qemu: Skip QEMU_MNT and QEMU_HOST directories if not set

Signed-off-by: Joachim Nilsson <[email protected]>
troglobit · Apr 12, 2020 · 20b7b0b · 20b7b0b
1 parent c96e0e0
commit 20b7b0b
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/bin/qemu b/bin/qemu
@@ -87,13 +87,21 @@ 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 "
 }
 
 host_args()
 {
+    if [ -z "${QEMU_HOST}" ]; then
+	return
+    fi
+
     echo -n "-virtfs local,id=hosfts,path=${QEMU_HOST},security_model=none,mount_tag=hostfs "
 }