also unshare ipc and utc on boot

[rrq/overlay-boot.git] / overlay-boot

diff --git a/overlay-boot b/overlay-boot
index 5e6bef92a9b7451627b5d257ce14ade89a66381b..e94620ec70746b22f14fc61373811b9ef39e8090 100755 (executable)
--- a/overlay-boot
+++ b/overlay-boot
@@ -4,10 +4,10 @@
 # is an overlay of the subhost's root and an OS root. The service
 # subhost is defined by a configuration file named on teh command line
 
-OVERLAYDIR="$(realpath $(dirname $0))"
+OVERLAYDIR="$(dirname $(realpath $0))"
 
 [ $(id -u) = 0 ] || exec sudo $0 $@
-. $(dirname $(realpath $0))/functions $*
+. $OVERLAYDIR/functions $*
 
 CONFIG="$1"
 [ -r "$CONFIG" ] || die "Missing configuration $CONFIG"
@@ -44,10 +44,11 @@ config CABLES ""
 config START "networking ssh"
 config SUBSHELL /bin/sh
 
-# Setup virtual cabling and subhost's /etc/network/interfaces
+# Setup virtual cabling
 setup_veth_cables $NAME $CABLES
 
 # Set up the mount for this subhost, including a new tmpfs on its /run
+# and a default $UPPER/etc/network/interfaces if needed
 echo setup_overlay "$NAME" "$LIVE" "$LOWER" "$UPPER" "$WORK"
 setup_overlay "$NAME" "$LIVE" "$LOWER" "$UPPER" "$WORK"
 
@@ -59,7 +60,7 @@ exithandler() {
 }
 trap "exithandler" 0
 
-CMD="unshare -fp --mount-proc ip netns exec $NAME chroot $LIVE /bin/sh"
+CMD="unshare -fp --mount-proc -i -u ip netns exec $NAME chroot $LIVE /bin/sh"
 echo "$CMD"
 
 config RAM_SIZE 50M