[Qemu-devel] [PATCH V4 10/10] block/qcow2: add compress info to image specific info

[Peter Lieven <pl@kamp.de>]

Signed-off-by: Peter Lieven <pl@kamp.de>
---
 block/qcow2.c        | 9 +++++++++
 qapi/block-core.json | 6 +++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index 0ba5977..59cf3b3 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3942,6 +3942,15 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
         spec_info->u.qcow2.data->encrypt = qencrypt;
     }
 
+    if (s->compress_format != -1) {
+        Qcow2Compress *qcompress = g_new0(Qcow2Compress, 1);
+        qcompress->format = s->compress_format;
+        qcompress->level = s->compress_level;
+        qcompress->has_level = true;
+        spec_info->u.qcow2.data->compress = qcompress;
+        spec_info->u.qcow2.data->has_compress = true;
+    }
+
     return spec_info;
 }
 
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 9eb76df..9310715 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -68,6 +68,9 @@
 # @encrypt: details about encryption parameters; only set if image
 #           is encrypted (since 2.10)
 #
+# @compress: details about parameters for compressed clusters; only set if
+#            the compress format header extension is present (since 2.10)
+#
 # Since: 1.7
 ##
 { 'struct': 'ImageInfoSpecificQCow2',
@@ -76,7 +79,8 @@
       '*lazy-refcounts': 'bool',
       '*corrupt': 'bool',
       'refcount-bits': 'int',
-      '*encrypt': 'ImageInfoSpecificQCow2Encryption'
+      '*encrypt': 'ImageInfoSpecificQCow2Encryption',
+      '*compress': 'Qcow2Compress'
   } }
 
 ##
-- 
1.9.1