1 /* $NetBSD: ext2fs_dinode.h,v 1.19 2009/03/02 09:54:49 tsutsui 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 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 * 68 * @(#)dinode.h 8.6 (Berkeley) 9/13/94 69 * Modified for ext2fs by Manuel Bouyer. 70 */ 71 72 #ifndef _UFS_EXT2FS_EXT2FS_DINODE_H_ 73 #define _UFS_EXT2FS_EXT2FS_DINODE_H_ 74 75 #include <sys/stat.h> 76 77 /* 78 * The root inode is the root of the file system. Inode 0 can't be used for 79 * normal purposes and bad blocks are normally linked to inode 1, thus 80 * the root inode is 2. 81 * Inode 3 to 10 are reserved in ext2fs. 82 */ 83 #define EXT2_ROOTINO ((ino_t)2) 84 #define EXT2_RESIZEINO ((ino_t)7) 85 #define EXT2_FIRSTINO ((ino_t)11) 86 87 /* 88 * A dinode contains all the meta-data associated with a UFS file. 89 * This structure defines the on-disk format of a dinode. Since 90 * this structure describes an on-disk structure, all its fields 91 * are defined by types with precise widths. 92 */ 93 94 #define NDADDR 12 /* Direct addresses in inode. */ 95 #define NIADDR 3 /* Indirect addresses in inode. */ 96 97 #define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t)) 98 99 struct ext2fs_dinode { 100 u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */ 101 u_int16_t e2di_uid; /* 2: Owner UID */ 102 u_int32_t e2di_size; /* 4: Size (in bytes) */ 103 u_int32_t e2di_atime; /* 8: Acces time */ 104 u_int32_t e2di_ctime; /* 12: Create time */ 105 u_int32_t e2di_mtime; /* 16: Modification time */ 106 u_int32_t e2di_dtime; /* 20: Deletion time */ 107 u_int16_t e2di_gid; /* 24: Owner GID */ 108 u_int16_t e2di_nlink; /* 26: File link count */ 109 u_int32_t e2di_nblock; /* 28: Blocks count */ 110 u_int32_t e2di_flags; /* 32: Status flags (chflags) */ 111 u_int32_t e2di_linux_reserved1; /* 36 */ 112 u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */ 113 u_int32_t e2di_gen; /* 100: generation number */ 114 u_int32_t e2di_facl; /* 104: file ACL (not implemented) */ 115 u_int32_t e2di_dacl; /* 108: dir ACL (not implemented) */ 116 u_int32_t e2di_faddr; /* 112: fragment address */ 117 u_int8_t e2di_nfrag; /* 116: fragment number */ 118 u_int8_t e2di_fsize; /* 117: fragment size */ 119 u_int16_t e2di_linux_reserved2; /* 118 */ 120 u_int16_t e2di_uid_high; /* 120: Owner UID top 16 bits */ 121 u_int16_t e2di_gid_high; /* 122: Owner GID top 16 bits */ 122 u_int32_t e2di_linux_reserved3; /* 124 */ 123 }; 124 125 126 127 #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t)) 128 129 /* File permissions. */ 130 #define EXT2_IEXEC 0000100 /* Executable. */ 131 #define EXT2_IWRITE 0000200 /* Writable. */ 132 #define EXT2_IREAD 0000400 /* Readable. */ 133 #define EXT2_ISVTX 0001000 /* Sticky bit. */ 134 #define EXT2_ISGID 0002000 /* Set-gid. */ 135 #define EXT2_ISUID 0004000 /* Set-uid. */ 136 137 /* File types. */ 138 #define EXT2_IFMT 0170000 /* Mask of file type. */ 139 #define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ 140 #define EXT2_IFCHR 0020000 /* Character device. */ 141 #define EXT2_IFDIR 0040000 /* Directory file. */ 142 #define EXT2_IFBLK 0060000 /* Block device. */ 143 #define EXT2_IFREG 0100000 /* Regular file. */ 144 #define EXT2_IFLNK 0120000 /* Symbolic link. */ 145 #define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ 146 147 /* file flags */ 148 #define EXT2_SECRM 0x00000001 /* Secure deletion */ 149 #define EXT2_UNRM 0x00000002 /* Undelete */ 150 #define EXT2_COMPR 0x00000004 /* Compress file */ 151 #define EXT2_SYNC 0x00000008 /* Synchronous updates */ 152 #define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ 153 #define EXT2_APPEND 0x00000020 /* writes to file may only append */ 154 #define EXT2_NODUMP 0x00000040 /* do not dump file */ 155 156 /* Size of on-disk inode. */ 157 #define EXT2_REV0_DINODE_SIZE sizeof(struct ext2fs_dinode) 158 #define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \ 159 (fs)->e2fs.e2fs_inode_size : \ 160 EXT2_REV0_DINODE_SIZE) 161 162 /* 163 * The e2di_blocks fields may be overlaid with other information for 164 * file types that do not have associated disk storage. Block 165 * and character devices overlay the first data block with their 166 * dev_t value. Short symbolic links place their path in the 167 * di_db area. 168 */ 169 170 #define e2di_rdev e2di_blocks[0] 171 #define e2di_shortlink e2di_blocks 172 173 /* e2fs needs byte swapping on big-endian systems */ 174 #if BYTE_ORDER == LITTLE_ENDIAN 175 # define e2fs_iload(old, new) \ 176 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 177 # define e2fs_isave(old, new) \ 178 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 179 #else 180 void e2fs_i_bswap(struct ext2fs_dinode *, struct ext2fs_dinode *); 181 # define e2fs_iload(old, new) e2fs_i_bswap((old), (new)) 182 # define e2fs_isave(old, new) e2fs_i_bswap((old), (new)) 183 #endif 184 185 #endif /* !_UFS_EXT2FS_EXT2FS_DINODE_H_ */ 186