Break at switch_root only for bare rd.break

Previously, any rd.break=breakpoint would cause a break at the
given breakpoint and also at switch_root.

diff --git a/modules.d/99base/init.sh b/modules.d/99base/init.sh
index 2364f4fccd9eca9fc55b75cc8b37d18d9780075a..a1232eb5a40d721c814b70786290abd62365dcc3 100755 (executable)
--- a/modules.d/99base/init.sh
+++ b/modules.d/99base/init.sh
@@ -353,7 +353,9 @@ wait_for_loginit
 # remove helper symlink
 [ -h /dev/root ] && rm -f -- /dev/root
 
-getarg rd.break -d rdbreak && emergency_shell -n switch_root "Break before switch_root"
+bv=$(getarg rd.break -d rdbreak) && [ -z "$bv" ] &&
+    emergency_shell -n switch_root "Break before switch_root"
+unset bv
 info "Switching root"