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[v6,08/32] qcow2: Add dummy has_subclusters() function

Message ID 98663537d719dd24e755926ce46b190f5e31ab5d.1590331741.git.berto@igalia.com
State New
Headers show
Series Add subcluster allocation to qcow2 | expand

Commit Message

Alberto Garcia May 24, 2020, 2:51 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

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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diff --git a/block/qcow2.h b/block/qcow2.h
index afee84f41f..f41bfd743f 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)