1 /*- 2 * Copyright (c) 1982, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 * @(#)dinode.h 8.3 (Berkeley) 1/21/94 35 * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.7 1999/08/28 00:52:27 peter Exp $ 36 */ 37 38 #ifndef _VFS_UFS_DINODE_H_ 39 #define _VFS_UFS_DINODE_H_ 40 41 #include "ufs_types.h" 42 43 /* 44 * The root inode is the root of the filesystem. Inode 0 can't be used for 45 * normal purposes and historically bad blocks were linked to inode 1, thus 46 * the root inode is 2. (Inode 1 is no longer used for this purpose, however 47 * numerous dump tapes make this assumption, so we are stuck with it). 48 */ 49 #define UFS_ROOTINO ((ino_t)2) 50 51 /* 52 * The Whiteout inode# is a dummy non-zero inode number which will 53 * never be allocated to a real file. It is used as a place holder 54 * in the directory entry which has been tagged as a DT_W entry. 55 * See the comments about UFS_ROOTINO above. 56 */ 57 #define UFS_WINO ((ino_t)1) 58 59 /* 60 * A dinode contains all the meta-data associated with a UFS file. 61 * This structure defines the on-disk format of a dinode. Since 62 * this structure describes an on-disk structure, all its fields 63 * are defined by types with precise widths. 64 */ 65 66 #define UFS_NDADDR 12 /* Direct addresses in inode. */ 67 #define UFS_NIADDR 3 /* Indirect addresses in inode. */ 68 69 struct ufs1_dinode { 70 uint16_t di_mode; /* 0: IFMT, permissions; see below. */ 71 int16_t di_nlink; /* 2: File link count. */ 72 union { 73 uint16_t oldids[2]; /* 4: Ffs: old user and group ids. */ 74 int32_t inumber; /* 4: Lfs: inode number. */ 75 } di_u; 76 uint64_t di_size; /* 8: File byte count. */ 77 uint32_t di_atime; /* 16: Last access time. */ 78 uint32_t di_atimensec; /* 20: Last access time. */ 79 uint32_t di_mtime; /* 24: Last modified time. */ 80 uint32_t di_mtimensec; /* 28: Last modified time. */ 81 uint32_t di_ctime; /* 32: Last inode change time. */ 82 uint32_t di_ctimensec; /* 36: Last inode change time. */ 83 ufs_daddr_t di_db[UFS_NDADDR]; /* 40: Direct disk blocks. */ 84 ufs_daddr_t di_ib[UFS_NIADDR]; /* 88: Indirect disk blocks. */ 85 uint32_t di_flags; /* 100: Status flags (chflags). */ 86 int32_t di_blocks; /* 104: Blocks actually held. */ 87 int32_t di_gen; /* 108: Generation number. */ 88 uint32_t di_uid; /* 112: File owner. */ 89 uint32_t di_gid; /* 116: File group. */ 90 91 /* 92 * Originally two 32-bit spare fields, set to 0. Extended by 93 * DragonFly 10-Mar-2019 to support 48-bit time fields. 94 */ 95 uint16_t di_atime_ext; /* 120: 16 msb time bits */ 96 uint16_t di_mtime_ext; /* 122: 16 msb time bits */ 97 uint16_t di_ctime_ext; /* 124: 16 msb time bits */ 98 uint16_t di_spare7E; /* 126: spare field */ 99 }; 100 101 /* 102 * The di_db fields may be overlaid with other information for 103 * file types that do not have associated disk storage. Block 104 * and character devices overlay the first data block with their 105 * cdev_t value. Short symbolic links place their path in the 106 * di_db area. 107 */ 108 #define di_inumber di_u.inumber 109 #define di_ogid di_u.oldids[1] 110 #define di_ouid di_u.oldids[0] 111 #define di_rdev di_db[0] 112 #define di_shortlink di_db 113 #define di_spare di_v.spare /* ext2fs */ 114 #define UFS1_MAXSYMLINKLEN ((UFS_NDADDR + UFS_NIADDR) * sizeof(ufs_daddr_t)) 115 116 /* File permissions. */ 117 #define IEXEC 0000100 /* Executable. */ 118 #define IWRITE 0000200 /* Writeable. */ 119 #define IREAD 0000400 /* Readable. */ 120 #define ISVTX 0001000 /* Sticky bit. */ 121 #define ISGID 0002000 /* Set-gid. */ 122 #define ISUID 0004000 /* Set-uid. */ 123 124 /* File types. */ 125 #define IFMT 0170000 /* Mask of file type. */ 126 #define IFIFO 0010000 /* Named pipe (fifo). */ 127 #define IFCHR 0020000 /* Character device. */ 128 #define IFDIR 0040000 /* Directory file. */ 129 #define IFBLK 0060000 /* Block device. */ 130 #define IFREG 0100000 /* Regular file. */ 131 #define IFLNK 0120000 /* Symbolic link. */ 132 #define IFSOCK 0140000 /* UNIX domain socket. */ 133 #define IFWHT 0160000 /* Whiteout. */ 134 135 #endif /* !_VFS_UFS_DINODE_H_ */ 136