1 /*- 2 * SPDX-License-Identifier: (BSD-2-Clause-FreeBSD AND BSD-3-Clause) 3 * 4 * Copyright (c) 2002 Networks Associates Technology, Inc. 5 * All rights reserved. 6 * 7 * This software was developed for the FreeBSD Project by Marshall 8 * Kirk McKusick and Network Associates Laboratories, the Security 9 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 10 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 11 * research program 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Copyright (c) 1982, 1989, 1993 35 * The Regents of the University of California. All rights reserved. 36 * (c) UNIX System Laboratories, Inc. 37 * All or some portions of this file are derived from material licensed 38 * to the University of California by American Telephone and Telegraph 39 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 40 * the permission of UNIX System Laboratories, Inc. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. The names of the authors may not be used to endorse or promote 51 * products derived from this software without specific prior written 52 * permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 8.3 (Berkeley) 1/21/94 67 * $FreeBSD$ 68 */ 69 70 #ifndef _UFS_UFS_DINODE_H_ 71 #define _UFS_UFS_DINODE_H_ 72 73 /* 74 * The root inode is the root of the filesystem. 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 UFS_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_WHT entry. 85 * See the comments about UFS_ROOTINO above. 86 */ 87 #define UFS_WINO ((ino_t)1) 88 89 /* 90 * The size of physical and logical block numbers and time fields in UFS. 91 */ 92 typedef int32_t ufs1_daddr_t; 93 typedef int64_t ufs2_daddr_t; 94 typedef int64_t ufs_lbn_t; 95 typedef int64_t ufs_time_t; 96 97 /* File permissions. */ 98 #define IEXEC 0000100 /* Executable. */ 99 #define IWRITE 0000200 /* Writeable. */ 100 #define IREAD 0000400 /* Readable. */ 101 #define ISVTX 0001000 /* Sticky bit. */ 102 #define ISGID 0002000 /* Set-gid. */ 103 #define ISUID 0004000 /* Set-uid. */ 104 105 /* File types. */ 106 #define IFMT 0170000 /* Mask of file type. */ 107 #define IFIFO 0010000 /* Named pipe (fifo). */ 108 #define IFCHR 0020000 /* Character device. */ 109 #define IFDIR 0040000 /* Directory file. */ 110 #define IFBLK 0060000 /* Block device. */ 111 #define IFREG 0100000 /* Regular file. */ 112 #define IFLNK 0120000 /* Symbolic link. */ 113 #define IFSOCK 0140000 /* UNIX domain socket. */ 114 #define IFWHT 0160000 /* Whiteout. */ 115 116 /* 117 * A dinode contains all the meta-data associated with a UFS2 file. 118 * This structure defines the on-disk format of a dinode. Since 119 * this structure describes an on-disk structure, all its fields 120 * are defined by types with precise widths. 121 */ 122 123 #define UFS_NXADDR 2 /* External addresses in inode. */ 124 #define UFS_NDADDR 12 /* Direct addresses in inode. */ 125 #define UFS_NIADDR 3 /* Indirect addresses in inode. */ 126 127 struct ufs2_dinode { 128 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 129 int16_t di_nlink; /* 2: File link count. */ 130 u_int32_t di_uid; /* 4: File owner. */ 131 u_int32_t di_gid; /* 8: File group. */ 132 u_int32_t di_blksize; /* 12: Inode blocksize. */ 133 u_int64_t di_size; /* 16: File byte count. */ 134 u_int64_t di_blocks; /* 24: Blocks actually held. */ 135 ufs_time_t di_atime; /* 32: Last access time. */ 136 ufs_time_t di_mtime; /* 40: Last modified time. */ 137 ufs_time_t di_ctime; /* 48: Last inode change time. */ 138 ufs_time_t di_birthtime; /* 56: Inode creation time. */ 139 int32_t di_mtimensec; /* 64: Last modified time. */ 140 int32_t di_atimensec; /* 68: Last access time. */ 141 int32_t di_ctimensec; /* 72: Last inode change time. */ 142 int32_t di_birthnsec; /* 76: Inode creation time. */ 143 u_int32_t di_gen; /* 80: Generation number. */ 144 u_int32_t di_kernflags; /* 84: Kernel flags. */ 145 u_int32_t di_flags; /* 88: Status flags (chflags). */ 146 u_int32_t di_extsize; /* 92: External attributes size. */ 147 ufs2_daddr_t di_extb[UFS_NXADDR];/* 96: External attributes block. */ 148 union { 149 struct { 150 ufs2_daddr_t di_db /* 112: Direct disk blocks. */ 151 [UFS_NDADDR]; 152 ufs2_daddr_t di_ib /* 208: Indirect disk blocks. */ 153 [UFS_NIADDR]; 154 }; 155 char di_shortlink /* 112: Embedded symbolic link. */ 156 [(UFS_NDADDR + UFS_NIADDR) * sizeof(ufs2_daddr_t)]; 157 }; 158 u_int64_t di_modrev; /* 232: i_modrev for NFSv4 */ 159 uint32_t di_freelink; /* 240: SUJ: Next unlinked inode. */ 160 uint32_t di_ckhash; /* 244: if CK_INODE, its check-hash */ 161 uint32_t di_spare[2]; /* 248: Reserved; currently unused */ 162 }; 163 164 /* 165 * The di_db fields may be overlaid with other information for 166 * file types that do not have associated disk storage. Block 167 * and character devices overlay the first data block with their 168 * dev_t value. Short symbolic links place their path in the 169 * di_db area. 170 */ 171 #define di_rdev di_db[0] 172 173 /* 174 * A UFS1 dinode contains all the meta-data associated with a UFS1 file. 175 * This structure defines the on-disk format of a UFS1 dinode. Since 176 * this structure describes an on-disk structure, all its fields 177 * are defined by types with precise widths. 178 */ 179 struct ufs1_dinode { 180 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 181 int16_t di_nlink; /* 2: File link count. */ 182 uint32_t di_freelink; /* 4: SUJ: Next unlinked inode. */ 183 u_int64_t di_size; /* 8: File byte count. */ 184 int32_t di_atime; /* 16: Last access time. */ 185 int32_t di_atimensec; /* 20: Last access time. */ 186 int32_t di_mtime; /* 24: Last modified time. */ 187 int32_t di_mtimensec; /* 28: Last modified time. */ 188 int32_t di_ctime; /* 32: Last inode change time. */ 189 int32_t di_ctimensec; /* 36: Last inode change time. */ 190 union { 191 struct { 192 ufs1_daddr_t di_db /* 40: Direct disk blocks. */ 193 [UFS_NDADDR]; 194 ufs1_daddr_t di_ib /* 88: Indirect disk blocks. */ 195 [UFS_NIADDR]; 196 }; 197 char di_shortlink /* 40: Embedded symbolic link. */ 198 [(UFS_NDADDR + UFS_NIADDR) * sizeof(ufs1_daddr_t)]; 199 }; 200 u_int32_t di_flags; /* 100: Status flags (chflags). */ 201 u_int32_t di_blocks; /* 104: Blocks actually held. */ 202 u_int32_t di_gen; /* 108: Generation number. */ 203 u_int32_t di_uid; /* 112: File owner. */ 204 u_int32_t di_gid; /* 116: File group. */ 205 u_int64_t di_modrev; /* 120: i_modrev for NFSv4 */ 206 }; 207 208 #define UFS_LINK_MAX 32767 209 210 #endif /* _UFS_UFS_DINODE_H_ */ 211