From 4e9275398278c4cab8ba68f3d9ca54ab97b73922 Mon Sep 17 00:00:00 2001
From: Serge Schneider <serge@raspberrypi.com>
Date: Wed, 29 Mar 2023 07:55:37 +0100
Subject: [PATCH] Use tmpfs for chroot /run and /tmp

---
 scripts/common | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scripts/common b/scripts/common
index 82bd726..5731b72 100644
--- a/scripts/common
+++ b/scripts/common
@@ -86,6 +86,14 @@ on_chroot() {
 		mount --bind /sys "${ROOTFS_DIR}/sys"
 	fi
 
+	if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/run)"; then
+		mount -t tmpfs  tmpfs "${ROOTFS_DIR}/run"
+	fi
+
+	if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/tmp)"; then
+		mount -t tmpfs  tmpfs "${ROOTFS_DIR}/tmp"
+	fi
+
 	setarch linux32 capsh $CAPSH_ARG "--chroot=${ROOTFS_DIR}/" -- -e "$@"
 }
 export -f on_chroot