all environment CONFIG and use /sbin/init

diff --git a/pretend-boot b/pretend-boot
index 1eaf034c0a440549443ddc9ab115b72b830b7202..746f99aad77c7381c8d8fb24a320634eea79fa89 100755 (executable)
--- a/pretend-boot
+++ b/pretend-boot
@@ -1,9 +1,8 @@
 #!/bin/bash
 #
 # Boot up subhost as if a vitual machine.
+# Allow CONFIG given as environment
 #
-# There is already an existing network namespace of the right name,
-# and there are one or more disks at /opt/subhost/$NAME/disk$i
 
 #set -x
 
@@ -11,11 +10,16 @@
 : ${NSNAME=$NAME}
 : ${SUBHOST=/opt/subhost/$NAME}
 : ${TARGET=$SUBHOST/live}
-: ${INITRD=$SUBHOST/initrd.gz}
 : ${CONFIG=$SUBHOST/config}
 
+# sets DISKS=( ... ) and BRIDGES=( ... )
 [ -r "$CONFIG" ] && . $CONFIG
 
+if [ -z "$DISKS" ] ; then
+    echo "Missing CONFIG" >&2
+    exit 1
+fi
+
 # Generate a mac address for given arguments pass through 40-bit b2sum
 # and with 02: prefix.
 macaddr() {
@@ -87,17 +91,17 @@ setup_console() {
     ln -s $(tty) $CONSOLE
 }
 
+####################
+# Pretend boot
+
 setup_cables
 setup_rootfs
-setup_console || exit 1
-
-# Install the current subhost-init startup script
-cp -p $(realpath $(dirname $0))/subhost-init startup $TARGET/
+setup_console
 
 ######################################################################
-# Run the subhost
+# Run the subhost init
 ip netns exec $NSNAME unshare --fork --pid --mount-proc --kill-child \
-     --uts --ipc --mount --cgroup chroot $TARGET /startup
+     --uts --ipc --mount --cgroup chroot $TARGET /sbin/init
 ######################################################################
 
 # Cleanup on exit