diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 9489d795e5..59cf706dc2 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -73,6 +73,7 @@ typedef struct { #define QCOW2_EXT_MAGIC_FEATURE_TABLE 0x6803f857 #define QCOW2_EXT_MAGIC_CRYPTO_HEADER 0x0537be77 #define QCOW2_EXT_MAGIC_BITMAPS 0x23852875 +#define QCOW2_EXT_MAGIC_DATA_FILE 0x44415441 static int coroutine_fn qcow2_co_preadv_compressed(BlockDriverState *bs, @@ -1452,6 +1453,9 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, goto fail; } + /* TODO Open external data file */ + s->data_file = bs->file; + /* qcow2_read_extension may have set up the crypto context * if the crypt method needs a header region, some methods * don't need header extensions, so must check here @@ -2441,6 +2445,11 @@ int qcow2_update_header(BlockDriverState *bs) .name = "corrupt bit", }, { + .type = QCOW2_FEAT_TYPE_INCOMPATIBLE, + .bit = QCOW2_INCOMPAT_DATA_FILE_BITNR, + .name = "external data file", + }, + { .type = QCOW2_FEAT_TYPE_COMPATIBLE, .bit = QCOW2_COMPAT_LAZY_REFCOUNTS_BITNR, .name = "lazy refcounts", |