1 /* $OpenBSD: ext2fs_dinode.h,v 1.17 2014/07/31 17:37:52 pelikan Exp $ */ 2 /* $NetBSD: ext2fs_dinode.h,v 1.6 2000/01/26 16:21:33 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. 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 8.6 (Berkeley) 9/13/94 39 * Modified for ext2fs by Manuel Bouyer. 40 */ 41 42 #include <sys/stat.h> 43 #include <ufs/ufs/dinode.h> /* for ufsino_t */ 44 45 /* 46 * The root inode is the root of the file system. Inode 0 can't be used for 47 * normal purposes and bad blocks are normally linked to inode 1, thus 48 * the root inode is 2. 49 * Inode 3 to 10 are reserved in ext2fs. 50 */ 51 #define EXT2_ROOTINO ((ufsino_t)2) 52 #define EXT2_RESIZEINO ((ufsino_t)7) 53 #define EXT2_FIRSTINO ((ufsino_t)11) 54 55 /* 56 * A dinode contains all the meta-data associated with a UFS file. 57 * This structure defines the on-disk format of a dinode. Since 58 * this structure describes an on-disk structure, all its fields 59 * are defined by types with precise widths. 60 */ 61 62 #define NDADDR 12 /* Direct addresses in inode. */ 63 #define NIADDR 3 /* Indirect addresses in inode. */ 64 65 #define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t)) 66 67 struct ext2fs_dinode { 68 u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */ 69 u_int16_t e2di_uid_low; /* 2: owner UID, bits 15:0 */ 70 u_int32_t e2di_size; /* 4: file size (bytes) bits 31:0 */ 71 u_int32_t e2di_atime; /* 8: Access time */ 72 u_int32_t e2di_ctime; /* 12: Change time */ 73 u_int32_t e2di_mtime; /* 16: Modification time */ 74 u_int32_t e2di_dtime; /* 20: Deletion time */ 75 u_int16_t e2di_gid_low; /* 24: Owner GID, lowest bits */ 76 u_int16_t e2di_nlink; /* 26: File link count */ 77 u_int32_t e2di_nblock; /* 28: blocks count */ 78 u_int32_t e2di_flags; /* 32: status flags (chflags) */ 79 u_int32_t e2di_version_lo; /* 36: inode version, bits 31:0 */ 80 u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */ 81 u_int32_t e2di_gen; /* 100: generation number */ 82 u_int32_t e2di_facl; /* 104: file ACL, bits 31:0 */ 83 u_int32_t e2di_size_hi; /* 108: file size (bytes), bits 63:32 */ 84 u_int32_t e2di_faddr; /* 112: fragment address (obsolete) */ 85 u_int16_t e2di_nblock_hi; /* 116: blocks count, bits 47:32 */ 86 u_int16_t e2di_facl_hi; /* 118: file ACL, bits 47:32 */ 87 u_int16_t e2di_uid_high; /* 120: owner UID, bits 31:16 */ 88 u_int16_t e2di_gid_high; /* 122: owner GID, bits 31:16 */ 89 u_int16_t e2di_chksum_lo; /* 124: inode checksum, bits 15:0 */ 90 u_int16_t e2di__reserved; /* 126: unused */ 91 u_int16_t e2di_isize; /* 128: size of this inode */ 92 u_int16_t e2di_chksum_hi; /* 130: inode checksum, bits 31:16 */ 93 u_int32_t e2di_x_ctime; /* 132: extra Change time */ 94 u_int32_t e2di_x_mtime; /* 136: extra Modification time */ 95 u_int32_t e2di_x_atime; /* 140: extra Access time */ 96 u_int32_t e2di_crtime; /* 144: Creation (birth) time */ 97 u_int32_t e2di_x_crtime; /* 148: extra Creation (birth) time */ 98 u_int32_t e2di_version_hi; /* 152: inode version, bits 63:31 */ 99 }; 100 101 #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t)) 102 103 /* File permissions. */ 104 #define EXT2_IEXEC 0000100 /* Executable. */ 105 #define EXT2_IWRITE 0000200 /* Writeable. */ 106 #define EXT2_IREAD 0000400 /* Readable. */ 107 #define EXT2_ISVTX 0001000 /* Sticky bit. */ 108 #define EXT2_ISGID 0002000 /* Set-gid. */ 109 #define EXT2_ISUID 0004000 /* Set-uid. */ 110 111 /* File types. */ 112 #define EXT2_IFMT 0170000 /* Mask of file type. */ 113 #define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ 114 #define EXT2_IFCHR 0020000 /* Character device. */ 115 #define EXT2_IFDIR 0040000 /* Directory file. */ 116 #define EXT2_IFBLK 0060000 /* Block device. */ 117 #define EXT2_IFREG 0100000 /* Regular file. */ 118 #define EXT2_IFLNK 0120000 /* Symbolic link. */ 119 #define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ 120 121 /* file flags */ 122 #define EXT2_SECRM 0x00000001 /* Secure deletion */ 123 #define EXT2_UNRM 0x00000002 /* Undelete */ 124 #define EXT2_COMPR 0x00000004 /* Compress file */ 125 #define EXT2_SYNC 0x00000008 /* Synchronous updates */ 126 #define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ 127 #define EXT2_APPEND 0x00000020 /* writes to file may only append */ 128 #define EXT2_NODUMP 0x00000040 /* do not dump file */ 129 #define EXT2_NOATIME 0x00000080 /* do not update access time */ 130 #define EXT4_INDEX 0x00001000 /* hash-indexed directory */ 131 #define EXT4_JOURNAL_DATA 0x00004000 /* file data should be journaled */ 132 #define EXT4_DIRSYNC 0x00010000 /* all dirent updates done synchronously */ 133 #define EXT4_TOPDIR 0x00020000 /* top of directory hierarchies */ 134 #define EXT4_HUGE_FILE 0x00040000 /* nblocks unit is fsb, not db */ 135 #define EXT4_EXTENTS 0x00080000 /* inode uses extents */ 136 #define EXT4_EOFBLOCKS 0x00400000 /* blocks allocated beyond EOF */ 137 138 /* Size of on-disk inode. */ 139 #define EXT2_REV0_DINODE_SIZE 128 140 #define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \ 141 (fs)->e2fs.e2fs_inode_size : \ 142 EXT2_REV0_DINODE_SIZE) 143 144 /* 145 * The e2di_blocks fields may be overlaid with other information for 146 * file types that do not have associated disk storage. Block 147 * and character devices overlay the first data block with their 148 * dev_t value. Short symbolic links place their path in the 149 * di_db area. 150 */ 151 152 #define e2di_rdev e2di_blocks[0] 153 #define e2di_shortlink e2di_blocks 154 155 /* e2fs needs byte swapping on big-endian systems */ 156 #if BYTE_ORDER == LITTLE_ENDIAN 157 # define e2fs_iload(fs, old, new) \ 158 memcpy((new),(old), MIN(EXT2_DINODE_SIZE(fs), sizeof(*new))) 159 # define e2fs_isave(fs, old, new) \ 160 memcpy((new),(old), MIN(EXT2_DINODE_SIZE(fs), sizeof(*new))) 161 #else 162 struct m_ext2fs; 163 void e2fs_i_bswap(struct m_ext2fs *, struct ext2fs_dinode *, struct ext2fs_dinode *); 164 # define e2fs_iload(fs, old, new) e2fs_i_bswap((fs), (old), (new)) 165 # define e2fs_isave(fs, old, new) e2fs_i_bswap((fs), (old), (new)) 166 #endif 167