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Annotation of Net2/ufs/dinode.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1989 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
                     33:  *     @(#)dinode.h    7.10 (Berkeley) 5/8/91
                     34:  */
                     35: 
                     36: /*
                     37:  * A dinode contains all the meta-data associated with a UFS file.
                     38:  * This structure defines the on-disk format of a dinode.
                     39:  */
                     40: 
                     41: #define        NDADDR  12              /* direct addresses in inode */
                     42: #define        NIADDR  3               /* indirect addresses in inode */
                     43: 
                     44: struct dinode {
                     45:        u_short di_mode;        /*  0: mode and type of file */
                     46:        short   di_nlink;       /*  2: number of links to file */
                     47:        uid_t   di_uid;         /*  4: owner's user id */
                     48:        gid_t   di_gid;         /*  6: owner's group id */
                     49:        u_quad  di_qsize;       /*  8: number of bytes in file */
                     50:        time_t  di_atime;       /* 16: time last accessed */
                     51:        long    di_atspare;
                     52:        time_t  di_mtime;       /* 24: time last modified */
                     53:        long    di_mtspare;
                     54:        time_t  di_ctime;       /* 32: last time inode changed */
                     55:        long    di_ctspare;
                     56:        daddr_t di_db[NDADDR];  /* 40: disk block addresses */
                     57:        daddr_t di_ib[NIADDR];  /* 88: indirect blocks */
                     58:        long    di_flags;       /* 100: status, currently unused */
                     59:        long    di_blocks;      /* 104: blocks actually held */
                     60:        long    di_gen;         /* 108: generation number */
                     61:        long    di_spare[4];    /* 112: reserved, currently unused */
                     62: };
                     63: 
                     64: #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */
                     65: #define        di_size         di_qsize.val[0]
                     66: #else /* BYTE_ORDER == BIG_ENDIAN */
                     67: #define        di_size         di_qsize.val[1]
                     68: #endif
                     69: #define        di_rdev         di_db[0]
                     70: 
                     71: /* file modes */
                     72: #define        IFMT            0170000         /* mask of file type */
                     73: #define        IFIFO           0010000         /* named pipe (fifo) */
                     74: #define        IFCHR           0020000         /* character special device */
                     75: #define        IFDIR           0040000         /* directory */
                     76: #define        IFBLK           0060000         /* block special device */
                     77: #define        IFREG           0100000         /* regular file */
                     78: #define        IFLNK           0120000         /* symbolic link */
                     79: #define        IFSOCK          0140000         /* UNIX domain socket */
                     80: 
                     81: #define        ISUID           04000           /* set user identifier when exec'ing */
                     82: #define        ISGID           02000           /* set group identifier when exec'ing */
                     83: #define        ISVTX           01000           /* save execution information on exit */
                     84: #define        IREAD           0400            /* read permission */
                     85: #define        IWRITE          0200            /* write permission */
                     86: #define        IEXEC           0100            /* execute permission */

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