mountpoint=/live_media
# Will be mounted if found as copy on write instead of tmpfs
-persistence_pattern="casper-rw"
+root_persistence="casper-rw"
-# Each file found with this pattern will be mounted directly in the
-# mountpoint extracted from file name "${other_mounts_pattern}<mountpoint>"
-other_mounts_pattern="casper-mount-"
-netboot=""
+# TODO
+## Each file found with this pattern will be mounted directly in the
+## mountpoint extracted from file name "${other_mounts_pattern}<mountpoint>"
+#other_mounts_pattern="casper-mount-"
+home_persistence="home-rw"
#overlay_method=unionfs
#if [ "${DPKG_ARCH}" = "ia64" ] || [ "${DPKG_ARCH}" = "hppa" ] || [ "${DPKG_ARCH}" = "sparc" ]; then
export USERNAME USERFULLNAME HOST
+# 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
+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
+fi
+
is_casper_path() {
path=$1
if [ -d "$path/casper" ]; then
match_files_in_dir "$directory/casper/*.dir"; then
setup_unionfs "$directory/casper" "$rootmnt"
else
- :
+ :
fi
}
}
copy_to_ram() {
- copyform="$1"
- copyto="${copyform}_swap"
+ copyfrom="$1"
- size=$(du -ks ${copyform} | cut -f1)
+ if [ ! -z "${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 $2}' - ))
[ "$quiet" != "y" ] && log_begin_msg "Copying live media to ram..."
mkdir "${copyto}"
mount -t tmpfs -o size=${size}k /dev/shm ${copyto}
- cp -a ${copyform}/* ${copyto}
- umount ${copyform}
- mount -r -o move ${copyto} ${copyform}
- rmdir ${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
}
}
do_netmount() {
- # Will mount a remote share and return the mountpoint
+ rc=1
- modprobe -q nfs
- # For DHCP
- modprobe -q af_packet
+ modprobe -q af_packet # For DHCP
ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf
- if [ "x${NFSROOT}" = "xauto" ]; then
+
+ if [ "${NFSROOT}" = "auto" ]; then
NFSROOT=${ROOTSERVER}:${ROOTPATH}
fi
- #choose NFS or CIFS mount
- if [ ${netboot} = "NFS" ] ; then
- echo $(do_nfsmount)
- else
- echo $(do_cifsmount)
+ [ "$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 ${rc}
}
do_nfsmount() {
- if [ "x${NFSOPTS}" = "x" ]; then
+ rc=1
+ modprobe -q nfs
+ if [ -z "${NFSOPTS}" ]; then
NFSOPTS=""
fi
- [ "$quiet" != "y" ] && log_begin_msg "Mounting NFS with nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
- while true ; do
- nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && break
+ [ "$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}" "${mountpoint}" && rc=0 && break
sleep 1
done
- echo "${mountpoint}"
- # FIXME: add error check
- [ "$quiet" != "y" ] && log_end_msg
+ return ${rc}
}
do_cifsmount() {
- NFSOPTS="-ouser=root,password="
+ rc=1
+ if [ -x "/sbin/mount.cifs" ]; then
+ if [ -z "${NFSOPTS}" ]; then
+ CIFSOPTS="-ouser=root,password="
+ else
+ CIFSOPTS="${NFSOPTS}"
+ fi
- [ "$quiet" != "y" ] && log_begin_msg "Mounting using mount.cifs with ${NFSROOT} ${mountpoint} ${NFSOPTS}"
- mount.cifs "${NFSROOT}" "${mountpoint}" "${NFSOPTS}" && echo "${mountpoint}"
- # FIXME: add error check
- [ "$quiet" != "y" ] && log_end_msg
+ [ "$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"
- image_type="$3"
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} ${rofslist}"
- rofsstring="${image}=ro:${rofsstring}"
elif [ -f "${image}" ]; then
backdev=$(get_backing_device "$image")
fstype=$(get_fstype "${backdev}")
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}=ro:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
+ mount -t "${fstype}" -o ro "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
fi
done
done
cow_fstype="tmpfs"
# Looking for "${root_persistence}" device or file
- if grep -q persistent /proc/cmdline; then
+ if [ ! -z "${PERSISTENT}" ]; then
cowprobe=$(find_cow_device "${root_persistence}")
if [ -b "${cowprobe}" ]; then
cowdevice=${cowprobe}
mount ${cowdevice} -t ${cow_fstype} -o rw /cow || panic "Can not mount $cowdevice on /cow"
- mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt"
+ mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs mount failed"
for d in ${rofslist}; do
mkdir -p "${rootmnt}/casper/${d}"
- mount -o bind "${d}" "${rootmnt}/${d}"
- case d in
+ mount -o bind "${d}" "${rootmnt}/casper/${d}"
+ case d in
*.dir) ;; # do nothing
*) umount "${d}" ;;
esac
done
# Adding other custom mounts
- if grep -q homepersistence /proc/cmdline; then
+ if [ ! -z "${PERSISTENT}" ]; then
homecow=$(find_cow_device "${home_persistence}" )
if [ -b "${homecow}" ]; then
mount ${homecow} -t $(get_fstype "${homecow}") -o rw "${rootmnt}/home"
fi
fi
- if grep -q show-cow /proc/cmdline; then
+ if [ ! -z "${SHOWCOW}" ]; then
mkdir -p "$rootmnt/cow"
mount -o bind /cow "$rootmnt/cow"
fi
set_usplash_timeout
- if grep -q netboot /proc/cmdline; then
- netboot="CIFS"
- for x in $(cat /proc/cmdline); do
- case $x in
- netboot=*)
- netboot=${x#netboot=}
- ;;
- esac
- done
- livefs_root=$(do_netboot)
+ if [ ! -z "${NETBOOT}" ]; then
+ if do_netmount ; then
+ livefs_root="${mountpoint}"
+ else
+ panic "Unable to find a the network rootfs live file system"
+ fi
else
- # Scan devices for the image
+ # Scan local devices for the image
for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
livefs_root=$(find_livefs)
if [ "${livefs_root}" ]; then
break
fi
- sleep 1
done
+
+ if [ "$?" -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
-
- if [ "$?" -gt 0 ]; then
- panic "Unable to find a medium containing a live file system"
- fi
-
- if grep -q toram /proc/cmdline; then
- copy_to_ram "${livefs_root}"
- fi
-
+ sleep 1
+
mount_images_in_directory "$livefs_root" "$rootmnt"
log_end_msg
projects / live-boot-grml.git / blobdiff