From: Ralph Ronnquist <ralph.ronnquist@gmail.com>
Date: Sat, 26 Mar 2022 12:20:21 +0000 (+1100)
Subject: sanity check before overlay
X-Git-Tag: deb_0.1~4
X-Git-Url: https://git.rrq.au/?a=commitdiff_plain;h=ef6c97b7a2af91b303b78dbe606b77cf76588a0b;p=rrq%2Foverlay-boot.git

sanity check before overlay
---

diff --git a/functions b/functions
index 8c1b45c..ab20d20 100644
--- a/functions
+++ b/functions
@@ -89,13 +89,14 @@ setup_overlay() {
     # LIVE is the same as LOWER then skip the overlay; just assume
     # a proper chroot system exists at LIVE.
     if [ "$LIVE" != "$LOWER" ] ; then
-	# setup $UPPER/run
-	mkdir -p "$UPPER/run"
-	mount -t tmpfs -osize=100M tmpfs "$UPPER/run"
-	mkdir -p "$UPPER/run/lock"
+	# sanity check
+	[ -d "$WORK" ] || die "WORK=$WORK is not a directory"
+	[ -d "$UPPER" ] || die "UPPER=$UPPER is not a directory"
+	[ -d "$LOWER" ] || die "LOWER=LOWPER is not a directory"
+	[ -d "$LIVE" ] || die "LOWER=LOWPER is not a directory"
 	# setup $UPPER/dev
 	mkdir -p "$UPPER/dev"
-	mount -t tmpfs -osize=100M tmpfs "$UPPER/dev"
+	mount -t tmpfs -osize=50M tmpfs "$UPPER/dev"
 	mknod -m 622 "$UPPER/dev/console" c 5 1
 	mknod -m 666 "$UPPER/dev/null" c 1 3
 	mknod -m 666 "$UPPER/dev/zero" c 1 5