2 files changed, 41 insertions, 0 deletions
diff --git a/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts.bb b/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts.bb
new file mode 100644
index 000000000..30e0f3613
--- /dev/null
+++ b/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts.bb
@@ -0,0 +1,22 @@
+inherit obmc-phosphor-license
+inherit allarch
+inherit update-alternatives
+
+RDEPENDS_${PN} += "${VIRTUAL-RUNTIME_base-utils}"
+
+SRC_URI += "file://init"
+
+FILES_${PN} += "${base_sbindir}/init"
+
+do_install() {
+	install -d ${D}/${base_sbindir}
+	install -m 0755 ${WORKDIR}/init ${D}/${base_sbindir}/preinit-mounts
+}
+
+ALTERNATIVE_${PN} = "init"
+ALTERNATIVE_TARGET[init] = "${base_sbindir}/preinit-mounts"
+ALTERNATIVE_LINK_NAME[init] = "${base_sbindir}/init"
+
+# Use a number higher than the systemd init alternative so that
+# ours is enabled instead.
+ALTERNATIVE_PRIORITY[init] ?= "400"
diff --git a/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts/init b/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts/init
new file mode 100644
index 000000000..91f8038f9
--- /dev/null
+++ b/meta-phosphor/recipes-phosphor/preinit-mounts/preinit-mounts/init
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+if ! mount ubi0:rwfs /var -t ubifs -o defaults; then
+  if ! mount ubi0:rwfs /var -t ubifs -o defaults,ro; then
+    mount tmpfs /var -t tmpfs -o defaults
+  fi
+fi
+
+mkdir -p /var/persist/etc /var/persist/etc-work /var/persist/home/root
+
+rm -rf /var/persist/etc-work/*
+# rm -rf specifically skips . and .. directories; pipe all output to null to avoid the error message
+rm -rf /var/persist/etc-work/.* > /dev/null 2>&1
+
+if ! mount overlay /etc -t overlay -o defaults,lowerdir=/etc,upperdir=/var/persist/etc,workdir=/var/persist/etc-work; then
+  mount overlay /etc -t overlay -o defaults,lowerdir=/etc:/var/persist/etc
+fi
+
+exec /lib/systemd/systemd