From 20b7b0b73b2ae64e3f525acb50dca1e5a4f5dce7 Mon Sep 17 00:00:00 2001
From: Joachim Nilsson <troglobit@gmail.com>
Date: Sun, 12 Apr 2020 12:55:48 +0200
Subject: [PATCH] qemu: Skip QEMU_MNT and QEMU_HOST directories if not set

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
---
 bin/qemu | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/bin/qemu b/bin/qemu
index 5e3f00d..3fefbd1 100755
--- a/bin/qemu
+++ b/bin/qemu
@@ -87,6 +87,10 @@ dtb_args()
 
 mnt_args()
 {
+    if [ -z "${QEMU_MNT}" ]; then
+	return
+    fi
+
     echo -n "-device ${QEMU_SCSI},id=scsi0 "
     echo -n "-device scsi-hd,bus=scsi0.0,drive=drive0 "
     echo -n "-drive file=${QEMU_MNT},if=none,format=raw,discard=unmap,id=drive0 "
@@ -94,6 +98,10 @@ mnt_args()
 
 host_args()
 {
+    if [ -z "${QEMU_HOST}" ]; then
+	return
+    fi
+
     echo -n "-virtfs local,id=hosfts,path=${QEMU_HOST},security_model=none,mount_tag=hostfs "
 }