bsd/sys/disktab.h

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