include/pt-bsd.h

   1 #ifndef UTIL_LINUX_PT_BSD_H
   2 #define UTIL_LINUX_PT_BSD_H
   3
   4 #define BSD_MAXPARTITIONS       16
   5 #define BSD_FS_UNUSED           0
   6
   7 #ifndef BSD_DISKMAGIC
   8 # define BSD_DISKMAGIC     ((uint32_t) 0x82564557)
   9 #endif
  10
  11 #define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
  12
  13 #if defined (__alpha__) || defined (__powerpc__) || \
  14     defined (__ia64__) || defined (__hppa__)
  15 # define BSD_LABELSECTOR   0
  16 # define BSD_LABELOFFSET   64
  17 #else
  18 # define BSD_LABELSECTOR   1
  19 # define BSD_LABELOFFSET   0
  20 #endif
  21
  22 #define BSD_BBSIZE        8192          /* size of boot area, with label */
  23 #define BSD_SBSIZE        8192          /* max size of fs superblock */
  24
  25 struct bsd_disklabel {
  26         uint32_t        d_magic;                /* the magic number */
  27         int16_t         d_type;                 /* drive type */
  28         int16_t         d_subtype;              /* controller/d_type specific */
  29         char            d_typename[16];         /* type name, e.g. "eagle" */
  30         char            d_packname[16];         /* pack identifier */
  31
  32                         /* disk geometry: */
  33         uint32_t        d_secsize;              /* # of bytes per sector */
  34         uint32_t        d_nsectors;             /* # of data sectors per track */
  35         uint32_t        d_ntracks;              /* # of tracks per cylinder */
  36         uint32_t        d_ncylinders;           /* # of data cylinders per unit */
  37         uint32_t        d_secpercyl;            /* # of data sectors per cylinder */
  38         uint32_t        d_secperunit;           /* # of data sectors per unit */
  39
  40         /*
  41          * Spares (bad sector replacements) below
  42          * are not counted in d_nsectors or d_secpercyl.
  43          * Spare sectors are assumed to be physical sectors
  44          * which occupy space at the end of each track and/or cylinder.
  45          */
  46         uint16_t        d_sparespertrack;       /* # of spare sectors per track */
  47         uint16_t        d_sparespercyl;         /* # of spare sectors per cylinder */
  48
  49         /*
  50          * Alternate cylinders include maintenance, replacement,
  51          * configuration description areas, etc.
  52          */
  53         uint32_t        d_acylinders;           /* # of alt. cylinders per unit */
  54
  55                         /* hardware characteristics: */
  56         /*
  57          * d_interleave, d_trackskew and d_cylskew describe perturbations
  58          * in the media format used to compensate for a slow controller.
  59          * Interleave is physical sector interleave, set up by the formatter
  60          * or controller when formatting.  When interleaving is in use,
  61          * logically adjacent sectors are not physically contiguous,
  62          * but instead are separated by some number of sectors.
  63          * It is specified as the ratio of physical sectors traversed
  64          * per logical sector.  Thus an interleave of 1:1 implies contiguous
  65          * layout, while 2:1 implies that logical sector 0 is separated
  66          * by one sector from logical sector 1.
  67          * d_trackskew is the offset of sector 0 on track N
  68          * relative to sector 0 on track N-1 on the same cylinder.
  69          * Finally, d_cylskew is the offset of sector 0 on cylinder N
  70          * relative to sector 0 on cylinder N-1.
  71          */
  72         uint16_t        d_rpm;                  /* rotational speed */
  73         uint16_t        d_interleave;           /* hardware sector interleave */
  74         uint16_t        d_trackskew;            /* sector 0 skew, per track */
  75         uint16_t        d_cylskew;              /* sector 0 skew, per cylinder */
  76         uint32_t        d_headswitch;           /* head switch time, usec */
  77         uint32_t        d_trkseek;              /* track-to-track seek, usec */
  78         uint32_t        d_flags;                /* generic flags */
  79         uint32_t        d_drivedata[5];         /* drive-type specific information */
  80         uint32_t        d_spare[5];             /* reserved for future use */
  81         uint32_t        d_magic2;               /* the magic number (again) */
  82         uint16_t        d_checksum;             /* xor of data incl. partitions */
  83
  84                         /* filesystem and partition information: */
  85         uint16_t        d_npartitions;          /* number of partitions in following */
  86         uint32_t        d_bbsize;               /* size of boot area at sn0, bytes */
  87         uint32_t        d_sbsize;               /* max size of fs superblock, bytes */
  88
  89         struct bsd_partition     {              /* the partition table */
  90                 uint32_t        p_size;         /* number of sectors in partition */
  91                 uint32_t        p_offset;       /* starting sector */
  92                 uint32_t        p_fsize;        /* filesystem basic fragment size */
  93                 uint8_t         p_fstype;       /* filesystem type, see below */
  94                 uint8_t         p_frag;         /* filesystem fragments per block */
  95                 uint16_t        p_cpg;          /* filesystem cylinders per group */
  96         } __attribute__((packed)) d_partitions[BSD_MAXPARTITIONS];      /* actually may be more */
  97 } __attribute__((packed));
  98
  99
 100 /* d_type values: */
 101 #define BSD_DTYPE_SMD           1               /* SMD, XSMD; VAX hp/up */
 102 #define BSD_DTYPE_MSCP          2               /* MSCP */
 103 #define BSD_DTYPE_DEC           3               /* other DEC (rk, rl) */
 104 #define BSD_DTYPE_SCSI          4               /* SCSI */
 105 #define BSD_DTYPE_ESDI          5               /* ESDI interface */
 106 #define BSD_DTYPE_ST506         6               /* ST506 etc. */
 107 #define BSD_DTYPE_HPIB          7               /* CS/80 on HP-IB */
 108 #define BSD_DTYPE_HPFL          8               /* HP Fiber-link */
 109 #define BSD_DTYPE_FLOPPY        10              /* floppy */
 110
 111 /* d_subtype values: */
 112 #define BSD_DSTYPE_INDOSPART    0x8             /* is inside dos partition */
 113 #define BSD_DSTYPE_DOSPART(s)   ((s) & 3)       /* dos partition number */
 114 #define BSD_DSTYPE_GEOMETRY     0x10            /* drive params in label */
 115
 116 /*
 117  * Filesystem type and version.
 118  * Used to interpret other filesystem-specific
 119  * per-partition information.
 120  */
 121 #define BSD_FS_UNUSED   0               /* unused */
 122 #define BSD_FS_SWAP     1               /* swap */
 123 #define BSD_FS_V6       2               /* Sixth Edition */
 124 #define BSD_FS_V7       3               /* Seventh Edition */
 125 #define BSD_FS_SYSV     4               /* System V */
 126 #define BSD_FS_V71K     5               /* V7 with 1K blocks (4.1, 2.9) */
 127 #define BSD_FS_V8       6               /* Eighth Edition, 4K blocks */
 128 #define BSD_FS_BSDFFS   7               /* 4.2BSD fast file system */
 129 #define BSD_FS_BSDLFS   9               /* 4.4BSD log-structured file system */
 130 #define BSD_FS_OTHER    10              /* in use, but unknown/unsupported */
 131 #define BSD_FS_HPFS     11              /* OS/2 high-performance file system */
 132 #define BSD_FS_ISO9660  12              /* ISO-9660 filesystem (cdrom) */
 133 #define BSD_FS_ISOFS    BSD_FS_ISO9660
 134 #define BSD_FS_BOOT     13              /* partition contains bootstrap */
 135 #define BSD_FS_ADOS     14              /* AmigaDOS fast file system */
 136 #define BSD_FS_HFS      15              /* Macintosh HFS */
 137 #define BSD_FS_ADVFS    16              /* Digital Unix AdvFS */
 138
 139 /* this is annoying, but it's also the way it is :-( */
 140 #ifdef __alpha__
 141 #define BSD_FS_EXT2     8               /* ext2 file system */
 142 #else
 143 #define BSD_FS_MSDOS    8               /* MS-DOS file system */
 144 #endif
 145
 146 /*
 147  * flags shared by various drives:
 148  */
 149 #define BSD_D_REMOVABLE 0x01            /* removable media */
 150 #define BSD_D_ECC       0x02            /* supports ECC */
 151 #define BSD_D_BADSECT   0x04            /* supports bad sector forw. */
 152 #define BSD_D_RAMDISK   0x08            /* disk emulator */
 153 #define BSD_D_CHAIN     0x10            /* can do back-back transfers */
 154 #define BSD_D_DOSPART   0x20            /* within MSDOS partition */
 155
 156 #endif /* UTIL_LINUX_PT_BSD_H */