1 /* $NetBSD: dinode.h,v 1.25 2016/01/22 23:06:10 dholland Exp $ */ 2 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 * Copyright (c) 1982, 1989, 1993 14 * The Regents of the University of California. All rights reserved. 15 * (c) UNIX System Laboratories, Inc. 16 * All or some portions of this file are derived from material licensed 17 * to the University of California by American Telephone and Telegraph 18 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 19 * the permission of UNIX System Laboratories, Inc. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. Neither the name of the University nor the names of its contributors 30 * may be used to endorse or promote products derived from this software 31 * without specific prior written permission. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 * 45 * @(#)dinode.h 8.9 (Berkeley) 3/29/95 46 */ 47 48 /* 49 * NOTE: COORDINATE ON-DISK FORMAT CHANGES WITH THE FREEBSD PROJECT. 50 */ 51 52 #ifndef _UFS_UFS_DINODE_H_ 53 #define _UFS_UFS_DINODE_H_ 54 55 /* 56 * The root inode is the root of the file system. Inode 0 can't be used for 57 * normal purposes and historically bad blocks were linked to inode 1, thus 58 * the root inode is 2. (Inode 1 is no longer used for this purpose, however 59 * numerous dump tapes make this assumption, so we are stuck with it). 60 */ 61 #define UFS_ROOTINO ((ino_t)2) 62 63 /* 64 * The Whiteout inode# is a dummy non-zero inode number which will 65 * never be allocated to a real file. It is used as a place holder 66 * in the directory entry which has been tagged as a DT_W entry. 67 * See the comments about UFS_ROOTINO above. 68 */ 69 #define UFS_WINO ((ino_t)1) 70 71 /* 72 * A dinode contains all the meta-data associated with a UFS file. 73 * This structure defines the on-disk format of a dinode. Since 74 * this structure describes an on-disk structure, all its fields 75 * are defined by types with precise widths. 76 */ 77 78 #define UFS_NXADDR 2 79 #define UFS_NDADDR 12 /* Direct addresses in inode. */ 80 #define UFS_NIADDR 3 /* Indirect addresses in inode. */ 81 82 struct ufs1_dinode { 83 uint16_t di_mode; /* 0: IFMT, permissions; see below. */ 84 int16_t di_nlink; /* 2: File link count. */ 85 uint16_t di_oldids[2]; /* 4: Ffs: old user and group ids. */ 86 uint64_t di_size; /* 8: File byte count. */ 87 int32_t di_atime; /* 16: Last access time. */ 88 int32_t di_atimensec; /* 20: Last access time. */ 89 int32_t di_mtime; /* 24: Last modified time. */ 90 int32_t di_mtimensec; /* 28: Last modified time. */ 91 int32_t di_ctime; /* 32: Last inode change time. */ 92 int32_t di_ctimensec; /* 36: Last inode change time. */ 93 int32_t di_db[UFS_NDADDR]; /* 40: Direct disk blocks. */ 94 int32_t di_ib[UFS_NIADDR]; /* 88: Indirect disk blocks. */ 95 uint32_t di_flags; /* 100: Status flags (chflags). */ 96 uint32_t di_blocks; /* 104: Blocks actually held. */ 97 int32_t di_gen; /* 108: Generation number. */ 98 uint32_t di_uid; /* 112: File owner. */ 99 uint32_t di_gid; /* 116: File group. */ 100 uint64_t di_modrev; /* 120: i_modrev for NFSv4 */ 101 }; 102 103 struct ufs2_dinode { 104 uint16_t di_mode; /* 0: IFMT, permissions; see below. */ 105 int16_t di_nlink; /* 2: File link count. */ 106 uint32_t di_uid; /* 4: File owner. */ 107 uint32_t di_gid; /* 8: File group. */ 108 uint32_t di_blksize; /* 12: Inode blocksize. */ 109 uint64_t di_size; /* 16: File byte count. */ 110 uint64_t di_blocks; /* 24: Bytes actually held. */ 111 int64_t di_atime; /* 32: Last access time. */ 112 int64_t di_mtime; /* 40: Last modified time. */ 113 int64_t di_ctime; /* 48: Last inode change time. */ 114 int64_t di_birthtime; /* 56: Inode creation time. */ 115 int32_t di_mtimensec; /* 64: Last modified time. */ 116 int32_t di_atimensec; /* 68: Last access time. */ 117 int32_t di_ctimensec; /* 72: Last inode change time. */ 118 int32_t di_birthnsec; /* 76: Inode creation time. */ 119 int32_t di_gen; /* 80: Generation number. */ 120 uint32_t di_kernflags; /* 84: Kernel flags. */ 121 uint32_t di_flags; /* 88: Status flags (chflags). */ 122 int32_t di_extsize; /* 92: External attributes block. */ 123 int64_t di_extb[UFS_NXADDR];/* 96: External attributes block. */ 124 int64_t di_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ 125 int64_t di_ib[UFS_NIADDR]; /* 208: Indirect disk blocks. */ 126 uint64_t di_modrev; /* 232: i_modrev for NFSv4 */ 127 int64_t di_spare[2]; /* 240: Reserved; currently unused */ 128 }; 129 130 /* 131 * The di_db fields may be overlaid with other information for 132 * file types that do not have associated disk storage. Block 133 * and character devices overlay the first data block with their 134 * dev_t value. Short symbolic links place their path in the 135 * di_db area. 136 */ 137 #define di_ogid di_oldids[1] 138 #define di_ouid di_oldids[0] 139 #define di_rdev di_db[0] 140 #define UFS1_MAXSYMLINKLEN ((UFS_NDADDR + UFS_NIADDR) * sizeof(int32_t)) 141 #define UFS2_MAXSYMLINKLEN ((UFS_NDADDR + UFS_NIADDR) * sizeof(int64_t)) 142 143 #define UFS_MAXSYMLINKLEN(ip) \ 144 ((ip)->i_ump->um_fstype == UFS1) ? \ 145 UFS1_MAXSYMLINKLEN : UFS2_MAXSYMLINKLEN 146 147 /* NeXT used to keep short symlinks in the inode even when using 148 * FS_42INODEFMT. In that case fs->fs_maxsymlinklen is probably -1, 149 * but short symlinks were stored in inodes shorter than this: 150 */ 151 #define APPLEUFS_MAXSYMLINKLEN 60 152 153 /* File permissions. */ 154 #define IEXEC 0000100 /* Executable. */ 155 #define IWRITE 0000200 /* Writable. */ 156 #define IREAD 0000400 /* Readable. */ 157 #define ISVTX 0001000 /* Sticky bit. */ 158 #define ISGID 0002000 /* Set-gid. */ 159 #define ISUID 0004000 /* Set-uid. */ 160 161 /* File types. */ 162 #define IFMT 0170000 /* Mask of file type. */ 163 #define IFIFO 0010000 /* Named pipe (fifo). */ 164 #define IFCHR 0020000 /* Character device. */ 165 #define IFDIR 0040000 /* Directory file. */ 166 #define IFBLK 0060000 /* Block device. */ 167 #define IFREG 0100000 /* Regular file. */ 168 #define IFLNK 0120000 /* Symbolic link. */ 169 #define IFSOCK 0140000 /* UNIX domain socket. */ 170 #define IFWHT 0160000 /* Whiteout. */ 171 172 /* Size of the on-disk inode. */ 173 #define DINODE1_SIZE (sizeof(struct ufs1_dinode)) /* 128 */ 174 #define DINODE2_SIZE (sizeof(struct ufs2_dinode)) 175 176 #endif /* !_UFS_UFS_DINODE_H_ */ 177
Indexes created Sat Sep 20 22:09:52 GMT 2025