[Qemu-devel] [PATCH V11 16/17] hmp: show ImageInfo in 'info block'

[Wenchao Xia <xiawenc@linux.vnet.ibm.com>]

  Now human monitor can show image details include internal
snapshot info for every block device.

Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
---
 hmp.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/hmp.c b/hmp.c
index 89e1aaf..6f93fcd 100644
--- a/hmp.c
+++ b/hmp.c
@@ -278,6 +278,8 @@ void hmp_info_cpus(Monitor *mon, const QDict *qdict)
 void hmp_info_block(Monitor *mon, const QDict *qdict)
 {
     BlockInfoList *block_list, *info;
+    ImageInfo *image_info;
+    GString *buf = NULL;
 
     block_list = qmp_query_block(NULL);
 
@@ -319,6 +321,23 @@ void hmp_info_block(Monitor *mon, const QDict *qdict)
                             info->value->inserted->iops,
                             info->value->inserted->iops_rd,
                             info->value->inserted->iops_wr);
+
+            if (!buf) {
+                buf = g_string_sized_new(2048);
+            }
+            monitor_printf(mon, " images:\n");
+            image_info = info->value->inserted->image;
+            while (1) {
+                bdrv_image_info_dump(buf, image_info);
+                monitor_printf(mon, "%s", buf->str);
+                g_string_set_size(buf, 0);
+                if (image_info->has_backing_image) {
+                    image_info = image_info->backing_image;
+                } else {
+                    break;
+                }
+            }
+
         } else {
             monitor_printf(mon, " [not inserted]");
         }
@@ -326,6 +345,9 @@ void hmp_info_block(Monitor *mon, const QDict *qdict)
         monitor_printf(mon, "\n");
     }
 
+    if (buf) {
+        g_string_free(buf, true);
+    }
     qapi_free_BlockInfoList(block_list);
 }
 
-- 
1.7.1