# looking for casper specifics options as kernel parameters
for x in $(cat /proc/cmdline); do
- case $x in
- netboot*)
- NETBOOT=${x#netboot=}
- export NETBOOT
- ;;
- toram)
- TORAM=1
- export TORAM
- ;;
- show-cow)
- SHOWCOW=1
- export SHOWCOW
- ;;
- persistent)
- PERSISTENT=1
- export PERSISTENT
- ;;
- esac
+ case $x in
+ netboot*)
+ export NETBOOT=${x#netboot=} ;;
+ toram)
+ export TORAM=1 ;;
+ show-cow)
+ export SHOWCOW=1 ;;
+ persistent)
+ export PERSISTENT=1 ;;
+ casper-getty)
+ export CASPERGETTY=1 ;;
+ esac
done
# sort of compatibility with netboot.h from linux docs
if [ -z "${NETBOOT}" ]; then
- if [ "${ROOT}" == "/dev/nfs" ]; then
- NETBOOT="nfs"
- export NETBOOT
- elif [ "${ROOT}" == "/dev/cifs" ]; then
- NETBOOT="cifs"
- export NETBOOT
- fi
+ if [ "${ROOT}" == "/dev/nfs" ]; then
+ NETBOOT="nfs"
+ export NETBOOT
+ elif [ "${ROOT}" == "/dev/cifs" ]; then
+ NETBOOT="cifs"
+ export NETBOOT
+ fi
fi
is_casper_path() {
- path=$1
- if [ -d "$path/casper" ]; then
- if [ "$(echo $path/casper/*.cloop)" != "$path/casper/*.cloop" ] ||
- [ "$(echo $path/casper/*.squashfs)" != "$path/casper/*.squashfs" ] ||
- [ "$(echo $path/casper/*.ext2)" != "$path/casper/*.ext2" ] ||
- [ "$(echo $path/casper/*.dir)" != "$path/casper/*.dir" ]; then
- return 0
- fi
- fi
- return 1
+ path=$1
+ if [ -d "$path/casper" ]; then
+ if [ "$(echo $path/casper/*.cloop)" != "$path/casper/*.cloop" ] ||
+ [ "$(echo $path/casper/*.squashfs)" != "$path/casper/*.squashfs" ] ||
+ [ "$(echo $path/casper/*.ext2)" != "$path/casper/*.ext2" ] ||
+ [ "$(echo $path/casper/*.dir)" != "$path/casper/*.dir" ]; then
+ return 0
+ fi
+ fi
+ return 1
}
subdevices() {
- sysblock=$1
- r=""
- for dev in "${sysblock}" "${sysblock}"/*; do
- if [ -e "${dev}/dev" ]; then
- r="${r} ${dev}"
- fi
- done
- echo ${r}
+ sysblock=$1
+ r=""
+ for dev in "${sysblock}" "${sysblock}"/*; do
+ if [ -e "${dev}/dev" ]; then
+ r="${r} ${dev}"
+ fi
+ done
+ echo ${r}
}
get_backing_device() {
- case "$1" in
- *.cloop)
- echo $(setup_loop "$1" "cloop" "/sys/block/cloop*")
- ;;
- *.squashfs|*.ext2)
- echo $(setup_loop "$1" "loop" "/sys/block/loop*")
- ;;
- *.dir)
- echo "directory"
- ;;
- *)
- panic "Unrecognized casper filesystem: $1"
- ;;
- esac
+ case "$1" in
+ *.cloop)
+ echo $(setup_loop "$1" "cloop" "/sys/block/cloop*")
+ ;;
+ *.squashfs|*.ext2)
+ echo $(setup_loop "$1" "loop" "/sys/block/loop*")
+ ;;
+ *.dir)
+ echo "directory"
+ ;;
+ *)
+ panic "Unrecognized casper filesystem: $1"
+ ;;
+ esac
}
match_files_in_dir() {
- # Does any files match pattern $1 ?
+ # Does any files match pattern $1 ?
- local pattern="$1"
- if [ "$(echo $pattern)" != "$pattern" ]; then
- return 0
- fi
- return 1
+ local pattern="$1"
+ if [ "$(echo $pattern)" != "$pattern" ]; then
+ return 0
+ fi
+ return 1
}
mount_images_in_directory() {
- directory="$1"
- rootmnt="$2"
- if match_files_in_dir "$directory/casper/*.cloop"; then
- # Let's hope there's just one matching *.cloop... FIXME
- setup_devmapper $(get_backing_device "$directory/casper/*.cloop") "$rootmnt"
- elif match_files_in_dir "$directory/casper/*.squashfs" ||
- match_files_in_dir "$directory/casper/*.ext2" ||
- match_files_in_dir "$directory/casper/*.dir"; then
- setup_unionfs "$directory/casper" "$rootmnt"
- else
- :
- fi
+ directory="$1"
+ rootmnt="$2"
+ if match_files_in_dir "$directory/casper/*.cloop"; then
+ # Let's hope there's just one matching *.cloop... FIXME
+ setup_devmapper $(get_backing_device "$directory/casper/*.cloop") "$rootmnt"
+ elif match_files_in_dir "$directory/casper/*.squashfs" ||
+ match_files_in_dir "$directory/casper/*.ext2" ||
+ match_files_in_dir "$directory/casper/*.dir"; then
+ setup_unionfs "$directory/casper" "$rootmnt"
+ else
+ :
+ fi
}
sys2dev() {
- sysdev=${1#/sys}
- echo "/dev/$(udevinfo -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
+ sysdev=${1#/sys}
+ echo "/dev/$(udevinfo -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
}
setup_loop() {
- local fspath=$1
- local module=$2
- local pattern=$3
-
- modprobe -qb "$module"
- if [ -x /sbin/udevplug ]; then
- udevplug -W
- else
- udevtrigger
- fi
-
- for loopdev in $pattern; do
- if [ "$(cat $loopdev/size)" -eq 0 ]; then
- dev=$(sys2dev "${loopdev}")
- losetup "$dev" "$fspath"
- echo "$dev"
- return 0
- fi
- done
- panic "No loop devices available"
+ local fspath=$1
+ local module=$2
+ local pattern=$3
+
+ modprobe -qb "$module"
+ udevsettle
+
+ for loopdev in $pattern; do
+ if [ "$(cat $loopdev/size)" -eq 0 ]; then
+ dev=$(sys2dev "${loopdev}")
+ losetup "$dev" "$fspath"
+ echo "$dev"
+ return 0
+ fi
+ done
+ panic "No loop devices available"
}
get_fstype() {
- #FIXME# one use of this function expects "unknown" another does not!
- # which is it???
- local FSTYPE
- local FSSIZE
- eval $(fstype < $1)
- if [ "$FSTYPE" != "unknown" ]; then
- echo $FSTYPE
- return 0
- fi
- /lib/udev/vol_id -t $1 2>/dev/null
+ #FIXME# one use of this function expects "unknown" another does not!
+ # which is it???
+ local FSTYPE
+ local FSSIZE
+ eval $(fstype < $1)
+ if [ "$FSTYPE" != "unknown" ]; then
+ echo $FSTYPE
+ return 0
+ fi
+ /lib/udev/vol_id -t $1 2>/dev/null
}
setup_devmapper() {
- backdev="$1"
- rootmnt="$2"
+ backdev="$1"
+ rootmnt="$2"
- modprobe -qb dm-mod
- COW_DEVICE=/dev/ram1
- COW_NAME="casper-cow"
+ modprobe -qb dm-mod
+ COW_DEVICE=/dev/ram1
+ COW_NAME="casper-cow"
- BACKING_FILE_SIZE=$(blockdev --getsize "$backdev")
- MAX_COW_SIZE=$(blockdev --getsize "$COW_DEVICE")
- CHUNK_SIZE=8 # sectors
+ BACKING_FILE_SIZE=$(blockdev --getsize "$backdev")
+ MAX_COW_SIZE=$(blockdev --getsize "$COW_DEVICE")
+ CHUNK_SIZE=8 # sectors
- if [ -z "$COW_SIZE" -o "$COW_SIZE" -gt "$MAX_COW_SIZE" ]; then
- COW_SIZE=$MAX_COW_SIZE
- fi
+ if [ -z "$COW_SIZE" -o "$COW_SIZE" -gt "$MAX_COW_SIZE" ]; then
+ COW_SIZE=$MAX_COW_SIZE
+ fi
- echo "0 $COW_SIZE linear $COW_DEVICE 0" | dmsetup create $COW_NAME
+ echo "0 $COW_SIZE linear $COW_DEVICE 0" | dmsetup create $COW_NAME
- echo "0 $BACKING_FILE_SIZE snapshot $backdev /dev/mapper/$COW_NAME p $CHUNK_SIZE" | \
- dmsetup create casper-snapshot
- if [ "$(get_fstype $backdev)" = "unknown" ]; then
- panic "Unknown file system type on $backdev"
- fi
- mount -t $(get_fstype "$backdev") /dev/mapper/casper-snapshot $rootmnt || panic "Can not mount /dev/mapper/casper/snapshot on $rootmnt"
+ echo "0 $BACKING_FILE_SIZE snapshot $backdev /dev/mapper/$COW_NAME p $CHUNK_SIZE" | \
+ dmsetup create casper-snapshot
+ if [ "$(get_fstype $backdev)" = "unknown" ]; then
+ panic "Unknown file system type on $backdev"
+ fi
+ mount -t $(get_fstype "$backdev") /dev/mapper/casper-snapshot $rootmnt || panic "Can not mount /dev/mapper/casper/snapshot on $rootmnt"
- mkdir -p "$rootmnt/rofs"
- echo "0 $BACKING_FILE_SIZE linear $backdev 0" | dmsetup create casper-backing
- mount -t $(get_fstype "$backdev") /dev/mapper/casper-backing "$rootmnt/rofs"
+ mkdir -p "$rootmnt/rofs"
+ echo "0 $BACKING_FILE_SIZE linear $backdev 0" | dmsetup create casper-backing
+ mount -t $(get_fstype "$backdev") /dev/mapper/casper-backing "$rootmnt/rofs"
}
where_is_mounted() {
- device=$1
- if grep -q "^$device " /proc/mounts; then
- grep "^$device " /proc/mounts | read d mountpoint rest
- echo $mountpoint
- return 0
- fi
- return 1
+ device=$1
+ if grep -q "^$device " /proc/mounts; then
+ grep "^$device " /proc/mounts | read d mountpoint rest
+ echo $mountpoint
+ return 0
+ fi
+ return 1
}
copy_to_ram() {
- copyfrom="$1"
-
- if [ ! -z "${2}" ] ; then
- # This will enable future rampersistence, todo yet
- copyto="${2}"
- moveit="False"
- else
- copyto="${copyfrom}_swap"
- moveit="True"
- fi
-
- size=$(du -ks ${copyfrom} | cut -f1)
- size=$(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 ${copyfrom}/* ${copyto} # "cp -a" from busybox also copies hidden files
- umount ${copyfrom}
- if [ "${moveit}" == "True" ]; then
- mount -r -o move ${copyto} ${copyfrom}
- rmdir ${copyto}
- fi
- [ "$quiet" != "y" ] && log_end_msg
- fi
+ copyfrom="$1"
+
+ if [ ! -z "${2}" ] ; then
+ # This will enable future rampersistence, todo yet
+ copyto="${2}"
+ moveit="False"
+ else
+ copyto="${copyfrom}_swap"
+ moveit="True"
+ fi
+
+ size=$(du -ks ${copyfrom} | cut -f1)
+ size=$(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 ${copyfrom}/* ${copyto} # "cp -a" from busybox also copies hidden files
+ umount ${copyfrom}
+ if [ "${moveit}" == "True" ]; then
+ mount -r -o move ${copyto} ${copyfrom}
+ rmdir ${copyto}
+ fi
+ [ "$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 ${cow_backing}
- fi
- fi
- done
- done
+ pers_label="${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() {
- rc=1
+ rc=1
- modprobe -q af_packet # For DHCP
+ modprobe -q af_packet # For DHCP
- ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf
+ ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf
- if [ "${NFSROOT}" = "auto" ]; then
- NFSROOT=${ROOTSERVER}:${ROOTPATH}
- fi
+ if [ "${NFSROOT}" = "auto" ]; then
+ NFSROOT=${ROOTSERVER}:${ROOTPATH}
+ fi
- [ "$quiet" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
-
- if [ "${NETBOOT}" != "nfs" ] && do_cifsmount ; then
- rc=0
- elif do_nfsmount ; then
- NETBOOT=nfs
- export NETBOOT
- rc=0
- fi
+ [ "$quiet" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
+
+ if [ "${NETBOOT}" != "nfs" ] && do_cifsmount ; then
+ rc=0
+ elif do_nfsmount ; then
+ NETBOOT="nfs"
+ export NETBOOT
+ rc=0
+ fi
- [ "$quiet" != "y" ] && log_end_msg
- return ${rc}
+ [ "$quiet" != "y" ] && log_end_msg
+ return ${rc}
}
do_nfsmount() {
- rc=1
- modprobe -q nfs
- if [ -z "${NFSOPTS}" ]; then
- NFSOPTS=""
- fi
-
- [ "$quiet" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
- # FIXME: This for loop is an ugly HACK round an nfs bug
- for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
- nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
- sleep 1
- done
- return ${rc}
+ rc=1
+ modprobe -q nfs
+ if [ -z "${NFSOPTS}" ]; then
+ NFSOPTS=""
+ fi
+
+ [ "$quiet" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
+ # FIXME: This for loop is an ugly HACK round an nfs bug
+ for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
+ nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
+ sleep 1
+ done
+ return ${rc}
}
do_cifsmount() {
- rc=1
- if [ -x "/sbin/mount.cifs" ]; then
- if [ -z "${NFSOPTS}" ]; then
- CIFSOPTS="-ouser=root,password="
- else
- CIFSOPTS="${NFSOPTS}"
- fi
-
- [ "$quiet" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
- modprobe -q cifs
-
- if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}" ; then
- rc=0
- fi
- fi
- return ${rc}
+ rc=1
+ if [ -x "/sbin/mount.cifs" ]; then
+ if [ -z "${NFSOPTS}" ]; then
+ CIFSOPTS="-ouser=root,password="
+ else
+ CIFSOPTS="${NFSOPTS}"
+ fi
+
+ [ "$quiet" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
+ modprobe -q cifs
+
+ if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}" ; then
+ rc=0
+ fi
+ fi
+ return ${rc}
}
setup_unionfs() {
- image_directory="$1"
- rootmnt="$2"
-
- modprobe -qb unionfs
-
- croot="" # Should really be /casper, but run-init doesn't handle
- # mount-points in subdirectories at all
-
- # Let's just mount the read-only file systems first
- rofsstring=""
- rofslist=""
- if [ ${NETBOOT} == "nfs" ] ; then
- roopt="nfsro" # go aroung a bug in nfs-unionfs locking
- else
- roopt="ro"
- fi
-
- mkdir -p "${croot}"
- for image_type in "ext2" "squashfs" "dir" ; do
- for image in "${image_directory}"/*."${image_type}"; do
- imagename=$(basename "${image}")
- if [ -d "${image}" ]; then
- # it is a plain directory: do nothing
- rofsstring="${image}=${roopt}:${rofsstring}"
- rofslist="${image} ${rofslist}"
- elif [ -f "${image}" ]; then
- backdev=$(get_backing_device "$image")
- fstype=$(get_fstype "${backdev}")
- if [ "${fstype}" = "unknown" ]; then
- panic "Unknown file system type on ${backdev} (${image})"
- fi
- mkdir -p "${croot}/${imagename}"
- mount -t "${fstype}" -o ro "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
- fi
- done
- done
- rofsstring=${rofsstring%:}
-
- mkdir -p /cow
- cowdevice="tmpfs"
- cow_fstype="tmpfs"
-
- # Looking for "${root_persistence}" device or file
- if [ ! -z "${PERSISTENT}" ]; 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 $cowdevice on /cow"
-
- mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs mount failed"
-
- for d in ${rofslist}; do
- mkdir -p "${rootmnt}/casper/${d}"
- mount -o bind "${d}" "${rootmnt}/casper/${d}"
- case d in
- *.dir) ;; # do nothing
- *) umount "${d}" ;;
- esac
- done
-
- # Adding other custom mounts
- if [ ! -z "${PERSISTENT}" ]; 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 [ ! -z "${SHOWCOW}" ]; then
- mkdir -p "$rootmnt/cow"
- mount -o bind /cow "$rootmnt/cow"
- fi
+ image_directory="$1"
+ rootmnt="$2"
+
+ modprobe -qb unionfs
+
+ # run-init can't deal with this, but we're going to move all of these
+ # away before it runs anyway.
+ croot="/casper"
+
+ # Let's just mount the read-only file systems first
+ rofsstring=""
+ rofslist=""
+ if [ "${NETBOOT}" == "nfs" ] ; then
+ roopt="nfsro" # go aroung a bug in nfs-unionfs locking
+ else
+ roopt="ro"
+ fi
+
+ mkdir -p "${croot}"
+ for image_type in "ext2" "squashfs" "dir" ; do
+ for image in "${image_directory}"/*."${image_type}"; do
+ imagename=$(basename "${image}")
+ if [ -d "${image}" ]; then
+ # it is a plain directory: do nothing
+ rofsstring="${image}=${roopt}:${rofsstring}"
+ rofslist="${image} ${rofslist}"
+ elif [ -f "${image}" ]; then
+ backdev=$(get_backing_device "$image")
+ fstype=$(get_fstype "${backdev}")
+ if [ "${fstype}" = "unknown" ]; then
+ panic "Unknown file system type on ${backdev} (${image})"
+ fi
+ mkdir -p "${croot}/${imagename}"
+ mount -t "${fstype}" -o ro "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
+ fi
+ done
+ done
+ rofsstring=${rofsstring%:}
+
+ mkdir -p /cow
+ cowdevice="tmpfs"
+ cow_fstype="tmpfs"
+
+ # Looking for "${root_persistence}" device or file
+ if [ ! -z "${PERSISTENT}" ]; 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 $cowdevice on /cow"
+
+ mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs mount failed"
+
+ for d in ${rofslist}; do
+ mkdir -p "${rootmnt}/casper/${d##*/}"
+ case d in
+ *.dir) mount -o bind "${d}" "${rootmnt}/casper/${d##*/}" ;;
+ *) mount -o move "${d}" "${rootmnt}/casper/${d##*/}" ;;
+ esac
+ done
+
+ # Adding other custom mounts
+ if [ ! -z "${PERSISTENT}" ]; 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 [ ! -z "${SHOWCOW}" ]; then
+ mkdir -p "$rootmnt/cow"
+ mount -o bind /cow "$rootmnt/cow"
+ fi
}
is_usb_device() {
}
find_livefs() {
- mounted=
- for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram); do
- devname=$(sys2dev "${sysblock}")
- fstype=$(get_fstype "${devname}")
- if /lib/udev/cdrom_id ${devname} > /dev/null; then
- mount -t ${fstype} -o ro "$devname" $mountpoint || continue
- if is_casper_path $mountpoint; then
- echo $mountpoint
- return
- else
- umount $mountpoint
- fi
- elif is_usb_device "$sysblock"; then
- for dev in $(subdevices "${sysblock}"); do
- devname=$(sys2dev "${dev}")
- fstype=$(get_fstype "${devname}")
- case ${fstype} in
- vfat|iso9660|udf)
- mount -t ${fstype} -o ro "${devname}" $mountpoint || continue
- if is_casper_path $mountpoint; then
- echo $mountpoint
- return
- else
- umount $mountpoint
- fi
- ;;
- esac
- done
- elif [ "${fstype}" = "squashfs" || \
- "${fstype}" = "ext2" ]; then
-
- # This is an ugly hack situation, the block device has
- # an image directly on it. It's hopefully
- # casper, so take it and run with it.
-
- ln -s "${devname}" "${devname}.${fstype}"
- echo "${devname}.${fstype}"
- return
- fi
- done
+ mounted=
+ for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram); do
+ devname=$(sys2dev "${sysblock}")
+ fstype=$(get_fstype "${devname}")
+ if /lib/udev/cdrom_id ${devname} > /dev/null; then
+ mount -t ${fstype} -o ro "$devname" $mountpoint || continue
+ if is_casper_path $mountpoint; then
+ echo $mountpoint
+ return
+ else
+ umount $mountpoint
+ fi
+ elif is_usb_device "$sysblock"; then
+ for dev in $(subdevices "${sysblock}"); do
+ devname=$(sys2dev "${dev}")
+ fstype=$(get_fstype "${devname}")
+ case ${fstype} in
+ vfat|iso9660|udf)
+ mount -t ${fstype} -o ro "${devname}" $mountpoint || continue
+ if is_casper_path $mountpoint; then
+ echo $mountpoint
+ return
+ else
+ umount $mountpoint
+ fi
+ ;;
+ esac
+ done
+ elif [ "${fstype}" = "squashfs" || \
+ "${fstype}" = "ext2" ]; then
+
+ # This is an ugly hack situation, the block device has
+ # an image directly on it. It's hopefully
+ # casper, so take it and run with it.
+
+ ln -s "${devname}" "${devname}.${fstype}"
+ echo "${devname}.${fstype}"
+ return
+ fi
+ done
}
set_usplash_timeout() {
- if [ -x /sbin/usplash_write ]; then
- /sbin/usplash_write "TIMEOUT 120"
- fi
+ if [ -x /sbin/usplash_write ]; then
+ /sbin/usplash_write "TIMEOUT 120"
+ fi
}
mountroot() {
- exec 6>&1
- exec 7>&2
- exec > casper.log
- exec 2>&1
-
- set_usplash_timeout
- [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-premount"
- run_scripts /scripts/casper-premount
- [ "$quiet" != "y" ] && log_end_msg
-
- # Needed here too because some things (*cough* udev *cough*)
- # changes the timeout
-
- set_usplash_timeout
-
- if [ ! -z "${NETBOOT}" ]; then
- if do_netmount ; then
- livefs_root="${mountpoint}"
- else
- panic "Unable to find a the network rootfs live file system"
- fi
- else
- # Scan local devices for the image
- for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
- livefs_root=$(find_livefs)
- if [ "${livefs_root}" ]; then
- break
- fi
- done
-
- if [ "$?" -gt 0 ]; then
- panic "Unable to find a medium containing a live file system"
- fi
-
- if [ ! -z "${TORAM}" ]; then
- copy_to_ram "${livefs_root}"
- fi
- fi
- sleep 1
-
- mount_images_in_directory "$livefs_root" "$rootmnt"
-
- log_end_msg
-
- maybe_break casper-bottom
- [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-bottom"
-
- run_scripts /scripts/casper-bottom
- [ "$quiet" != "y" ] && log_end_msg
-
- exec 1>&6 6>&-
- exec 2>&7 7>&-
- cp casper.log "${rootmnt}/var/log/"
+ exec 6>&1
+ exec 7>&2
+ exec > casper.log
+ exec 2>&1
+
+ set_usplash_timeout
+ [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-premount"
+ run_scripts /scripts/casper-premount
+ [ "$quiet" != "y" ] && log_end_msg
+
+ # Needed here too because some things (*cough* udev *cough*)
+ # changes the timeout
+
+ set_usplash_timeout
+
+ if [ ! -z "${NETBOOT}" ]; then
+ if do_netmount ; then
+ livefs_root="${mountpoint}"
+ else
+ panic "Unable to find a the network rootfs live file system"
+ fi
+ else
+ # Scan local devices for the image
+ for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
+ livefs_root=$(find_livefs)
+ if [ "${livefs_root}" ]; then
+ break
+ fi
+ done
+
+ if [ "$?" -gt 0 ]; then
+ panic "Unable to find a medium containing a live file system"
+ fi
+
+ if [ ! -z "${TORAM}" ]; then
+ copy_to_ram "${livefs_root}"
+ fi
+ fi
+ sleep 1
+
+ mount_images_in_directory "$livefs_root" "$rootmnt"
+
+ log_end_msg
+
+ maybe_break casper-bottom
+ [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-bottom"
+
+ run_scripts /scripts/casper-bottom
+ [ "$quiet" != "y" ] && log_end_msg
+
+ exec 1>&6 6>&-
+ exec 2>&7 7>&-
+ cp casper.log "${rootmnt}/var/log/"
}
projects / live-boot-grml.git / commitdiff