bsd/sys/disktab.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * HISTORY:
  27  * 16-Mar-88  John Seamons (jks) at NeXT
  28  *      Cleaned up to support standard disk label definitions.
  29  *
  30  * 24-Feb-88  Mike DeMoney (mike) at NeXT
  31  *      Added d_boot0_blkno to indicate logical block number
  32  *      of "block 0" boot.  This blkno is in d_secsize sectors.
  33  *      Added d_bootfile to indicate the default operating system
  34  *      image to be booted by the blk 0 boot.
  35  *      Changed d_name and d_type to be char arrays rather than ptrs
  36  *      so they are part of label.  This limits length of info in
  37  *      /etc/disktab, sorry.
  38  */
  39
  40 #ifndef _SYS_DISKTAB_
  41 #define _SYS_DISKTAB_
  42
  43 #include <sys/appleapiopts.h>
  44
  45 #ifdef  __APPLE_API_OBSOLETE
  46
  47 /*
  48  * Disk description table, see disktab(5)
  49  */
  50 #ifndef KERNEL
  51 #define DISKTAB         "/etc/disktab"
  52 #endif  /* !KERNEL */
  53
  54 #define MAXDNMLEN       24      // drive name length
  55 #define MAXMPTLEN       16      // mount point length
  56 #define MAXFSTLEN       8       // file system type length
  57 #define MAXTYPLEN       24      // drive type length
  58 #define NBOOTS          2       // # of boot blocks
  59 #define MAXBFLEN        24      // bootfile name length
  60 #define MAXHNLEN        32      // host name length
  61 #define NPART           8       // # of partitions
  62
  63 typedef struct partition {
  64         int     p_base;         /* base sector# of partition */
  65         int     p_size;         /* #sectors in partition */
  66         short   p_bsize;        /* block size in bytes */
  67         short   p_fsize;        /* frag size in bytes */
  68         char    p_opt;          /* 's'pace/'t'ime optimization pref */
  69         short   p_cpg;          /* cylinders per group */
  70         short   p_density;      /* bytes per inode density */
  71         char    p_minfree;      /* minfree (%) */
  72         char    p_newfs;        /* run newfs during init */
  73         char    p_mountpt[MAXMPTLEN];/* mount point */
  74         char    p_automnt;      /* auto-mount when inserted */
  75         char    p_type[MAXFSTLEN];/* file system type */
  76 } partition_t;
  77
  78 typedef struct disktab {
  79         char    d_name[MAXDNMLEN];      /* drive name */
  80         char    d_type[MAXTYPLEN];      /* drive type */
  81         int     d_secsize;              /* sector size in bytes */
  82         int     d_ntracks;              /* # tracks/cylinder */
  83         int     d_nsectors;             /* # sectors/track */
  84         int     d_ncylinders;           /* # cylinders */
  85         int     d_rpm;                  /* revolutions/minute */
  86         short   d_front;                /* size of front porch (sectors) */
  87         short   d_back;                 /* size of back porch (sectors) */
  88         short   d_ngroups;              /* number of alt groups */
  89         short   d_ag_size;              /* alt group size (sectors) */
  90         short   d_ag_alts;              /* alternate sectors / alt group */
  91         short   d_ag_off;               /* sector offset to first alternate */
  92         int     d_boot0_blkno[NBOOTS];  /* "blk 0" boot locations */
  93         char    d_bootfile[MAXBFLEN];   /* default bootfile */
  94         char    d_hostname[MAXHNLEN];   /* host name */
  95         char    d_rootpartition;        /* root partition e.g. 'a' */
  96         char    d_rwpartition;          /* r/w partition e.g. 'b' */
  97         partition_t d_partitions[NPART];
  98 } disktab_t;
  99
 100 #ifndef KERNEL
 101 struct  disktab *getdiskbyname(), *getdiskbydev();
 102 #endif  /* !KERNEL */
 103
 104 #endif  /* __APPLE_API_OBSOLETE */
 105
 106 #endif  /* _SYS_DISKTAB_ */