# set -e
-mountpoint=/live_media
-root_persistence="casper-rw"
-home_persistence="home-rw"
+export PATH=/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin
+
+mountpoint=/cdrom
mkdir -p $mountpoint
overlay_method=devmapper
fi
-USERNAME=debian
-USERFULLNAME="Debian Live user"
-HOST=debian
+USERNAME=ubuntu
+USERFULLNAME="Ubuntu LiveCD user"
+HOST=ubuntu
[ -f /etc/casper.conf ] && . /etc/casper.conf
export USERNAME USERFULLNAME HOST
-casper_path() { # Fixme: uglyness
+casper_path() {
path=$1
if [ -e "$path/casper/filesystem.cloop" ]; then
echo "$path/casper/filesystem.cloop"
elif [ -e "$path/casper/filesystem.squashfs" ]; then
echo "$path/casper/filesystem.squashfs"
return 0
- elif [ -e "$path/casper/filesystem.ext2" ]; then
- echo "$path/casper/filesystem.ext2"
- return 0
- elif [ -e "$path/casper/filesystem.xfs" ]; then
- echo "$path/casper/filesystem.xfs"
- return 0
fi
return 1
}
*.cloop)
echo $(setup_loop "$1" "cloop" "/sys/block/cloop*")
;;
- *.squashfs|*.ext2|*.xfs)
+ *.squashfs)
echo $(setup_loop "$1" "loop" "/sys/block/loop*")
;;
*)
local module=$2
local pattern=$3
- modprobe -qb "$module"
- if [ -x /sbin/udevplug ]; then
- udevplug -W
- else
- udevtrigger
- fi
+ modprobe -Qb "$module"
+ udevplug -W
for loopdev in $pattern; do
if [ "$(cat $loopdev/size)" -eq 0 ]; then
backdev="$1"
rootmnt="$2"
- modprobe -qb dm-mod
+ modprobe -Qb dm-mod
COW_DEVICE=/dev/ram1
COW_NAME="casper-cow"
return 1
}
-copy_to_ram() {
- copyto="${mountpoint}_swap"
-
- size=$(du -ks ${mountpoint} | cut -f1)
- size=$(expr ${size} + ${size}/20 ) # Fixme: 5% more to be sure
- needed_space=$(expr ${size} * 1024)
- freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
-
- if [ ! ${freespace} -lt ${needed_space} ] ; then
- [ "$quiet" != "y" ] && log_begin_msg "Not enough free memory to copy to ram"
- [ "$quiet" != "y" ] && log_end_msg
- return
- else
- [ "$quiet" != "y" ] && log_begin_msg "Copying live media to ram..."
- mkdir "${copyto}"
- mount -t tmpfs -o size=${size}k /dev/shm ${copyto}
- cp -a ${mountpoint}/* ${copyto}
- umount ${mountpoint}
- mount -r -o move ${copyto} ${mountpoint}
- rmdir ${copyto}
- [ "$quiet" != "y" ] && log_end_msg
- fi
-}
-
find_cow_device() {
- pers_label="${1}"
- cow_backing="/${pers_label}-backing"
- for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop); do
- for dev in $(subdevices "${sysblock}"); do
- devname=$(sys2dev "${dev}")
- if [ "$(/lib/udev/vol_id -l $devname 2>/dev/null)" = "${pers_label}" ]; then
- echo "$devname"
- return
- elif [ "$(get_fstype ${devname})" = "vfat" ]; then
- mkdir -p "${cow_backing}"
- if where_is_mounted ${devname} > /dev/null; then
- mount -o remount,rw ${devname} $(where_is_mounted ${devname}) || panic "Remounting failed"
- mount -o bind $(where_is_mounted ${devname}) ${cow_backing} || panic "Cannot bind-mount"
- else
- mount -t $(get_fstype "${devname}") -o rw "${devname}" ${cow_backing} || panic "Cannot mount $devname on /cow-backing"
- fi
-
- if [ -e "${cow_backing}/${pers_label}" ]; then
- echo $(setup_loop "${cow_backing}/${pers_label}" "loop" "/sys/block/loop*")
- return 0
- else
- umount ${cow_backing}
- fi
- fi
- done
- done
-}
-
-do_netmount() {
- rofsmnt="$1"
- # adapted from NFS filesystem mounting
-
- modprobe -q cifs
- # For DHCP
- modprobe -q af_packet
-
- ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf
- if [ "x${NFSROOT}" = "xauto" ]; then
- NFSROOT=${ROOTSERVER}:${ROOTPATH}
- fi
-
- NFSOPTS="-ouser=root,password="
+ for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop); do
+ for dev in $(subdevices "${sysblock}"); do
+ devname=$(sys2dev "${dev}")
+ if [ "$(/lib/udev/vol_id -l $devname 2>/dev/null)" = "casper-rw" ]; then
+ echo "$devname"
+ return
+ elif [ "$(get_fstype ${devname})" = "vfat" ]; then
+ mkdir -p /cow-backing
+ if where_is_mounted ${devname} > /dev/null; then
+ mount -o remount,rw ${devname} $(where_is_mounted ${devname}) || panic "Remounting failed"
+ mount -o bind $(where_is_mounted ${devname}) /cow-backing || panic "Cannot bind-mount"
+ else
+ mount -t $(get_fstype "${devname}") -o rw "${devname}" /cow-backing || panic "Cannot mount $devname on /cow-backing"
+ fi
- [ "$quiet" != "y" ] && log_begin_msg "Mounting using mount.cifs with ${NFSROOT} ${rofsmnt} ${NFSOPTS}"
- mount.cifs "${NFSROOT}" "${rofsmnt}" "${NFSOPTS}"
- [ "$quiet" != "y" ] && log_end_msg
+ if [ -e "/cow-backing/casper-rw" ]; then
+ echo $(setup_loop "/cow-backing/casper-rw" "loop" "/sys/block/loop*")
+ return 0
+ else
+ umount /cow-backing
+ fi
+ fi
+
+ done
+ done
+ return 1
}
setup_unionfs() {
backdev="$1"
rootmnt="$2"
- modprobe -qb unionfs
- mkdir -p /cow
- cowdevice="tmpfs"
- cow_fstype="tmpfs"
- # Looking for "${root_persistence}" device or file
- if grep -q persistent /proc/cmdline; then
- cowprobe=$(find_cow_device "${root_persistence}")
- if [ -b "${cowprobe}" ]; then
- cowdevice=${cowprobe}
- cow_fstype=$(get_fstype "${cowprobe}")
- else
- [ "$quiet" != "y" ] && log_begin_msg "Unable to find the persistent medium"
- fi
- fi
-
- mount ${cowdevice} -t ${cow_fstype} -o rw /cow || panic "Can not mount $cowdevice on /cow"
+ modprobe -Qb unionfs
+ mkdir -p /cow
+
+ if grep -q persistent /proc/cmdline; then
+ i=0
+ # We love udev and the kernel!
+ while [ "$i" -lt 300 ]; do
+ cowdevice=$(find_cow_device)
+ if [ -b "$cowdevice" ]; then
+ mount -t $(get_fstype "$cowdevice") -o rw "$cowdevice" /cow || panic "Can not mount $cowdevice on /cow"
+ break
+ fi
+ sleep 5
+# sleep 0.1
+ i=$(( $i + 1 ))
+ done
+ else
+ mount -t tmpfs tmpfs /cow
+ fi
mkdir -p /rofs
- if grep -q netboot /proc/cmdline; then
- do_netmount /rofs || panic "Can not mount netroot on /rofs"
- else
- if [ "$(get_fstype $backdev)" = "unknown" ]; then
- panic "Unknown file system type on $backdev"
- fi
- mount -t $(get_fstype "$backdev") -o ro "$backdev" /rofs || panic "Can not mount $backdev on /rofs"
- fi
-
+ if [ "$(get_fstype $backdev)" = "unknown" ]; then
+ panic "Unknown file system type on $backdev"
+ fi
+ mount -t $(get_fstype "$backdev") -o ro "$backdev" /rofs || panic "Can not mount $backdev on /rofs"
+
mount -t unionfs -o dirs=/cow=rw:/rofs=ro unionfs "$rootmnt"
- if grep -q show-cow /proc/cmdline; then
- mkdir -p "$rootmnt/cow"
- mount -o bind /cow "$rootmnt/cow"
- fi
- mkdir -p "$rootmnt/rofs"
- mount -o bind /rofs "$rootmnt/rofs"
-
- # Adding home persitence
- if grep -q homepersistence /proc/cmdline; then
- homecow=$(find_cow_device "${home_persistence}" )
- if [ -b "${homecow}" ]; then
- mount ${homecow} -t $(get_fstype "${homecow}") -o rw "${rootmnt}/home"
- else
- [ "$quiet" != "y" ] && log_begin_msg "Unable to find the persistent home medium"
- fi
- fi
+ if grep -q show-cow /proc/cmdline; then
+ mkdir -p "$rootmnt/cow"
+ mount -o bind /cow "$rootmnt/cow"
+ fi
+ mkdir -p "$rootmnt/rofs"
+ mount -o bind /rofs "$rootmnt/rofs"
}
is_usb_device() {
return 1
}
-find_live() {
+find_cd() {
mounted=
for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram); do
devname=$(sys2dev "${sysblock}")
set_usplash_timeout
for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
- live_image=$(find_live)
+ live_image=$(find_cd)
if [ "${live_image}" ]; then
break
fi
sleep 1
done
if [ "$?" -gt 0 ]; then
- panic "Unable to find a medium containing a live file system"
+ panic "Unable to find a CD-ROM containing a live file system"
fi
- if grep -q toram /proc/cmdline; then
- copy_to_ram
- fi
-
setup_cow "$overlay_method" "$(get_backing_device $live_image)" "$rootmnt"
- # show it on new rootfs
- mkdir ${rootmnt}/${mountpoint}
- mount -o bind ${mountpoint} ${rootmnt}/${mountpoint}
-
log_end_msg
maybe_break casper-bottom
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-bottom"
- PATH=/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:$PATH run_scripts /scripts/casper-bottom
+ run_scripts /scripts/casper-bottom
[ "$quiet" != "y" ] && log_end_msg
exec 1>&6 6>&-
projects / live-boot-grml.git / blobdiff