From 3513d70d7fa7e3739f88f7d8128b98409ad193e3 Mon Sep 17 00:00:00 2001
From: Tao Liu <ltao@redhat.com>
Date: Thu, 27 Oct 2022 17:47:19 +0800
Subject: [PATCH] Output the serial string of virtio disks

Previously, the serial string of virtio disks is not outputted. For
example we can observe the issue if we have the following virtio
disk configuration:
  <target dev="vda" bus="virtio"/>
  <serial>vblk1</serial>

Before:
       description: Virtual I/O device
       physical id: 0
       bus info: virtio@3
       logical name: /dev/vda
       size: 8GiB (8589MB)
       capabilities: partitioned partitioned:dos

After:
       description: Virtual I/O device
       physical id: 0
       bus info: virtio@3
       logical name: /dev/vda
       serial: vblk1
       size: 8GiB (8589MB)
       capabilities: partitioned partitioned:dos

Signed-off-by: Tao Liu <ltao@redhat.com>
---
 src/core/virtio.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/virtio.cc b/src/core/virtio.cc
index 91d1196e..b8d1cb86 100644
--- a/src/core/virtio.cc
+++ b/src/core/virtio.cc
@@ -26,6 +26,10 @@ static void scan_virtio_block(hwNode & device, const sysfs::entry & entry)
   if (devname.empty())
     return;
   device.setLogicalName(devname);
+  vector<sysfs::entry> e = entry.devices();
+  if (e.size() == 1) {
+    device.setSerial(e[0].string_attr("serial"));
+  }
   scan_disk(device);
   device.claim();
 }