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[v7,08/32] qcow2: Add dummy has_subclusters() function

Message ID cde712828e3475aab9d86313de53df9072e63078.1590429901.git.berto@igalia.com
State Superseded
Headers show
Series None | expand

Commit Message

Alberto Garcia May 25, 2020, 6:08 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 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)
 {