usr/src/sys/ufs/ufs/dinode.h

/*
 * Copyright (c) 1982, 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)dinode.h    7.9 (Berkeley) %G%
 */

/*
 * This structure defines the on-disk format of an inode.
 */

#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         /* type of file */
#define IFIFO           0010000         /* named pipe (fifo) */
#define IFCHR           0020000         /* character special */
#define IFDIR           0040000         /* directory */
#define IFBLK           0060000         /* block special */
#define IFREG           0100000         /* regular */
#define IFLNK           0120000         /* symbolic link */
#define IFSOCK          0140000         /* socket */

#define ISUID           04000           /* set user id on execution */
#define ISGID           02000           /* set group id on execution */
#define ISVTX           01000           /* save swapped text even after use */
#define IREAD           0400            /* read, write, execute permissions */
#define IWRITE          0200
#define IEXEC           0100