# 2.11BSD#431 - /usr/src/sys/h/dkbad.h

##### Macros

    BSE               X
    CONT              X
    ECC               X
    MAXBAD            X
    SSE               X

##### struct's

    bt_bad            X
    dkbad             X

       1: /*
       2:  * Copyright (c) 1986 Regents of the University of California.
       3:  * All rights reserved.  The Berkeley software License Agreement
       4:  * specifies the terms and conditions for redistribution.
       5:  *
       6:  *	@(#)dkbad.h	1.1 (2.10BSD Berkeley) 12/1/86
       7:  */
       8:
       9: /*
      10:  * Definitions needed to perform bad sector
      11:  * revectoring ala DEC STD 144.
      12:  *
      13:  * The bad sector information is located in the
      14:  * first 5 even numbered sectors of the last
      15:  * track of the disk pack.  There are five
      16:  * identical copies of the information, described
      17:  * by the dkbad structure.
      18:  *
      19:  * Replacement sectors are allocated starting with
      20:  * the first sector before the bad sector information
      21:  * and working backwards towards the beginning of
      22:  * the disk.  A maximum of 126 bad sectors are supported.
      23:  * The position of the bad sector in the bad sector table
      24:  * determines which replacement sector it corresponds to.
      25:  *
      26:  * The bad sector information and replacement sectors
      27:  * are conventionally only accessible through the
      28:  * 'c' file system partition of the disk.  If that
      29:  * partition is used for a file system, the user is
      30:  * responsible for making sure that it does not overlap
      31:  * the bad sector information or any replacement sector.s
      32:  */
      33:
      34: /*
      35:  * The 2.10BSD system defines MAXBAD as 32, not 126, although there
      36:  * should be no problem with increasing that value.  It's your basic
      37:  * space tradeoff.  Also, 2.10 drivers tend to have the bad sector
      38:  * information available through the 'h' file system partition, although
      39:  * there are exceptions to this rule.  Note, this value is also present
      40:  * in the bad144 program.
      41:  */
      42: #define MAXBAD  32          /* Maximum bad sectors supported */
      43:
      44: struct dkbad {
      45:     long    bt_csn;         /* cartridge serial number */
      46:     u_short bt_mbz;         /* unused; should be 0 */
      47:     u_short bt_flag;        /* -1 => alignment cartridge */
      48:     struct bt_bad {
      49:         u_short bt_cyl;     /* cylinder number of bad sector */
      50:         u_short bt_trksec;  /* track and sector number */
      51:     } bt_bad[MAXBAD];
      52: };
      53:
      54: #define ECC 0
      55: #define SSE 1
      56: #define BSE 2
      57: #define CONT    3

#### Defined struct's

bt_bad defined in line 48; used 2 times

- in /usr/src/usr.sbin/bad144/bad144.c line 67(2)

dkbad defined in line 44; used 12 times

- in /usr/src/sys/pdpuba/dkbad.c line 21(2)
- in /usr/src/sys/pdpuba/hk.c line 87(2), 414(2)
- in /usr/src/sys/pdpuba/xp.c line 93(2), 487(2)
- in /usr/src/usr.sbin/bad144/bad144.c line 56(2)

#### Defined macros

BSE defined in line 56; used 2 times

- in /usr/src/sys/pdpuba/hk.c line 594
- in /usr/src/sys/pdpuba/xp.c line 722

CONT defined in line 57; used 4 times

- in /usr/src/sys/pdpuba/hk.c line 571, 794
- in /usr/src/sys/pdpuba/xp.c line 689, 824

ECC defined in line 54; used 2 times

- in /usr/src/sys/pdpuba/hk.c line 610
- in /usr/src/sys/pdpuba/xp.c line 751

MAXBAD defined in line 42; used 6 times

- in line 51
- in /usr/src/sys/pdpuba/dkbad.c line 27
- in /usr/src/usr.sbin/bad144/bad144.c line 121, 142-145(3)

SSE defined in line 55; never used

#### Usage of this include

dkbad.h used 4 times

- in /usr/src/sys/pdpuba/dkbad.c line 12
- in /usr/src/sys/pdpuba/hk.c line 44
- in /usr/src/sys/pdpuba/xp.c line 25
- in /usr/src/usr.sbin/bad144/bad144.c line 30

Last modified: 1987-08-23 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 526 |