1 files changed, 104 insertions, 0 deletions
diff --git a/components/9990-toram-todisk.sh b/components/9990-toram-todisk.sh
new file mode 100755
index 0000000..e7938e0
--- /dev/null
+++ b/components/9990-toram-todisk.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+
+#set -e
+
+copy_live_to ()
+{
+	copyfrom="${1}"
+	copytodev="${2}"
+	copyto="${copyfrom}_swap"
+
+	if [ -z "${MODULETORAM}" ]
+	then
+		size=$(fs_size "" ${copyfrom}/ "used")
+	else
+		MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
+
+		if [ -f "${MODULETORAMFILE}" ]
+		then
+			size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
+		else
+			log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
+			return 1
+		fi
+	fi
+
+	if [ "${copytodev}" = "ram" ]
+	then
+		# copying to ram:
+		freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
+		mount_options="-o size=${size}k"
+		free_string="memory"
+		fstype="tmpfs"
+		dev="/dev/shm"
+	else
+		# it should be a writable block device
+		if [ -b "${copytodev}" ]
+		then
+			dev="${copytodev}"
+			free_string="space"
+			fstype=$(get_fstype "${dev}")
+			freespace=$(fs_size "${dev}")
+		else
+			log_warning_msg "${copytodev} is not a block device."
+			return 1
+		fi
+	fi
+
+	if [ "${freespace}" -lt "${size}" ]
+	then
+		log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
+		return 1
+	fi
+
+	# Custom ramdisk size
+	if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
+	then
+		# FIXME: should check for wrong values
+		mount_options="-o size=${ramdisk_size}"
+	fi
+
+	# begin copying (or uncompressing)
+	mkdir "${copyto}"
+	log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
+	mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
+
+	if [ "${extension}" = "tgz" ]
+	then
+		cd "${copyto}"
+		tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
+		rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
+		mount -r -o move "${copyto}" "${rootmnt}"
+		cd "${OLDPWD}"
+	else
+		if [ -n "${MODULETORAMFILE}" ]
+		then
+			if [ -x /bin/rsync ]
+			then
+				echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
+				rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
+			else
+				cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
+			fi
+		else
+			if [ -x /bin/rsync ]
+			then
+				echo " * Copying whole medium to RAM" 1>/dev/console
+				rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
+			else
+				mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
+				cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
+				if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
+				then
+					cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
+				fi
+			fi
+		fi
+
+		umount ${copyfrom}
+		mount -r -o move ${copyto} ${copyfrom}
+	fi
+
+	rmdir ${copyto}
+	return 0
+}