1 files changed, 35 insertions, 0 deletions
diff --git a/modules.d/busybox/hooks/s3-install-busybox-stage4.sh b/modules.d/busybox/hooks/s3-install-busybox-stage4.sh
new file mode 100755
index 00000000..f5c0aae9
--- /dev/null
+++ b/modules.d/busybox/hooks/s3-install-busybox-stage4.sh
@@ -0,0 +1,35 @@
+#!/bin/ash
+
+# copy busybox to NEWROOT unless one exists at the expected path.
+bb_target_path="/opt/openslx/bin/busybox"
+bb_source_path="$( type -p busybox )"
+[ -x "$bb_source_path" ] || bb_source_path="$( command -v busybox )"
+
+if ! [ -x "$bb_source_path" ]; then
+	echo "Busybox binary not found in initrd!?"
+	exit 1
+fi
+
+if [ -x "${NEWROOT}${bb_target_path}" ]; then
+	echo "Not installing busybox in stage 4 - already exists"
+	exit 1
+fi
+
+mkdir -p -- "${NEWROOT}/opt/openslx/bin" "${NEWROOT}/opt/openslx/sbin"
+cp -f -- "$bb_source_path" "${NEWROOT}${bb_target_path}"
+# --list-full gives {s,}bin prefixes
+for app in $( busybox --list-full ); do
+	# No -f, so we skip any tools that might already exist
+	ln -ns -- "$bb_target_path" "${NEWROOT}/opt/openslx/$app"
+done
+# compat: /bin/ash if not exists
+# also accept dead symlinks as it might be relative and just look dead
+# to us from outside NEWROOT
+if ! [ -e "${NEWROOT}/bin/ash" ] && ! [ -L "${NEWROOT}/bin/ash" ]; then
+	ln -nsf -- "$bb_target_path" "${NEWROOT}/bin/ash"
+else
+	# either valid symlink or binary, log it and ignore.
+	echo "'/bin/ash' is a symlink or binary, leaving it alone."
+fi
+
+exit 0