diff options
| author | Max Reitz <mreitz@redhat.com> | 2015-09-14 16:39:47 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-09-14 16:51:37 +0200 |
| commit | b6d36def6d9e9fd187327182d0abafc9b7085d8f (patch) | |
| tree | 475f42def1a1636491174996483a98ba323276b2 /block/qcow2.h | |
| parent | 231f66d2a3401473778c70a75d5f670765ab6d91 (diff) | |
| download | qemu-b6d36def6d9e9fd187327182d0abafc9b7085d8f.tar.gz | |
qcow2: Make size_to_clusters() return uint64_t
Sadly, some images may have more clusters than what can be represented
using a plain int. We should be prepared for that case (in
qcow2_check_refcounts() we actually were trying to catch that case, but
since size_to_clusters() truncated the returned value, that check never
did anything useful).
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 61f1b57a26..d700bf1b62 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -415,7 +415,7 @@ static inline int64_t offset_into_cluster(BDRVQcow2State *s, int64_t offset) return offset & (s->cluster_size - 1); } -static inline int size_to_clusters(BDRVQcow2State *s, int64_t size) +static inline uint64_t size_to_clusters(BDRVQcow2State *s, uint64_t size) { return (size + (s->cluster_size - 1)) >> s->cluster_bits; } @@ -509,8 +509,8 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs, int64_t cluster_index, enum qcow2_discard_type type); int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size); -int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset, - int nb_clusters); +int64_t qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset, + int64_t nb_clusters); int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size); void qcow2_free_clusters(BlockDriverState *bs, int64_t offset, int64_t size, |