mv

sh/alias/overlay.sh

@@ -1,156 +0,0 @@
-# overlay functions to manipulate squashfs manually
-
-#= obm
-rwx_overlay_bind_mount() {
-	local directory
-	for directory in "dev" "dev/pts" "proc" "sys"; do
-		if ! mount --bind "/${directory}" "overlay/mount/${directory}"; then
-			rwx_log_error "Unable to bind mount directory: ${directory}"
-			return 1
-		fi
-	done
-}
-
-#= obu
-rwx_overlay_bind_unmount() {
-	local directory
-	for directory in "sys" "proc" "dev/pts" "dev"; do
-		if ! umount --lazy "overlay/mount/${directory}"; then
-			rwx_log_error "Unable to bind unmount directory: ${directory}"
-			return 1
-		fi
-	done
-}
-
-#= ocr
-rwx_overlay_command_root() {
-	chroot \
-		"overlay/mount" "${@}"
-}
-
-#= ocu
-rwx_overlay_command_user() {
-	chroot \
-		--userspec "1000:1000" \
-		"overlay/mount" "${@}"
-}
-
-#= omm
-rwx_overlay_mirror_mount() {
-	mount \
-		--make-rslave \
-		--rbind "/deb" "overlay/mount/deb"
-}
-
-#= omu
-rwx_overlay_mirror_unmount() {
-	umount \
-		--recursive \
-		"overlay/mount/deb"
-}
-
-#= orm
-#| mount
-rwx_overlay_root_mount() {
-	local root="${1}"
-	if [ -z "${root}" ]; then
-		rwx_log_error "No root target directory"
-		return 1
-	fi
-	root="$(realpath "${root}")"
-	if ! mkdir "overlay"; then
-		rwx_log_error "Unable to make overlay directory"
-		return 2
-	fi
-	(
-		if ! cd "overlay"; then
-			rwx_log_error "Unable to move into overlay directory"
-			return 3
-		fi
-		local directory
-		for directory in "lower" "upper" "work" "mount"; do
-			if ! mkdir --parents "${directory}"; then
-				rwx_log_error "Unable to make directory: ${directory}"
-				return 4
-			fi
-		done
-		local file="${root}/filesystem.squashfs"
-		if ! mount "${file}" "lower"; then
-			rwx_log_error "Unable to lower mount: ${file}"
-			return 5
-		fi
-		if ! mount \
-			-o "lowerdir=lower,upperdir=upper,workdir=work" \
-			-t "overlay" \
-			"overlay" "mount"; then
-			rwx_log_error "Unable to overlay mount"
-			return 6
-		fi
-	)
-}
-
-#= ors
-#| mkdir
-#| cp
-#| mksquashfs
-#| chown
-rwx_overlay_root_squash() {
-	local directory="${1}"
-	local file
-	local level="${2}"
-	if [ -n "${directory}" ]; then
-		if mkdir "${directory}"; then
-			[ -n "${level}" ] || level="18"
-			for file in "vmlinuz" "initrd.img"; do
-				cp "overlay/mount/${file}" "${directory}"
-			done
-			mksquashfs \
-				"overlay/mount" "${directory}/filesystem.squashfs" \
-				-noappend \
-				-comp "zstd" -Xcompression-level "${level}"
-			chown --recursive 1000:1000 "${directory}"
-		fi
-	fi
-}
-
-#= oru
-#| umount
-#| rmdir
-#| rm
-#| umount
-#| rmdir
-rwx_overlay_root_unmount() {
-	(
-		if ! cd "overlay"; then
-			rwx_log_error "Unable to move into overlay directory"
-			return 1
-		fi
-		if ! umount "mount"; then
-			rwx_log_error "Unable to unmount mount directory"
-			return 2
-		fi
-		if ! rmdir "mount"; then
-			rwx_log_error "Unable to remove mount directory"
-			return 3
-		fi
-		local directory
-		for directory in "upper" "work"; do
-			if ! rm --force --recursive "${directory}"; then
-				rwx_log_error "Unable to remove directory: ${directory}"
-				return 4
-			fi
-		done
-		if ! umount "lower"; then
-			rwx_log_error "Unable to unmount lower directory"
-			return 5
-		fi
-		if ! rmdir "lower"; then
-			rwx_log_error "Unable to remove lower directory"
-			return 6
-		fi
-	)
-	if ! rmdir "overlay"; then
-		rwx_log_error "Unable to remove overlay directory"
-		return 7
-	fi
-}