/* $OpenBSD: dinode.h,v 1.19 2020/05/28 15:48:29 otto Exp $ */ /* $NetBSD: dinode.h,v 1.7 1995/06/15 23:22:48 cgd Exp $ */ /* * 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 8.9 (Berkeley) 3/29/95 */ #ifndef _UFS_DINODE_H_ #define _UFS_DINODE_H_ /* * UFS directories use 32bit inode numbers internally, regardless * of what the system on top of it uses. */ typedef u_int32_t ufsino_t; /* * The root inode is the root of the file system. Inode 0 can't be used for * normal purposes and historically bad blocks were linked to inode 1, thus * the root inode is 2. (Inode 1 is no longer used for this purpose, however * numerous dump tapes make this assumption, so we are stuck with it). */ #define ROOTINO ((ufsino_t)2) /* * 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 NXADDR 2 /* External addresses in inode */ #define NDADDR 12 /* Direct addresses in inode. */ #define NIADDR 3 /* Indirect addresses in inode. */ struct ufs1_dinode { u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ int16_t di_nlink; /* 2: File link count. */ union { u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */ u_int32_t inumber; /* 4: Lfs: inode number. */ } di_u; u_int64_t di_size; /* 8: File byte count. */ int32_t di_atime; /* 16: Last access time. */ int32_t di_atimensec; /* 20: Last access time. */ int32_t di_mtime; /* 24: Last modified time. */ int32_t di_mtimensec; /* 28: Last modified time. */ int32_t di_ctime; /* 32: Last inode change time. */ int32_t di_ctimensec; /* 36: Last inode change time. */ int32_t di_db[NDADDR]; /* 40: Direct disk blocks. */ int32_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */ u_int32_t di_flags; /* 100: Status flags (chflags). */ int32_t di_blocks; /* 104: Blocks actually held. */ u_int32_t di_gen; /* 108: Generation number. */ u_int32_t di_uid; /* 112: File owner. */ u_int32_t di_gid; /* 116: File group. */ int32_t di_spare[2]; /* 120: Reserved; currently unused */ }; struct ufs2_dinode { u_int16_t di_mode; /* 0: IFMT, permissions; see below. */ int16_t di_nlink; /* 2: File link count. */ u_int32_t di_uid; /* 4: File owner. */ u_int32_t di_gid; /* 8: File group. */ u_int32_t di_blksize; /* 12: Inode blocksize. */ u_int64_t di_size; /* 16: File byte count. */ u_int64_t di_blocks; /* 24: Bytes actually held. */ int64_t di_atime; /* 32: Last access time. */ int64_t di_mtime; /* 40: Last modified time. */ int64_t di_ctime; /* 48: Last inode change time. */ int64_t di_birthtime; /* 56: Inode creation time. */ int32_t di_mtimensec; /* 64: Last modified time. */ int32_t di_atimensec; /* 68: Last access time. */ int32_t di_ctimensec; /* 72: Last inode change time. */ int32_t di_birthnsec; /* 76: Inode creation time. */ int32_t di_gen; /* 80: Generation number. */ u_int32_t di_kernflags; /* 84: Kernel flags. */ u_int32_t di_flags; /* 88: Status flags (chflags). */ int32_t di_extsize; /* 92: External attributes block. */ int64_t di_extb[NXADDR];/* 96: External attributes block. */ int64_t di_db[NDADDR]; /* 112: Direct disk blocks. */ int64_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */ int64_t di_spare[3]; /* 232: Reserved; currently unused */ }; /* * The di_db 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 di_inumber di_u.inumber #define di_ogid di_u.oldids[1] #define di_ouid di_u.oldids[0] #define di_rdev di_db[0] #define di_shortlink di_db #define MAXSYMLINKLEN_UFS1 ((NDADDR + NIADDR) * sizeof(int32_t)) #define MAXSYMLINKLEN_UFS2 ((NDADDR + NIADDR) * sizeof(int64_t)) #define MAXSYMLINKLEN(ip) \ ((ip)->i_ump->um_fstype == UM_UFS1) ? \ MAXSYMLINKLEN_UFS1 : MAXSYMLINKLEN_UFS2 /* File permissions. */ #define IEXEC 0000100 /* Executable. */ #define IWRITE 0000200 /* Writeable. */ #define IREAD 0000400 /* Readable. */ #define ISVTX 0001000 /* Sticky bit. */ #define ISGID 0002000 /* Set-gid. */ #define ISUID 0004000 /* Set-uid. */ /* File types. */ #define IFMT 0170000 /* Mask of file type. */ #define IFIFO 0010000 /* Named pipe (fifo). */ #define IFCHR 0020000 /* Character device. */ #define IFDIR 0040000 /* Directory file. */ #define IFBLK 0060000 /* Block device. */ #define IFREG 0100000 /* Regular file. */ #define IFLNK 0120000 /* Symbolic link. */ #define IFSOCK 0140000 /* UNIX domain socket. */ #define IFWHT 0160000 /* Whiteout. */ #endif /* _UFS_DINODE_H_ */
