/usr/sbin/qemu-make-debian-root is in qemu-utils 2.0.0~rc1+dfsg-0ubuntu3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | #! /bin/sh -e
#
# $Id: qemu-make-debian-root 353 2008-10-16 20:28:22Z aurel32 $
#
# Script to make a debian root image.
#
set -e
which uudecode >/dev/null || {
echo "error: missing sharutils package" >&2
exit 1
}
which debootstrap >/dev/null || {
echo "error: missing debootstrap package" >&2
exit 1
}
KEEPFS=0
SPARSE=0
while :; do
case "$1" in
-k)
KEEPFS=1
;;
-s)
SPARSE=1
;;
-ks|-sk)
KEEPFS=1
SPARSE=1
;;
*)
break
;;
esac
shift
done
if [ $# -lt 4 ]; then
echo Usage: "$0 [-ks] size-in-MB distrib deburl image [files_to_copy_in_/root]" >&2
echo "eg $0 150 sid http://proxy:10000/debian qemu" >&2
echo "-k keep file system -s sparse image" >&2
echo "$0 is normally run as root." >&2
exit 1
fi
SIZE=$1
DISTRO=$2
URL=$3
IMAGE=$4
shift 4
# now files to copy are in "$@". We don't put them in a variable
# because that would coufuse spaces-in-filenames with
# whitespace-separation.
if [ $SIZE -lt 130 ]; then
echo 'Size must be at least 130 megabytes (Debian unstable takes 100)' >&2
exit 1
fi
cleanup()
{
echo Cleaning up... >&2
umount -d $TMP_DIR || true
rm -f $IMAGE.ext2 $IMAGE
}
trap cleanup EXIT
HEADS=16
SECTORS=63
# 512 bytes in a sector: cancel the 512 with one of the 1024s...
CYLINDERS=$(( $SIZE * 1024 * 2 / ($HEADS * $SECTORS) ))
# Create a filesystem: one track for partition table.
if [ "$SPARSE" = "1" ]; then
dd bs=$(($SECTORS * 512)) if=/dev/zero of=$IMAGE.ext2 count=1 seek=$(($CYLINDERS * $HEADS - 2))
else
dd bs=$(($SECTORS * 512)) if=/dev/zero of=$IMAGE.ext2 count=$(($CYLINDERS * $HEADS - 1))
fi
mke2fs -q -m1 -F $IMAGE.ext2
TMP_DIR="$(mktemp -d /tmp/mount.XXXXXX)" || \
{ echo >&2 "Failed to create temporary directory"; exit 1; }
# Mount it.
mount -o loop $IMAGE.ext2 $TMP_DIR
# Do debian install on it.
debootstrap --variant=minbase $DISTRO $TMP_DIR $URL
# Final configuration.
cat > $TMP_DIR/etc/fstab <<EOF
/dev/hda1 / ext2 errors=remount-ro 0 1
proc /proc proc defaults 0 0
EOF
# Console on ttyS0, not tty1, and no other gettys.
sed 's,1:2345:respawn:/sbin/getty 38400 tty1,1:2345:respawn:/sbin/getty 38400 ttyS0,' < $TMP_DIR/etc/inittab | sed 's,^.:23:respawn.*,,' > $TMP_DIR/etc/inittab.new
mv $TMP_DIR/etc/inittab.new $TMP_DIR/etc/inittab
# Set hostname to base of image name.
basename $IMAGE > $TMP_DIR/etc/hostname
# Create /etc/shadow
chroot $TMP_DIR pwconv
# Set root password to "root"
sed 's/^root:[^:]*/root:$1$aybpiIGf$cB7iFDNZvViQtQjEZ5HFQ0/' < $TMP_DIR/etc/shadow > $TMP_DIR/etc/shadow.new
mv $TMP_DIR/etc/shadow.new $TMP_DIR/etc/shadow
# Remove packages we don't need
chroot $TMP_DIR /usr/bin/dpkg --remove console-common console-tools console-data base-config man-db manpages
# Try to remove all libraries: some won't be removable.
chroot $TMP_DIR dpkg --remove `chroot $TMP_DIR dpkg --get-selections | sed -n 's/^\(lib[^ \t]*\)[\t ]*install/\1/p'` 2>/dev/null || true
# Copy wanted files to /root if asked to
if [ $# -gt 0 ]; then
cp -a "$@" $TMP_DIR/root/
fi
umount -d $TMP_DIR
# Create file with partition table.
uudecode -o- << "EOF" | gunzip > $IMAGE
begin 664 partition-table.gz
M'XL("*_<##\"`W!A<G1I=&EO;BUT86)L90#LT#$-`"`0!,&']D6A`D6XP1T&
M"%B@))FIMKGF(OA9C;%;EENYZO.Z3P\"````!P``__\:!0````#__QH%````
M`/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%
M`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#_
M_QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0``
M``#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:
M!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````
M__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`
M````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__
M&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%````
M`/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%
M`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#_
M_QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0``
M``#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:
M!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`````
M__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__&@4`
M````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%`````/__
M&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%````
M`/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#__QH%
M`````/__&@4`````__\:!0````#__QH%`````/__&@4`````__\:!0````#_
M_QH%`````/__&@4`````__\:!0````#__QH%`````/__0@``````__\#`%&_
&<90`?@``
`
end
EOF
dd if=$IMAGE.ext2 of=$IMAGE seek=$((`stat -c%s $IMAGE` / 512)) bs=512
rm $IMAGE.ext2
# Repartition so one partition covers entire disk.
echo '63,' | sfdisk -uS -H$HEADS -S$SECTORS -C$CYLINDERS $IMAGE
trap "" EXIT
echo Done.
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