1 /* $OpenBSD: dinode.h,v 1.19 2020/05/28 15:48:29 otto Exp $ */ 2 /* $NetBSD: dinode.h,v 1.7 1995/06/15 23:22:48 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 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 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)dinode.h 8.9 (Berkeley) 3/29/95 38 */ 39 40 #ifndef _UFS_DINODE_H_ 41 #define _UFS_DINODE_H_ 42 43 /* 44 * UFS directories use 32bit inode numbers internally, regardless 45 * of what the system on top of it uses. 46 */ 47 typedef u_int32_t ufsino_t; 48 49 /* 50 * The root inode is the root of the file system. Inode 0 can't be used for 51 * normal purposes and historically bad blocks were linked to inode 1, thus 52 * the root inode is 2. (Inode 1 is no longer used for this purpose, however 53 * numerous dump tapes make this assumption, so we are stuck with it). 54 */ 55 #define ROOTINO ((ufsino_t)2) 56 57 /* 58 * A dinode contains all the meta-data associated with a UFS file. 59 * This structure defines the on-disk format of a dinode. Since 60 * this structure describes an on-disk structure, all its fields 61 * are defined by types with precise widths. 62 */ 63 #define NXADDR 2 /* External addresses in inode */ 64 #define NDADDR 12 /* Direct addresses in inode. */ 65 #define NIADDR 3 /* Indirect addresses in inode. */ 66 67 struct ufs1_dinode { 68 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 69 int16_t di_nlink; /* 2: File link count. */ 70 union { 71 u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ 72 u_int32_t inumber; /* 4: Lfs: inode number. */ 73 } di_u; 74 u_int64_t di_size; /* 8: File byte count. */ 75 int32_t di_atime; /* 16: Last access time. */ 76 int32_t di_atimensec; /* 20: Last access time. */ 77 int32_t di_mtime; /* 24: Last modified time. */ 78 int32_t di_mtimensec; /* 28: Last modified time. */ 79 int32_t di_ctime; /* 32: Last inode change time. */ 80 int32_t di_ctimensec; /* 36: Last inode change time. */ 81 int32_t di_db[NDADDR]; /* 40: Direct disk blocks. */ 82 int32_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ 83 u_int32_t di_flags; /* 100: Status flags (chflags). */ 84 int32_t di_blocks; /* 104: Blocks actually held. */ 85 u_int32_t di_gen; /* 108: Generation number. */ 86 u_int32_t di_uid; /* 112: File owner. */ 87 u_int32_t di_gid; /* 116: File group. */ 88 int32_t di_spare[2]; /* 120: Reserved; currently unused */ 89 }; 90 91 struct ufs2_dinode { 92 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ 93 int16_t di_nlink; /* 2: File link count. */ 94 u_int32_t di_uid; /* 4: File owner. */ 95 u_int32_t di_gid; /* 8: File group. */ 96 u_int32_t di_blksize; /* 12: Inode blocksize. */ 97 u_int64_t di_size; /* 16: File byte count. */ 98 u_int64_t di_blocks; /* 24: Bytes actually held. */ 99 int64_t di_atime; /* 32: Last access time. */ 100 int64_t di_mtime; /* 40: Last modified time. */ 101 int64_t di_ctime; /* 48: Last inode change time. */ 102 int64_t di_birthtime; /* 56: Inode creation time. */ 103 int32_t di_mtimensec; /* 64: Last modified time. */ 104 int32_t di_atimensec; /* 68: Last access time. */ 105 int32_t di_ctimensec; /* 72: Last inode change time. */ 106 int32_t di_birthnsec; /* 76: Inode creation time. */ 107 int32_t di_gen; /* 80: Generation number. */ 108 u_int32_t di_kernflags; /* 84: Kernel flags. */ 109 u_int32_t di_flags; /* 88: Status flags (chflags). */ 110 int32_t di_extsize; /* 92: External attributes block. */ 111 int64_t di_extb[NXADDR];/* 96: External attributes block. */ 112 int64_t di_db[NDADDR]; /* 112: Direct disk blocks. */ 113 int64_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */ 114 int64_t di_spare[3]; /* 232: Reserved; currently unused */ 115 }; 116 117 /* 118 * The di_db fields may be overlaid with other information for 119 * file types that do not have associated disk storage. Block 120 * and character devices overlay the first data block with their 121 * dev_t value. Short symbolic links place their path in the 122 * di_db area. 123 */ 124 #define di_inumber di_u.inumber 125 #define di_ogid di_u.oldids[1] 126 #define di_ouid di_u.oldids[0] 127 #define di_rdev di_db[0] 128 #define di_shortlink di_db 129 130 #define MAXSYMLINKLEN_UFS1 ((NDADDR + NIADDR) * sizeof(int32_t)) 131 #define MAXSYMLINKLEN_UFS2 ((NDADDR + NIADDR) * sizeof(int64_t)) 132 133 #define MAXSYMLINKLEN(ip) \ 134 ((ip)->i_ump->um_fstype == UM_UFS1) ? \ 135 MAXSYMLINKLEN_UFS1 : MAXSYMLINKLEN_UFS2 136 137 /* File permissions. */ 138 #define IEXEC 0000100 /* Executable. */ 139 #define IWRITE 0000200 /* Writeable. */ 140 #define IREAD 0000400 /* Readable. */ 141 #define ISVTX 0001000 /* Sticky bit. */ 142 #define ISGID 0002000 /* Set-gid. */ 143 #define ISUID 0004000 /* Set-uid. */ 144 145 /* File types. */ 146 #define IFMT 0170000 /* Mask of file type. */ 147 #define IFIFO 0010000 /* Named pipe (fifo). */ 148 #define IFCHR 0020000 /* Character device. */ 149 #define IFDIR 0040000 /* Directory file. */ 150 #define IFBLK 0060000 /* Block device. */ 151 #define IFREG 0100000 /* Regular file. */ 152 #define IFLNK 0120000 /* Symbolic link. */ 153 #define IFSOCK 0140000 /* UNIX domain socket. */ 154 #define IFWHT 0160000 /* Whiteout. */ 155 156 #endif /* _UFS_DINODE_H_ */ 157