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Annotation of 43BSDReno/sys/ufs/dinode.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1989 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution is only permitted until one year after the first shipment
        !             6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !             7:  * binary forms are permitted provided that: (1) source distributions retain
        !             8:  * this entire copyright notice and comment, and (2) distributions including
        !             9:  * binaries display the following acknowledgement:  This product includes
        !            10:  * software developed by the University of California, Berkeley and its
        !            11:  * contributors'' in the documentation or other materials provided with the
        !            12:  * distribution and in all advertising materials mentioning features or use
        !            13:  * of this software.  Neither the name of the University nor the names of
        !            14:  * its contributors may be used to endorse or promote products derived from
        !            15:  * this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)dinode.h    7.9 (Berkeley) 6/28/90
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * This structure defines the on-disk format of an inode.
        !            25:  */
        !            26: 
        !            27: #define        NDADDR  12              /* direct addresses in inode */
        !            28: #define        NIADDR  3               /* indirect addresses in inode */
        !            29: 
        !            30: struct dinode {
        !            31:        u_short di_mode;        /*  0: mode and type of file */
        !            32:        short   di_nlink;       /*  2: number of links to file */
        !            33:        uid_t   di_uid;         /*  4: owner's user id */
        !            34:        gid_t   di_gid;         /*  6: owner's group id */
        !            35:        u_quad  di_qsize;       /*  8: number of bytes in file */
        !            36:        time_t  di_atime;       /* 16: time last accessed */
        !            37:        long    di_atspare;
        !            38:        time_t  di_mtime;       /* 24: time last modified */
        !            39:        long    di_mtspare;
        !            40:        time_t  di_ctime;       /* 32: last time inode changed */
        !            41:        long    di_ctspare;
        !            42:        daddr_t di_db[NDADDR];  /* 40: disk block addresses */
        !            43:        daddr_t di_ib[NIADDR];  /* 88: indirect blocks */
        !            44:        long    di_flags;       /* 100: status, currently unused */
        !            45:        long    di_blocks;      /* 104: blocks actually held */
        !            46:        long    di_gen;         /* 108: generation number */
        !            47:        long    di_spare[4];    /* 112: reserved, currently unused */
        !            48: };
        !            49: 
        !            50: #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */
        !            51: #define        di_size         di_qsize.val[0]
        !            52: #else /* BYTE_ORDER == BIG_ENDIAN */
        !            53: #define        di_size         di_qsize.val[1]
        !            54: #endif
        !            55: #define        di_rdev         di_db[0]
        !            56: 
        !            57: /* file modes */
        !            58: #define        IFMT            0170000         /* type of file */
        !            59: #define        IFIFO           0010000         /* named pipe (fifo) */
        !            60: #define        IFCHR           0020000         /* character special */
        !            61: #define        IFDIR           0040000         /* directory */
        !            62: #define        IFBLK           0060000         /* block special */
        !            63: #define        IFREG           0100000         /* regular */
        !            64: #define        IFLNK           0120000         /* symbolic link */
        !            65: #define        IFSOCK          0140000         /* socket */
        !            66: 
        !            67: #define        ISUID           04000           /* set user id on execution */
        !            68: #define        ISGID           02000           /* set group id on execution */
        !            69: #define        ISVTX           01000           /* save swapped text even after use */
        !            70: #define        IREAD           0400            /* read, write, execute permissions */
        !            71: #define        IWRITE          0200
        !            72: #define        IEXEC           0100

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