, this list of conditions and the following disclaimer in the 26 * documentation and/or other materials provided with the distribution. 27 * 3. The names of the authors may not be used to endorse or promote 28 * products derived from this software without specific prior written 29 * permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41 * SUCH DAMAGE. 42 * 43 * @(#)dinode.h 8.3 (Berkeley) 1/21/94 44 * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.11 2002/07/16 22:36:00 mckusick Exp $ 45 * $DragonFly: src/sys/boot/common/dinode.h,v 1.2 2006/09/10 01:26:30 dillon Exp $ 46 */ 47 48 #ifndef _UFS_UFS_DINODE_H_ 49 #define _UFS_UFS_DINODE_H_ 50 51 /* 52 * The root inode is the root of the filesystem. Inode 0 can't be used for 53 * normal purposes and historically bad blocks were linked to inode 1, thus 54 * the root inode is 2. (Inode 1 is no longer used for this purpose, however 55 * numerous dump tapes make this assumption, so we are stuck with it). 56 */ 57 #define ROOTINO ((ino_t)2) 58 59 /* 60 * The Whiteout inode# is a dummy non-zero inode number which will 61 * never be allocated to a real file. It is used as a place holder 62 * in the directory entry which has been tagged as a DT_W entry. 63 * See the comments about ROOTINO above. 64 */ 65 #define WINO ((ino_t)1) 66 67 /* 68 * The size of physical and logical block numbers and time fields in UFS. 69 */ 70 typedef int32_t ufs1_daddr_t; 71 typedef int64_t ufs2_daddr_t; 72 typedef int64_t ufs_lbn_t; 73 typedef int64_t ufs_time_t; 74 typedef uint32_t ufs_ino_t; 75 76 /* File permissions. */ 77 #define IEXEC 0000100 /* Executable. */ 78 #define IWRITE 0000200 /* Writeable. */ 79 #define IREAD 0000400 /* Readable. */ 80 #define ISVTX 0001000 /* Sticky bit. */ 81 #define ISGID 0002000 /* Set-gid. */ 82 #define ISUID 0004000 /* Set-uid. */ 83 84 /* File types. */ 85 #define IFMT 0170000 /* Mask of file type. */ 86 #define IFIFO 0010000 /* Named pipe (fifo). */ 87 #define IFCHR 0020000 /* Character device. */ 88 #define IFDIR 0040000 /* Directory file. */ 89 #define IFBLK 0060000 /* Block device. */ 90 #define IFREG 0100000 /* Regular file. */ 91 #define IFLNK 0120000 /* Symbolic link. */ 92 #define IFSOCK 0140000 /* UNIX domain socket. */ 93 #define IFWHT 0160000 /* Whiteout. */ 94 95 /* 96 * A dinode contains all the meta-data associated with a UFS2 file. 97 * This structure defines the on-disk format of a dinode. Since 98 * this structure describes an on-disk structure, all its fields 99 * are defined by types with precise widths. 100 */ 101 102 #define NXADDR 2 /* External addresses in inode. */ 103 #define NDADDR 12 /* Direct addresses in inode. */ 104 #define NIADDR 3 /* Indirect addresses in inode. */ 105 106 struct ufs2_dinode { 107 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 108 int16_t di_nlink; /* 2: File link count. */ 109 u_int32_t di_uid; /* 4: File owner. */ 110 u_int32_t di_gid; /* 8: File group. */ 111 u_int32_t di_blksize; /* 12: Inode blocksize. */ 112 u_int64_t di_size; /* 16: File byte count. */ 113 u_int64_t di_blocks; /* 24: Bytes actually held. */ 114 ufs_time_t di_atime; /* 32: Last access time. */ 115 ufs_time_t di_mtime; /* 40: Last modified time. */ 116 ufs_time_t di_ctime; /* 48: Last inode change time. */ 117 ufs_time_t di_birthtime; /* 56: Inode creation time. */ 118 int32_t di_mtimensec; /* 64: Last modified time. */ 119 int32_t di_atimensec; /* 68: Last access time. */ 120 int32_t di_ctimensec; /* 72: Last inode change time. */ 121 int32_t di_birthnsec; /* 76: Inode creation time. */ 122 int32_t di_gen; /* 80: Generation number. */ 123 u_int32_t di_kernflags; /* 84: Kernel flags. */ 124 u_int32_t di_flags; /* 88: Status flags (chflags). */ 125 int32_t di_extsize; /* 92: External attributes block. */ 126 ufs2_daddr_t di_extb[NXADDR];/* 96: External attributes block. */ 127 ufs2_daddr_t di_db[NDADDR]; /* 112: Direct disk blocks. */ 128 ufs2_daddr_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */ 129 int64_t di_spare[3]; /* 232: Reserved; currently unused */ 130 }; 131 132 /* 133 * The di_db fields may be overlaid with other information for 134 * file types that do not have associated disk storage. Block 135 * and character devices overlay the first data block with their 136 * cdev_t value. Short symbolic links place their path in the 137 * di_db area. 138 */ 139 #define di_rdev di_db[0] 140 141 /* 142 * A UFS1 dinode contains all the meta-data associated with a UFS1 file. 143 * This structure defines the on-disk format of a UFS1 dinode. Since 144 * this structure describes an on-disk structure, all its fields 145 * are defined by types with precise widths. 146 */ 147 struct ufs1_dinode { 148 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 149 int16_t di_nlink; /* 2: File link count. */ 150 union { 151 u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ 152 } di_u; 153 u_int64_t di_size; /* 8: File byte count. */ 154 int32_t di_atime; /* 16: Last access time. */ 155 int32_t di_atimensec; /* 20: Last access time. */ 156 int32_t di_mtime; /* 24: Last modified time. */ 157 int32_t di_mtimensec; /* 28: Last modified time. */ 158 int32_t di_ctime; /* 32: Last inode change time. */ 159 int32_t di_ctimensec; /* 36: Last inode change time. */ 160 ufs1_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */ 161 ufs1_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ 162 u_int32_t di_flags; /* 100: Status flags (chflags). */ 163 int32_t di_blocks; /* 104: Blocks actually held. */ 164 int32_t di_gen; /* 108: Generation number. */ 165 u_int32_t di_uid; /* 112: File owner. */ 166 u_int32_t di_gid; /* 116: File group. */ 167 int32_t di_spare[2]; /* 120: Reserved; currently unused */ 168 }; 169 #define di_ogid di_u.oldids[1] 170 #define di_ouid di_u.oldids[0] 171 172 #endif /* _UFS_UFS_DINODE_H_ */ 173