#!/bin/sh
# Fix for LP#150188

PREREQ=""
DESCRIPTION="Possibly disabling update-initramfs (useless on a live CD)..."

prereqs()
{
       echo "$PREREQ"
}

case $1 in
# get pre-requisites
prereqs)
       prereqs
       exit 0
       ;;
esac

. /scripts/casper-functions

log_begin_msg "$DESCRIPTION"

chroot /root dpkg-divert --add --rename --quiet \
        /usr/sbin/update-initramfs
# Running off a USB disk or other writable media.
if [ ! -e /root/usr/sbin/update-initramfs ] && \
   [ ! -L /root/usr/sbin/update-initramfs ]; then
    if [ -w /root/cdrom ] && \
       # rw is guaranteed to be first.
       grep -q ' /root/cdrom rw[, ]' /proc/self/mountinfo; then

        ln -s /usr/share/casper/casper-update-initramfs \
            /root/usr/sbin/update-initramfs
    else
        cat > /root/usr/sbin/update-initramfs <<EOF
#! /bin/sh
echo "update-initramfs is disabled since running on read-only media"
exit 0
EOF
        chmod 755 /root/usr/sbin/update-initramfs
    fi
fi

chmod 755 /root/usr/sbin/update-initramfs

log_end_msg