usr/src/sys/ufs/dinode.h

/*
 * Copyright (c) 1982, 1989 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    7.10 (Berkeley) 5/8/91
 */

/*
 * 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 */
        uid_t   di_uid;         /*  4: owner's user id */
        gid_t   di_gid;         /*  6: owner's group id */
        u_quad  di_qsize;       /*  8: number of bytes in file */
        time_t  di_atime;       /* 16: time last accessed */
        long    di_atspare;
        time_t  di_mtime;       /* 24: time last modified */
        long    di_mtspare;
        time_t  di_ctime;       /* 32: last time inode changed */
        long    di_ctspare;
        daddr_t di_db[NDADDR];  /* 40: disk block addresses */
        daddr_t di_ib[NIADDR];  /* 88: indirect blocks */
        long    di_flags;       /* 100: status, currently unused */
        long    di_blocks;      /* 104: blocks actually held */
        long    di_gen;         /* 108: generation number */
        long    di_spare[4];    /* 112: reserved, currently unused */
};

#if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */
#define di_size         di_qsize.val[0]
#else /* BYTE_ORDER == BIG_ENDIAN */
#define di_size         di_qsize.val[1]
#endif
#define di_rdev         di_db[0]

/* 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 */