FreeBSD/Linux Kernel Cross Reference
sys/bsd/sys/disktab.h

     /*
      * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
      *
      * @APPLE_LICENSE_HEADER_START@
      * 
      * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
      * 
      * This file contains Original Code and/or Modifications of Original Code
      * as defined in and that are subject to the Apple Public Source License
     * Version 2.0 (the 'License'). You may not use this file except in
     * compliance with the License. Please obtain a copy of the License at
     * http://www.opensource.apple.com/apsl/ and read it before using this
     * file.
     * 
     * The Original Code and all software distributed under the License are
     * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
     * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
     * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
     * Please see the License for the specific language governing rights and
     * limitations under the License.
     * 
     * @APPLE_LICENSE_HEADER_END@
     */
    /*
     * HISTORY:
     * 16-Mar-88  John Seamons (jks) at NeXT
     *      Cleaned up to support standard disk label definitions.
     *
     * 24-Feb-88  Mike DeMoney (mike) at NeXT
     *      Added d_boot0_blkno to indicate logical block number
     *      of "block 0" boot.  This blkno is in d_secsize sectors.
     *      Added d_bootfile to indicate the default operating system
     *      image to be booted by the blk 0 boot.
     *      Changed d_name and d_type to be char arrays rather than ptrs
     *      so they are part of label.  This limits length of info in
     *      /etc/disktab, sorry.
     */
    
    #ifndef _SYS_DISKTAB_
    #define _SYS_DISKTAB_
    
    #include <sys/appleapiopts.h>
    
    #ifdef  __APPLE_API_OBSOLETE
    
    /*
     * Disk description table, see disktab(5)
     */
    #ifndef KERNEL
    #define DISKTAB         "/etc/disktab"
    #endif  /* !KERNEL */
    
    #define MAXDNMLEN       24      // drive name length
    #define MAXMPTLEN       16      // mount point length
    #define MAXFSTLEN       8       // file system type length
    #define MAXTYPLEN       24      // drive type length
    #define NBOOTS          2       // # of boot blocks
    #define MAXBFLEN        24      // bootfile name length
    #define MAXHNLEN        32      // host name length
    #define NPART           8       // # of partitions
    
    typedef struct partition {
            int     p_base;         /* base sector# of partition */
            int     p_size;         /* #sectors in partition */
            short   p_bsize;        /* block size in bytes */
            short   p_fsize;        /* frag size in bytes */
            char    p_opt;          /* 's'pace/'t'ime optimization pref */
            short   p_cpg;          /* cylinders per group */
            short   p_density;      /* bytes per inode density */
            char    p_minfree;      /* minfree (%) */
            char    p_newfs;        /* run newfs during init */
            char    p_mountpt[MAXMPTLEN];/* mount point */
            char    p_automnt;      /* auto-mount when inserted */
            char    p_type[MAXFSTLEN];/* file system type */
    } partition_t;
    
    typedef struct disktab {
            char    d_name[MAXDNMLEN];      /* drive name */
            char    d_type[MAXTYPLEN];      /* drive type */
            int     d_secsize;              /* sector size in bytes */
            int     d_ntracks;              /* # tracks/cylinder */
            int     d_nsectors;             /* # sectors/track */
            int     d_ncylinders;           /* # cylinders */
            int     d_rpm;                  /* revolutions/minute */
            short   d_front;                /* size of front porch (sectors) */
            short   d_back;                 /* size of back porch (sectors) */
            short   d_ngroups;              /* number of alt groups */
            short   d_ag_size;              /* alt group size (sectors) */
            short   d_ag_alts;              /* alternate sectors / alt group */
            short   d_ag_off;               /* sector offset to first alternate */
            int     d_boot0_blkno[NBOOTS];  /* "blk 0" boot locations */
            char    d_bootfile[MAXBFLEN];   /* default bootfile */
            char    d_hostname[MAXHNLEN];   /* host name */
            char    d_rootpartition;        /* root partition e.g. 'a' */
            char    d_rwpartition;          /* r/w partition e.g. 'b' */
            partition_t d_partitions[NPART];
    } disktab_t;
    
   #ifndef KERNEL
   struct  disktab *getdiskbyname(), *getdiskbydev();
   #endif  /* !KERNEL */
   
   #endif  /* __APPLE_API_OBSOLETE */
   
   #endif  /* _SYS_DISKTAB_ */

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