[scripts,remaster] implement "Check disc for defects" boot option

scripts/cdupdate.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+CDROOT=/mnt/cdrom
+
+CHECK_DISC=$(cat /proc/cmdline | grep checkdisc)
+if [ -n "${CHECK_DISC}" ]; then
+	echo "Checking Live System Image for defects..."
+	cd "${CDROOT}" || exit 1
+	all_fine=1
+	for shafile in $(find "${CDROOT}" -name "*.sha256"); do
+		target_file="${shafile/.sha256}"
+		echo -en "Checking ${target_file} ... "
+		target_sha=$(sha256sum "${target_file}" 2> /dev/null | cut -d" " -f 1)
+		shafile_sha=$(cat "${shafile}" | cut -d" " -f 1)
+		if [ "${target_sha}" != "${shafile_sha}" ]; then
+			echo
+			echo "target = ${target_sha}"
+			echo "expect = ${shafile_sha}"
+			echo
+			echo "ATTENTION ATTENTION ATTENTION"
+			echo "This Live System won't properly work"
+			echo "Your DVD, USB stick or ISO image is damaged"
+			echo "ATTENTION ATTENTION ATTENTION"
+			all_fine=0
+			break
+		else
+			echo "OK"
+		fi
+	done
+	echo
+	if [ "${all_fine}" = "1" ]; then
+		echo "All fine baby, the Live System is healthy"
+	else
+		echo "Ouch... I am very sorry!"
+	fi
+	echo "Press Enter key (yeah, that one) to reboot"
+	read
+	reboot -f
+fi

scripts/pre_iso_script_livecd_hash.sh

@@ -2,14 +2,39 @@
 
 LIVECD_SQUASHFS="${CDROOT_DIR}/livecd.squashfs"
 
+# Path to molecules.git dir
+SABAYON_MOLECULE_HOME="${SABAYON_MOLECULE_HOME:-/sabayon}"
+export SABAYON_MOLECULE_HOME
+
+echo
+echo "Generating sha256sums..."
+echo
+
+# create sha256 file for livecd.squashfs
 if [ -f "${LIVECD_SQUASHFS}" ]; then
-	echo
-	echo "Generating SHA256 of ${LIVECD_SQUASHFS}..."
-	echo
-	(
-		squash_dir=$(dirname "${LIVECD_SQUASHFS}")
-		squash_name=$(basename "${LIVECD_SQUASHFS}")
-		cd "${squash_dir}" && \
-			sha256sum "${squash_name}" > "${squash_name}.sha256"
-	)
+	echo "Doing ${LIVECD_SQUASHFS}..."
+	squash_dir=$(dirname "${LIVECD_SQUASHFS}")
+	squash_name=$(basename "${LIVECD_SQUASHFS}")
+	pushd "${squash_dir}" > /dev/null && \
+		sha256sum "${squash_name}" > "${squash_name}.sha256" && \
+		popd > /dev/null
 fi
+
+# files inside /boot now
+if [ -d "${CDROOT_DIR}/boot" ]; then
+	for bootfile in "${CDROOT_DIR}"/boot/* ; do
+		if [ -f "${bootfile}" ]; then
+			echo "Doing ${bootfile}..."
+			boot_dir=$(dirname "${bootfile}")
+			boot_name=$(basename "${bootfile}")
+			pushd "${boot_dir}" > /dev/null && \
+				sha256sum "${boot_name}" > "${boot_name}.sha256" && \
+				popd > /dev/null
+		fi
+	done
+fi
+
+# move cdupdate.sh in place
+cp "${SABAYON_MOLECULE_HOME}/scripts/cdupdate.sh" "${CDROOT_DIR}/cdupdate.sh" && \
+	chmod +x "${CDROOT_DIR}/cdupdate.sh" && \
+	chown root:root "${CDROOT_DIR}/cdupdate.sh"