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challenge: Update init to use losetup for disk bonus

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This commit is contained in:
nemunaire 2022-03-01 22:31:02 +01:00
parent 882ef1c3f8
commit bb95bfee29
1 changed files with 16 additions and 4 deletions
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20
pkg/challenge/init
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@ -63,16 +63,28 @@ done
/usr/bin/setsid /bin/shadow-up > /dev/null 2> /var/log/sup.log &
# Prepare bonus 2
rm /dev/null; mknod -m 0666 /dev/null c 1 3
rm /dev/zero; mknod -m 0666 /dev/zero c 1 5
mkdir -p /mnt
for l in a b c d e f g h i j k l m n o p q r s t u v w x y z zz; do
[ -b /dev/sd$l ] || break
done
/bin/dd if=/dev/zero of=/dev/sd${l} count=1 > /dev/null 2> /dev/null
/bin/dd if=/dev/zero of=/dev/sd${l}1 count=1 bs=10240000 > /dev/null 2> /dev/null
/sbin/mkfs.ext4 /dev/sd${l}1 > /dev/null 2> /dev/null
mount /dev/sd${l}1 /mnt > /dev/null 2> /dev/null
/bin/dd if=/dev/zero of=/dev/blk count=1 bs=10240000 > /dev/null 2> /dev/null
cat <<EOF | fdisk /dev/blk
n
p
1
w
EOF
LOOPDEV=$(losetup -f)
losetup -P "${LOOPDEV}" /dev/blk
/sbin/mkfs.ext4 "${LOOPDEV}p1" > /dev/null 2> /dev/null
mount "${LOOPDEV}" /mnt > /dev/null 2> /dev/null
N1=$((72 - $RANDOM % 35))
N2=$((25 + $RANDOM % 35))
{