| | 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. All advertising materials mentioning features or use of this software |
| | 19 | * must display the following acknowledgement: |
| | 20 | * This product includes software developed by the University of |
| | 21 | * California, Berkeley and its contributors. |
| | 22 | * 4. Neither the name of the University nor the names of its contributors |
| | 23 | * may be used to endorse or promote products derived from this software |
| | 24 | * without specific prior written permission. |
| | 25 | * |
| | 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 36 | * SUCH DAMAGE. |
| | 37 | * |
| | 38 | * @(#)dinode.h 8.3 (Berkeley) 1/21/94 |
| | 39 | * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.7 1999/08/28 00:52:27 peter Exp $ |
| | 40 | * $DragonFly: src/sys/vfs/ufs/dinode.h,v 1.2 2003/06/17 04:28:59 dillon Exp $ |
| | 41 | */ |
| | 42 | |
| | 43 | #ifndef _UFS_UFS_DINODE_H_ |
| | 44 | #define _UFS_UFS_DINODE_H_ |
| | 45 | |
| | 46 | /* |
| | 47 | * The root inode is the root of the file system. Inode 0 can't be used for |
| | 48 | * normal purposes and historically bad blocks were linked to inode 1, thus |
| | 49 | * the root inode is 2. (Inode 1 is no longer used for this purpose, however |
| | 50 | * numerous dump tapes make this assumption, so we are stuck with it). |
| | 51 | */ |
| | 52 | #define ROOTINO ((ino_t)2) |
| | 53 | |
| | 54 | /* |
| | 55 | * The Whiteout inode# is a dummy non-zero inode number which will |
| | 56 | * never be allocated to a real file. It is used as a place holder |
| | 57 | * in the directory entry which has been tagged as a DT_W entry. |
| | 58 | * See the comments about ROOTINO above. |
| | 59 | */ |
| | 60 | #define WINO ((ino_t)1) |
| | 61 | |
| | 62 | /* |
| | 63 | * A dinode contains all the meta-data associated with a UFS file. |
| | 64 | * This structure defines the on-disk format of a dinode. Since |
| | 65 | * this structure describes an on-disk structure, all its fields |
| | 66 | * are defined by types with precise widths. |
| | 67 | */ |
| | 68 | |
| | 69 | /* typedef int32_t ufs_daddr_t; */ |
| | 70 | #define NDADDR 12 /* Direct addresses in inode. */ |
| | 71 | #define NIADDR 3 /* Indirect addresses in inode. */ |
| | 72 | |
| | 73 | struct dinode { |
| | 74 | u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ |
| | 75 | int16_t di_nlink; /* 2: File link count. */ |
| | 76 | union { |
| | 77 | u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ |
| | 78 | int32_t inumber; /* 4: Lfs: inode number. */ |
| | 79 | } di_u; |
| | 80 | u_int64_t di_size; /* 8: File byte count. */ |
| | 81 | int32_t di_atime; /* 16: Last access time. */ |
| | 82 | int32_t di_atimensec; /* 20: Last access time. */ |
| | 83 | int32_t di_mtime; /* 24: Last modified time. */ |
| | 84 | int32_t di_mtimensec; /* 28: Last modified time. */ |
| | 85 | int32_t di_ctime; /* 32: Last inode change time. */ |
| | 86 | int32_t di_ctimensec; /* 36: Last inode change time. */ |
| | 87 | ufs_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */ |
| | 88 | ufs_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ |
| | 89 | u_int32_t di_flags; /* 100: Status flags (chflags). */ |
| | 90 | int32_t di_blocks; /* 104: Blocks actually held. */ |
| | 91 | int32_t di_gen; /* 108: Generation number. */ |
| | 92 | u_int32_t di_uid; /* 112: File owner. */ |
| | 93 | u_int32_t di_gid; /* 116: File group. */ |
| | 94 | int32_t di_spare[2]; /* 120: Reserved; currently unused */ |
| | 95 | }; |
| | 96 | |
| | 97 | /* |
| | 98 | * The di_db fields may be overlaid with other information for |
| | 99 | * file types that do not have associated disk storage. Block |
| | 100 | * and character devices overlay the first data block with their |
| | 101 | * dev_t value. Short symbolic links place their path in the |
| | 102 | * di_db area. |
| | 103 | */ |
| | 104 | #define di_inumber di_u.inumber |
| | 105 | #define di_ogid di_u.oldids[1] |
| | 106 | #define di_ouid di_u.oldids[0] |
| | 107 | #define di_rdev di_db[0] |
| | 108 | #define di_shortlink di_db |
| | 109 | #define MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(ufs_daddr_t)) |
| | 110 | |
| | 111 | /* File permissions. */ |
| | 112 | #define IEXEC 0000100 /* Executable. */ |
| | 113 | #define IWRITE 0000200 /* Writeable. */ |
| | 114 | #define IREAD 0000400 /* Readable. */ |
| | 115 | #define ISVTX 0001000 /* Sticky bit. */ |
| | 116 | #define ISGID 0002000 /* Set-gid. */ |
| | 117 | #define ISUID 0004000 /* Set-uid. */ |
| | 118 | |
| | 119 | /* File types. */ |
| | 120 | #define IFMT 0170000 /* Mask of file type. */ |
| | 121 | #define IFIFO 0010000 /* Named pipe (fifo). */ |
| | 122 | #define IFCHR 0020000 /* Character device. */ |
| | 123 | #define IFDIR 0040000 /* Directory file. */ |
| | 124 | #define IFBLK 0060000 /* Block device. */ |
| | 125 | #define IFREG 0100000 /* Regular file. */ |
| | 126 | #define IFLNK 0120000 /* Symbolic link. */ |
| | 127 | #define IFSOCK 0140000 /* UNIX domain socket. */ |
| | 128 | #define IFWHT 0160000 /* Whiteout. */ |
| | 129 | |
| | 130 | #endif |
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