From 3d3d3fe12d00953ee04663d52afa5a693d9f9558 Mon Sep 17 00:00:00 2001
From: Johannes 'josch' Schauer <josch@mister-muffin.de>
Date: Sun, 15 Sep 2019 14:12:49 +0200
Subject: [PATCH] Do not copy /etc/resolv.conf or /etc/hostname if the host
 system doesn't have them

---
 mmdebstrap | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/mmdebstrap b/mmdebstrap
index 2d9a7dd..fa952f2 100755
--- a/mmdebstrap
+++ b/mmdebstrap
@@ -1103,8 +1103,16 @@ sub setup {
     }
 
     # allow network access from within
-    copy("/etc/resolv.conf", "$options->{root}/etc/resolv.conf") or error "cannot copy /etc/resolv.conf: $!";
-    copy("/etc/hostname", "$options->{root}/etc/hostname") or error "cannot copy /etc/hostname: $!";
+    if (-e "/etc/resolv.conf") {
+	copy("/etc/resolv.conf", "$options->{root}/etc/resolv.conf") or error "cannot copy /etc/resolv.conf: $!";
+    } else {
+	warning("Host system does not have a /etc/resolv.conf to copy into the rootfs.")
+    }
+    if (-e "/etc/hostname") {
+	copy("/etc/hostname", "$options->{root}/etc/hostname") or error "cannot copy /etc/hostname: $!";
+    } else {
+	warning("Host system does not have a /etc/hostname to copy into the rootfs.")
+    }
 
     if ($options->{havemknod}) {
 	foreach my $file (@devfiles) {