diff options
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 3a34212181..367d9bdbb5 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -124,7 +124,16 @@ typedef struct QCowCreateState { int64_t refcount_block_offset; } QCowCreateState; -static int size_to_clusters(BDRVQcowState *s, int64_t size) +/* XXX This could be private for qcow2-cluster.c */ +typedef struct QCowL2Meta +{ + uint64_t offset; + int n_start; + int nb_available; + int nb_clusters; +} QCowL2Meta; + +static inline int size_to_clusters(BDRVQcowState *s, int64_t size) { return (size + (s->cluster_size - 1)) >> s->cluster_bits; } @@ -133,6 +142,8 @@ static int size_to_clusters(BDRVQcowState *s, int64_t size) /* qcow2.c functions */ void l2_cache_reset(BlockDriverState *bs); +int backing_read1(BlockDriverState *bs, + int64_t sector_num, uint8_t *buf, int nb_sectors); /* qcow2-refcount.c functions */ int refcount_init(BlockDriverState *bs); @@ -141,7 +152,9 @@ void refcount_close(BlockDriverState *bs); int64_t alloc_clusters(BlockDriverState *bs, int64_t size); int64_t alloc_bytes(BlockDriverState *bs, int size); void free_clusters(BlockDriverState *bs, - int64_t offset, int64_t size); + int64_t offset, int64_t size); +void free_any_clusters(BlockDriverState *bs, + uint64_t cluster_offset, int nb_clusters); void create_refcount_update(QCowCreateState *s, int64_t offset, int64_t size); int update_snapshot_refcount(BlockDriverState *bs, @@ -151,4 +164,24 @@ int update_snapshot_refcount(BlockDriverState *bs, int check_refcounts(BlockDriverState *bs); +/* qcow2-cluster.c functions */ +int grow_l1_table(BlockDriverState *bs, int min_size); +int decompress_cluster(BDRVQcowState *s, uint64_t cluster_offset); +void encrypt_sectors(BDRVQcowState *s, int64_t sector_num, + uint8_t *out_buf, const uint8_t *in_buf, + int nb_sectors, int enc, + const AES_KEY *key); + +uint64_t get_cluster_offset(BlockDriverState *bs, uint64_t offset, int *num); +uint64_t alloc_cluster_offset(BlockDriverState *bs, + uint64_t offset, + int n_start, int n_end, + int *num, QCowL2Meta *m); +uint64_t alloc_compressed_cluster_offset(BlockDriverState *bs, + uint64_t offset, + int compressed_size); + +int alloc_cluster_link_l2(BlockDriverState *bs, uint64_t cluster_offset, + QCowL2Meta *m); + #endif |