From: Paul Hänsch <paul@plutz.net>
Date: Sat, 24 Aug 2019 19:01:21 +0000 (+0200)
Subject: avoid regenerating existing ssh key
X-Git-Url: http://git.plutz.net/?p=blast;a=commitdiff_plain;h=211b579d6c234d78b0d30bd259d1e344d651529c

avoid regenerating existing ssh key
---

diff --git a/modules/default.mk b/modules/default.mk
index a0e88a2..6b1f08e 100644
--- a/modules/default.mk
+++ b/modules/default.mk
@@ -83,7 +83,7 @@ _rootpass: ${CFGROOT}
 	chroot "$${CFGROOT}" usermod -p "$$(openssl passwd "$${rootpass}")" root
 
 ${rootkey}.pub:
-	ssh-keygen -N '' -f "$${rootkey}"
+	[ -f "$@" ] || ssh-keygen -N '' -f "$${rootkey}"
 
 _rootkey: ${CFGROOT} ${rootkey}.pub
 	mkdir -m 700 "$${CFGROOT}/root/.ssh/"