1/* $NetBSD: ext2fs_dinode.h,v 1.21 2009/10/19 18:41:17 bouyer Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)dinode.h 8.6 (Berkeley) 9/13/94 37 * Modified for ext2fs by Manuel Bouyer. 38 */ 39 40/* 41 * Copyright (c) 1997 Manuel Bouyer. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * @(#)dinode.h 8.6 (Berkeley) 9/13/94 64 * Modified for ext2fs by Manuel Bouyer. 65 */ 66 67#ifndef _UFS_EXT2FS_EXT2FS_DINODE_H_ 68#define _UFS_EXT2FS_EXT2FS_DINODE_H_ 69 70#include <sys/stat.h> 71 72/* 73 * The root inode is the root of the file system. Inode 0 can't be used for 74 * normal purposes and bad blocks are normally linked to inode 1, thus 75 * the root inode is 2. 76 * Inode 3 to 10 are reserved in ext2fs. 77 */ 78#define EXT2_BADBLKINO ((ino_t)1) 79#define EXT2_ROOTINO ((ino_t)2) 80#define EXT2_ACLIDXINO ((ino_t)3) 81#define EXT2_ACLDATAINO ((ino_t)4) 82#define EXT2_BOOTLOADERINO ((ino_t)5) 83#define EXT2_UNDELDIRINO ((ino_t)6) 84#define EXT2_RESIZEINO ((ino_t)7) 85#define EXT2_JOURNALINO ((ino_t)8) 86#define EXT2_FIRSTINO ((ino_t)11) 87 88/* 89 * A dinode contains all the meta-data associated with a UFS file. 90 * This structure defines the on-disk format of a dinode. Since 91 * this structure describes an on-disk structure, all its fields 92 * are defined by types with precise widths. 93 */ 94 95#define NDADDR 12 /* Direct addresses in inode. */ 96#define NIADDR 3 /* Indirect addresses in inode. */ 97 98#define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (uint32_t)) 99 100struct ext2fs_dinode { 101 uint16_t e2di_mode; /* 0: IFMT, permissions; see below. */ 102 uint16_t e2di_uid; /* 2: Owner UID */ 103 uint32_t e2di_size; /* 4: Size (in bytes) */ 104 uint32_t e2di_atime; /* 8: Acces time */ 105 uint32_t e2di_ctime; /* 12: Create time */ 106 uint32_t e2di_mtime; /* 16: Modification time */ 107 uint32_t e2di_dtime; /* 20: Deletion time */ 108 uint16_t e2di_gid; /* 24: Owner GID */ 109 uint16_t e2di_nlink; /* 26: File link count */ 110 uint32_t e2di_nblock; /* 28: Blocks count */ 111 uint32_t e2di_flags; /* 32: Status flags (chflags) */ 112 uint32_t e2di_linux_reserved1; /* 36 */ 113 uint32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */ 114 uint32_t e2di_gen; /* 100: generation number */ 115 uint32_t e2di_facl; /* 104: file ACL (not implemented) */ 116 uint32_t e2di_dacl; /* 108: dir ACL (not implemented) */ 117 uint32_t e2di_faddr; /* 112: fragment address */ 118 uint8_t e2di_nfrag; /* 116: fragment number */ 119 uint8_t e2di_fsize; /* 117: fragment size */ 120 uint16_t e2di_linux_reserved2; /* 118 */ 121 uint16_t e2di_uid_high; /* 120: Owner UID top 16 bits */ 122 uint16_t e2di_gid_high; /* 122: Owner GID top 16 bits */ 123 uint32_t e2di_linux_reserved3; /* 124 */ 124}; 125 126 127 128#define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(uint32_t)) 129 130/* File permissions. */ 131#define EXT2_IEXEC 0000100 /* Executable. */ 132#define EXT2_IWRITE 0000200 /* Writable. */ 133#define EXT2_IREAD 0000400 /* Readable. */ 134#define EXT2_ISVTX 0001000 /* Sticky bit. */ 135#define EXT2_ISGID 0002000 /* Set-gid. */ 136#define EXT2_ISUID 0004000 /* Set-uid. */ 137 138/* File types. */ 139#define EXT2_IFMT 0170000 /* Mask of file type. */ 140#define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ 141#define EXT2_IFCHR 0020000 /* Character device. */ 142#define EXT2_IFDIR 0040000 /* Directory file. */ 143#define EXT2_IFBLK 0060000 /* Block device. */ 144#define EXT2_IFREG 0100000 /* Regular file. */ 145#define EXT2_IFLNK 0120000 /* Symbolic link. */ 146#define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ 147 148/* file flags */ 149#define EXT2_SECRM 0x00000001 /* Secure deletion */ 150#define EXT2_UNRM 0x00000002 /* Undelete */ 151#define EXT2_COMPR 0x00000004 /* Compress file */ 152#define EXT2_SYNC 0x00000008 /* Synchronous updates */ 153#define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ 154#define EXT2_APPEND 0x00000020 /* writes to file may only append */ 155#define EXT2_NODUMP 0x00000040 /* do not dump file */ 156 157/* Size of on-disk inode. */ 158#define EXT2_REV0_DINODE_SIZE sizeof(struct ext2fs_dinode) 159#define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \ 160 (fs)->e2fs.e2fs_inode_size : \ 161 EXT2_REV0_DINODE_SIZE) 162 163/* 164 * The e2di_blocks fields may be overlaid with other information for 165 * file types that do not have associated disk storage. Block 166 * and character devices overlay the first data block with their 167 * dev_t value. Short symbolic links place their path in the 168 * di_db area. 169 */ 170 171#define e2di_rdev e2di_blocks[0] 172#define e2di_shortlink e2di_blocks 173 174/* e2fs needs byte swapping on big-endian systems */ 175#if BYTE_ORDER == LITTLE_ENDIAN 176# define e2fs_iload(old, new) \ 177 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 178# define e2fs_isave(old, new) \ 179 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 180#else 181void e2fs_i_bswap(struct ext2fs_dinode *, struct ext2fs_dinode *); 182# define e2fs_iload(old, new) e2fs_i_bswap((old), (new)) 183# define e2fs_isave(old, new) e2fs_i_bswap((old), (new)) 184#endif 185 186#endif /* !_UFS_EXT2FS_EXT2FS_DINODE_H_ */ 187