/* * Copyright (c) 1982, 1989, 1993 * The Regents of the University of California. All rights reserved. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 8.1 (Berkeley) 6/11/93 */ /* * 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 ((ino_t)2) /* * A dinode contains all the meta-data associated with a UFS file. * This structure defines the on-disk format of a dinode. */ #define NDADDR 12 /* direct addresses in inode */ #define NIADDR 3 /* indirect addresses in inode */ struct dinode { u_short di_mode; /* 0: mode and type of file */ short di_nlink; /* 2: number of links to file */ union { u_short oldids[2]; /* 4: ffs: old user and group ids */ ino_t inumber; /* 4: lfs: inode number */ } di_u; u_quad_t di_size; /* 8: number of bytes in file */ struct timespec di_atime; /* 16: time last accessed */ struct timespec di_mtime; /* 24: time last modified */ struct timespec di_ctime; /* 32: last time inode changed */ daddr_t di_db[NDADDR]; /* 40: disk block addresses */ daddr_t di_ib[NIADDR]; /* 88: indirect blocks */ u_long di_flags; /* 100: status flags */ long di_blocks; /* 104: blocks actually held */ long di_gen; /* 108: generation number */ u_long di_uid; /* 112: owner's user id */ u_long di_gid; /* 116: owner's group id */ long di_spare[2]; /* 120: 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_ouid di_u.oldids[0] #define di_ogid di_u.oldids[1] #define di_inumber di_u.inumber #define di_rdev di_db[0] #define di_shortlink di_db #define MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(daddr_t)) /* file modes */ #define IFMT 0170000 /* mask of file type */ #define IFIFO 0010000 /* named pipe (fifo) */ #define IFCHR 0020000 /* character special device */ #define IFDIR 0040000 /* directory */ #define IFBLK 0060000 /* block special device */ #define IFREG 0100000 /* regular file */ #define IFLNK 0120000 /* symbolic link */ #define IFSOCK 0140000 /* UNIX domain socket */ #define ISUID 04000 /* set user identifier when exec'ing */ #define ISGID 02000 /* set group identifier when exec'ing */ #define ISVTX 01000 /* save execution information on exit */ #define IREAD 0400 /* read permission */ #define IWRITE 0200 /* write permission */ #define IEXEC 0100 /* execute permission */