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[v10,08/34] qcow2: Add dummy has_subclusters() function

Message ID 2b565be71b51861555f7593d736c42c557671af9.1593791819.git.berto@igalia.com
State New
Headers show
Series Add subcluster allocation to qcow2 | expand

Commit Message

Alberto Garcia July 3, 2020, 3:57 p.m. UTC 
This function will be used by the qcow2 code to check if an image has
subclusters or not.

At the moment this simply returns false. Once all patches needed for
subcluster support are ready then QEMU will be able to create and
read images with subclusters and this function will return the actual
value.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/qcow2.h | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/block/qcow2.h b/block/qcow2.h
index eecbadc4cb..2064dd3d85 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -510,6 +510,12 @@  typedef enum QCow2MetadataOverlap {
 
 #define INV_OFFSET (-1ULL)
 
+static inline bool has_subclusters(BDRVQcow2State *s)
+{
+    /* FIXME: Return false until this feature is complete */
+    return false;
+}
+
 static inline uint64_t get_l2_entry(BDRVQcow2State *s, uint64_t *l2_slice,
                                     int idx)
 {