1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
#!/bin/sh
# Create GRUB boot floppy.
# Copyright (C) 2001 Jason Thomas <jason@debian.org>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
# Initialize some variables.
dd=`which dd`
ls=`which ls`
head=`which head`
pkglibdir=/usr/lib/grub/*-*
stage1=`$ls -1 $pkglibdir/stage1 | $head -1`
stage2=`$ls -1 $pkglibdir/stage2 | $head -1`
# I like functions.
abort()
{
/bin/echo -e "\n$@\n" >&2
exit 1
}
checkfiles()
{
[ -x "$dd" ] || abort "Can't find $dd, aborting"
[ -f "$stage1" ] || abort "Can't find $stage1, aborting"
[ -f "$stage2" ] || abort "Can't find $stage2, aborting"
}
usage()
{
cat <<EOF
Usage: $0 [options] <block device>
Create GRUB boot floppy.
options:
-h, --help print this message and exit
EOF
exit 1
}
checkdevice()
{
[ -z "$1" ] && abort "checkdevice() takes block device as parameter"
[ -b "$1" ] || abort "$1 is not a block device, aborting"
[ -w "$1" ] || abort "$1 is not a writeable block device, aborting"
}
questiondevice()
{
[ -z "$1" ] && abort "questiondevice() takes block device as parameter"
echo "You are about to overwrite the boot sector of the following device:"
echo "$1"
echo -n "Are you sure you want to take this action (y/N) "
read answer
case "$answer" in
y* | Y*)
# let this fall through to the next function
;;
*)
abort "Not continuing as you wish"
;;
esac
}
createfloppy()
{
[ -z "$1" ] && abort "createfloppy() takes block device as parameter"
/bin/echo -e "Creating grub boot floppy now, please be patient ...\n"
# heres where we actually create the floppy :-p
$dd if="$stage1" of="$1" bs="512" count="1"
$dd if="$stage2" of="$1" bs="512" seek="1"
/bin/echo -e "\nThat's All Folks!"
}
case "$1" in
-h | --help)
usage
;;
*)
if [ -z "$1" ] ; then
usage
else
checkfiles
checkdevice "$1"
questiondevice "$1"
createfloppy "$1"
fi
;;
esac
exit 0
|
