1#!/usr/bin/perl
2#
3# Copyright (C) 1997
4# 	Peter Dufault, Joerg Wunsch.  All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27#
28
29#
30# Read and decode a SCSI disk's primary or grown defect list.
31#
32
33sub usage
34{
35    die "usage: scsi-defects raw-device-name [Glist|Plist]\n";
36}
37
38
39#
40# Main
41#
42
43&usage if $#ARGV < 0 || $#ARGV > 1;
44
45$ENV{'PATH'} = "/bin:/usr/bin:/sbin:/usr/sbin";
46
47$dev = $ARGV[0];
48
49# generic device name given?
50if ($dev =~ /^[so]d\d+$/) { $dev = "/dev/r${dev}.ctl"; }
51
52#
53# Select what you want to read.  PList include the primary defect list
54# from the factory.  GList is grown defects only.
55#
56if ($#ARGV > 0) {
57    if ($ARGV[1] =~ /^[Gg]/) { $glist = 1; $plist = 0; }
58    elsif ($ARGV[1] =~ /^[Pp]/) { $glist = 0; $plist = 1; }
59    else { &usage; }
60} else {
61    $glist = 1; $plist = 0;
62}
63
64open(PIPE, "scsi -f $dev " .
65     "-c '{ Op code} 37 0 0:3 v:1 v:1 5:3 0 0 0 0 4:i2 0' $plist $glist " .
66     "-i 4 '{ stuff } *i2 { Defect list length } i2' |") ||
67    die "Cannot pipe to scsi(8)\n";
68chop($amnt = <PIPE>);
69close(PIPE);
70
71if ($amnt == 0) {
72    print "There are no defects (in this list).\n";
73    exit 0;
74}
75
76print "There are " . $amnt / 8 . " defects in this list.\n";
77
78$amnt += 4;
79
80open(PIPE, "scsi -f $dev " .
81     "-c '{ Op code} 37 0 0:3 v:1 v:1 5:3 0 0 0 0 v:i2 0' $plist $glist " .
82     "$amnt -i $amnt - |") ||
83    die "Cannot pipe to scsi(8)\n";
84
85read(PIPE, $buf, 4);		# defect list header
86
87print "cylinder head  sector\n";
88
89while(read(PIPE, $buf, 8)) {
90    ($cylhi, $cyllo, $head, $sec) = unpack("CnCN", $buf);
91    printf "%8u %4u  %6u\n", $cylhi*65536+$cyllo, $head, $sec;
92}
93close(PIPE);
94