1 /* $NetBSD: ext2fs_dinode.h,v 1.26 2013/01/22 09:39:15 dholland 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 /* 96 * XXX these are the same values as UFS_NDADDR/UFS_NIADDR and it is 97 * far from clear that there isn't code that relies on them being the 98 * same. 99 */ 100 #define EXT2FS_NDADDR 12 /* Direct addresses in inode. */ 101 #define EXT2FS_NIADDR 3 /* Indirect addresses in inode. */ 102 103 #define EXT2_MAXSYMLINKLEN ((EXT2FS_NDADDR+EXT2FS_NIADDR) * sizeof (uint32_t)) 104 105 struct ext2fs_dinode { 106 uint16_t e2di_mode; /* 0: IFMT, permissions; see below. */ 107 uint16_t e2di_uid; /* 2: Owner UID */ 108 uint32_t e2di_size; /* 4: Size (in bytes) */ 109 uint32_t e2di_atime; /* 8: Access time */ 110 uint32_t e2di_ctime; /* 12: Create time */ 111 uint32_t e2di_mtime; /* 16: Modification time */ 112 uint32_t e2di_dtime; /* 20: Deletion time */ 113 uint16_t e2di_gid; /* 24: Owner GID */ 114 uint16_t e2di_nlink; /* 26: File link count */ 115 uint32_t e2di_nblock; /* 28: Blocks count */ 116 uint32_t e2di_flags; /* 32: Status flags (chflags) */ 117 uint32_t e2di_version; /* 36: was reserved1 */ 118 uint32_t e2di_blocks[EXT2FS_NDADDR+EXT2FS_NIADDR]; 119 /* 40: disk blocks */ 120 uint32_t e2di_gen; /* 100: generation number */ 121 uint32_t e2di_facl; /* 104: file ACL (not implemented) */ 122 uint32_t e2di_dacl; /* 108: dir ACL (not implemented) */ 123 uint32_t e2di_faddr; /* 112: fragment address */ 124 uint16_t e2di_nblock_high; /* 116: Blocks count bits 47:32 */ 125 uint16_t e2di_facl_high; /* 118: file ACL bits 47:32 */ 126 uint16_t e2di_uid_high; /* 120: Owner UID top 16 bits */ 127 uint16_t e2di_gid_high; /* 122: Owner GID top 16 bits */ 128 uint32_t e2di_linux_reserved3; /* 124 */ 129 }; 130 131 132 /* XXX how does this differ from EXT2_MAXSYMLINKLEN above? */ 133 #define E2MAXSYMLINKLEN ((EXT2FS_NDADDR + EXT2FS_NIADDR) * sizeof(uint32_t)) 134 135 /* File permissions. */ 136 #define EXT2_IEXEC 0000100 /* Executable. */ 137 #define EXT2_IWRITE 0000200 /* Writable. */ 138 #define EXT2_IREAD 0000400 /* Readable. */ 139 #define EXT2_ISVTX 0001000 /* Sticky bit. */ 140 #define EXT2_ISGID 0002000 /* Set-gid. */ 141 #define EXT2_ISUID 0004000 /* Set-uid. */ 142 143 /* File types. */ 144 #define EXT2_IFMT 0170000 /* Mask of file type. */ 145 #define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ 146 #define EXT2_IFCHR 0020000 /* Character device. */ 147 #define EXT2_IFDIR 0040000 /* Directory file. */ 148 #define EXT2_IFBLK 0060000 /* Block device. */ 149 #define EXT2_IFREG 0100000 /* Regular file. */ 150 #define EXT2_IFLNK 0120000 /* Symbolic link. */ 151 #define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ 152 153 /* file flags */ 154 #define EXT2_SECRM 0x00000001 /* Secure deletion */ 155 #define EXT2_UNRM 0x00000002 /* Undelete */ 156 #define EXT2_COMPR 0x00000004 /* Compress file */ 157 #define EXT2_SYNC 0x00000008 /* Synchronous updates */ 158 #define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ 159 #define EXT2_APPEND 0x00000020 /* writes to file may only append */ 160 #define EXT2_NODUMP 0x00000040 /* do not dump file */ 161 #define EXT2_NOATIME 0x00000080 /* do not update atime */ 162 #define EXT2_INDEX 0x00001000 /* hash-indexed directory */ 163 #define EXT2_IMAGIC 0x00002000 /* AFS directory */ 164 #define EXT2_JOURNAL_DATA 0x00004000 /* file data should be journaled */ 165 #define EXT2_NOTAIL 0x00008000 /* file tail should not be merged */ 166 #define EXT2_DIRSYNC 0x00010000 /* dirsync behaviour */ 167 #define EXT2_TOPDIR 0x00020000 /* Top of directory hierarchies*/ 168 #define EXT2_HUGE_FILE 0x00040000 /* Set to each huge file */ 169 #define EXT2_EXTENTS 0x00080000 /* Inode uses extents */ 170 #define EXT2_EOFBLOCKS 0x00400000 /* Blocks allocated beyond EOF */ 171 172 /* Size of on-disk inode. */ 173 #define EXT2_REV0_DINODE_SIZE sizeof(struct ext2fs_dinode) 174 #define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \ 175 (fs)->e2fs.e2fs_inode_size : \ 176 EXT2_REV0_DINODE_SIZE) 177 178 /* 179 * The e2di_blocks fields may be overlaid with other information for 180 * file types that do not have associated disk storage. Block 181 * and character devices overlay the first data block with their 182 * dev_t value. Short symbolic links place their path in the 183 * di_db area. 184 */ 185 186 #define e2di_rdev e2di_blocks[0] 187 #define e2di_shortlink e2di_blocks 188 189 /* e2fs needs byte swapping on big-endian systems */ 190 #if BYTE_ORDER == LITTLE_ENDIAN 191 # define e2fs_iload(old, new) \ 192 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 193 # define e2fs_isave(old, new) \ 194 memcpy((new),(old),sizeof(struct ext2fs_dinode)) 195 #else 196 void e2fs_i_bswap(struct ext2fs_dinode *, struct ext2fs_dinode *); 197 # define e2fs_iload(old, new) e2fs_i_bswap((old), (new)) 198 # define e2fs_isave(old, new) e2fs_i_bswap((old), (new)) 199 #endif 200 201 #endif /* !_UFS_EXT2FS_EXT2FS_DINODE_H_ */ 202