1 /* $OpenBSD: ext2fs_dinode.h,v 1.4 2000/04/26 23:24:40 jasoni Exp $ */ 2 /* $NetBSD: ext2fs_dinode.h,v 1.1 1997/06/11 09:33:48 bouyer Exp $ */ 3 4 /* 5 * Copyright (c) 1997 Manuel Bouyer. 6 * Copyright (c) 1982, 1989, 1993 7 * The Regents of the University of California. All rights reserved. 8 * (c) UNIX System Laboratories, Inc. 9 * All or some portions of this file are derived from material licensed 10 * to the University of California by American Telephone and Telegraph 11 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 12 * the permission of UNIX System Laboratories, Inc. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)dinode.h 8.6 (Berkeley) 9/13/94 43 * Modified for ext2fs by Manuel Bouyer. 44 */ 45 46 #include <sys/stat.h> 47 48 /* 49 * The root inode is the root of the file system. Inode 0 can't be used for 50 * normal purposes and bad blocks are normally linked to inode 1, thus 51 * the root inode is 2. 52 * Inode 3 to 10 are reserved in ext2fs. 53 */ 54 #define EXT2_ROOTINO ((ino_t)2) 55 #define EXT2_FIRSTINO ((ino_t)11) 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 64 #define NDADDR 12 /* Direct addresses in inode. */ 65 #define NIADDR 3 /* Indirect addresses in inode. */ 66 67 #define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t)) 68 69 struct ext2fs_dinode { 70 u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */ 71 u_int16_t e2di_uid; /* 2: Owner UID */ 72 u_int32_t e2di_size; /* 4: Size (in bytes) */ 73 u_int32_t e2di_atime; /* 8: Acces time */ 74 u_int32_t e2di_ctime; /* 12: Create time */ 75 u_int32_t e2di_mtime; /* 16: Modification time */ 76 u_int32_t e2di_dtime; /* 20: Deletion time */ 77 u_int16_t e2di_gid; /* 24: Owner GID */ 78 u_int16_t e2di_nlink; /* 26: File link count */ 79 u_int32_t e2di_nblock;/* 28: Blocks count */ 80 u_int32_t e2di_flags; /* 32: Status flags (chflags) */ 81 u_int32_t e2di_linux_reserved1; /* 36 */ 82 u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */ 83 u_int32_t e2di_gen; /* 100: generation number (file version) */ 84 u_int32_t e2di_facl; /* 104: file ACL (not implemented) */ 85 u_int32_t e2di_dacl; /* 108: dir ACL (not implemented) */ 86 u_int32_t e2di_faddr; /* 112: fragment address */ 87 u_int8_t e2di_nfrag; /* 116: fragment number */ 88 u_int8_t e2di_fsize; /* 117: fragment size */ 89 u_int16_t e2di_linux_reserved2; /* 118 */ 90 u_int32_t e2di_linux_reserved3[2]; /* 120 */ 91 }; 92 93 94 95 #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t)) 96 97 /* File permissions. */ 98 #define EXT2_IEXEC 0000100 /* Executable. */ 99 #define EXT2_IWRITE 0000200 /* Writeable. */ 100 #define EXT2_IREAD 0000400 /* Readable. */ 101 #define EXT2_ISVTX 0001000 /* Sticky bit. */ 102 #define EXT2_ISGID 0002000 /* Set-gid. */ 103 #define EXT2_ISUID 0004000 /* Set-uid. */ 104 105 /* File types. */ 106 #define EXT2_IFMT 0170000 /* Mask of file type. */ 107 #define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ 108 #define EXT2_IFCHR 0020000 /* Character device. */ 109 #define EXT2_IFDIR 0040000 /* Directory file. */ 110 #define EXT2_IFBLK 0060000 /* Block device. */ 111 #define EXT2_IFREG 0100000 /* Regular file. */ 112 #define EXT2_IFLNK 0120000 /* Symbolic link. */ 113 #define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ 114 115 /* file flags */ 116 #define EXT2_SECRM 0x00000001 /* Secure deletion */ 117 #define EXT2_UNRM 0x00000002 /* Undelete */ 118 #define EXT2_COMPR 0x00000004 /* Compress file */ 119 #define EXT2_SYNC 0x00000008 /* Synchronous updates */ 120 #define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ 121 #define EXT2_APPEND 0x00000020 /* writes to file may only append */ 122 #define EXT2_NODUMP 0x00000040 /* do not dump file */ 123 124 /* Size of on-disk inode. */ 125 #define EXT2_DINODE_SIZE (sizeof(struct ext2fs_dinode)) /* 128 */ 126 127 /* 128 * The e2di_blocks fields may be overlaid with other information for 129 * file types that do not have associated disk storage. Block 130 * and character devices overlay the first data block with their 131 * dev_t value. Short symbolic links place their path in the 132 * di_db area. 133 */ 134 135 #define e2di_rdev e2di_blocks[0] 136 #define e2di_shortlink e2di_blocks 137 138 /* 139 * e2fs needs byte swapping on big-endian systems. Use macros here to 140 * aide in big-endian support. 141 */ 142 #define e2fs_iload(old, new) bcopy((old),(new),sizeof(struct ext2fs_dinode)) 143 #define e2fs_isave(old, new) bcopy((old),(new),sizeof(struct ext2fs_dinode)) 144