/* $OpenBSD: ext2fs_dinode.h,v 1.17 2014/07/31 17:37:52 pelikan Exp $ */ /* $NetBSD: ext2fs_dinode.h,v 1.6 2000/01/26 16:21:33 bouyer Exp $ */ /* * Copyright (c) 1997 Manuel Bouyer. * Copyright (c) 1982, 1989, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)dinode.h 8.6 (Berkeley) 9/13/94 * Modified for ext2fs by Manuel Bouyer. */ #include <sys/stat.h> #include <ufs/ufs/dinode.h> /* for ufsino_t */ /* * The root inode is the root of the file system. Inode 0 can't be used for * normal purposes and bad blocks are normally linked to inode 1, thus * the root inode is 2. * Inode 3 to 10 are reserved in ext2fs. */ #define EXT2_ROOTINO ((ufsino_t)2) #define EXT2_RESIZEINO ((ufsino_t)7) #define EXT2_FIRSTINO ((ufsino_t)11) /* * A dinode contains all the meta-data associated with a UFS file. * This structure defines the on-disk format of a dinode. Since * this structure describes an on-disk structure, all its fields * are defined by types with precise widths. */ #define NDADDR 12 /* Direct addresses in inode. */ #define NIADDR 3 /* Indirect addresses in inode. */ #define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t)) struct ext2fs_dinode { u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */ u_int16_t e2di_uid_low; /* 2: owner UID, bits 15:0 */ u_int32_t e2di_size; /* 4: file size (bytes) bits 31:0 */ u_int32_t e2di_atime; /* 8: Access time */ u_int32_t e2di_ctime; /* 12: Change time */ u_int32_t e2di_mtime; /* 16: Modification time */ u_int32_t e2di_dtime; /* 20: Deletion time */ u_int16_t e2di_gid_low; /* 24: Owner GID, lowest bits */ u_int16_t e2di_nlink; /* 26: File link count */ u_int32_t e2di_nblock; /* 28: blocks count */ u_int32_t e2di_flags; /* 32: status flags (chflags) */ u_int32_t e2di_version_lo; /* 36: inode version, bits 31:0 */ u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */ u_int32_t e2di_gen; /* 100: generation number */ u_int32_t e2di_facl; /* 104: file ACL, bits 31:0 */ u_int32_t e2di_size_hi; /* 108: file size (bytes), bits 63:32 */ u_int32_t e2di_faddr; /* 112: fragment address (obsolete) */ u_int16_t e2di_nblock_hi; /* 116: blocks count, bits 47:32 */ u_int16_t e2di_facl_hi; /* 118: file ACL, bits 47:32 */ u_int16_t e2di_uid_high; /* 120: owner UID, bits 31:16 */ u_int16_t e2di_gid_high; /* 122: owner GID, bits 31:16 */ u_int16_t e2di_chksum_lo; /* 124: inode checksum, bits 15:0 */ u_int16_t e2di__reserved; /* 126: unused */ u_int16_t e2di_isize; /* 128: size of this inode */ u_int16_t e2di_chksum_hi; /* 130: inode checksum, bits 31:16 */ u_int32_t e2di_x_ctime; /* 132: extra Change time */ u_int32_t e2di_x_mtime; /* 136: extra Modification time */ u_int32_t e2di_x_atime; /* 140: extra Access time */ u_int32_t e2di_crtime; /* 144: Creation (birth) time */ u_int32_t e2di_x_crtime; /* 148: extra Creation (birth) time */ u_int32_t e2di_version_hi; /* 152: inode version, bits 63:31 */ }; #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t)) /* File permissions. */ #define EXT2_IEXEC 0000100 /* Executable. */ #define EXT2_IWRITE 0000200 /* Writeable. */ #define EXT2_IREAD 0000400 /* Readable. */ #define EXT2_ISVTX 0001000 /* Sticky bit. */ #define EXT2_ISGID 0002000 /* Set-gid. */ #define EXT2_ISUID 0004000 /* Set-uid. */ /* File types. */ #define EXT2_IFMT 0170000 /* Mask of file type. */ #define EXT2_IFIFO 0010000 /* Named pipe (fifo). */ #define EXT2_IFCHR 0020000 /* Character device. */ #define EXT2_IFDIR 0040000 /* Directory file. */ #define EXT2_IFBLK 0060000 /* Block device. */ #define EXT2_IFREG 0100000 /* Regular file. */ #define EXT2_IFLNK 0120000 /* Symbolic link. */ #define EXT2_IFSOCK 0140000 /* UNIX domain socket. */ /* file flags */ #define EXT2_SECRM 0x00000001 /* Secure deletion */ #define EXT2_UNRM 0x00000002 /* Undelete */ #define EXT2_COMPR 0x00000004 /* Compress file */ #define EXT2_SYNC 0x00000008 /* Synchronous updates */ #define EXT2_IMMUTABLE 0x00000010 /* Immutable file */ #define EXT2_APPEND 0x00000020 /* writes to file may only append */ #define EXT2_NODUMP 0x00000040 /* do not dump file */ #define EXT2_NOATIME 0x00000080 /* do not update access time */ #define EXT4_INDEX 0x00001000 /* hash-indexed directory */ #define EXT4_JOURNAL_DATA 0x00004000 /* file data should be journaled */ #define EXT4_DIRSYNC 0x00010000 /* all dirent updates done synchronously */ #define EXT4_TOPDIR 0x00020000 /* top of directory hierarchies */ #define EXT4_HUGE_FILE 0x00040000 /* nblocks unit is fsb, not db */ #define EXT4_EXTENTS 0x00080000 /* inode uses extents */ #define EXT4_EOFBLOCKS 0x00400000 /* blocks allocated beyond EOF */ /* Size of on-disk inode. */ #define EXT2_REV0_DINODE_SIZE 128 #define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \ (fs)->e2fs.e2fs_inode_size : \ EXT2_REV0_DINODE_SIZE) /* * The e2di_blocks fields may be overlaid with other information for * file types that do not have associated disk storage. Block * and character devices overlay the first data block with their * dev_t value. Short symbolic links place their path in the * di_db area. */ #define e2di_rdev e2di_blocks[0] #define e2di_shortlink e2di_blocks /* e2fs needs byte swapping on big-endian systems */ #if BYTE_ORDER == LITTLE_ENDIAN # define e2fs_iload(fs, old, new) \ memcpy((new),(old), MIN(EXT2_DINODE_SIZE(fs), sizeof(*new))) # define e2fs_isave(fs, old, new) \ memcpy((new),(old), MIN(EXT2_DINODE_SIZE(fs), sizeof(*new))) #else struct m_ext2fs; void e2fs_i_bswap(struct m_ext2fs *, struct ext2fs_dinode *, struct ext2fs_dinode *); # define e2fs_iload(fs, old, new) e2fs_i_bswap((fs), (old), (new)) # define e2fs_isave(fs, old, new) e2fs_i_bswap((fs), (old), (new)) #endif
