sanity check before overlay

diff --git a/functions b/functions
index 8c1b45c048706c91a2923f451c5065040c0224f6..ab20d20ace23d5c7f3e265f4cf7d1d469479dd7b 100644 (file)
--- 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