diff options
| author | Max Reitz <mreitz@redhat.com> | 2013-10-09 10:46:18 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-10-11 14:03:57 +0200 |
| commit | 37764dfb71c4d0d058b71ba33340c6beab7d5a66 (patch) | |
| tree | 2d6db7287d6b768e49bf0d1b2d8b95ef8f6c0241 | |
| parent | a8d8ecb77fc16da49ea2c1edae267dc9d0c01dfd (diff) | |
qcow2: Add support for ImageInfoSpecific
Add a new ImageInfoSpecificQCow2 type as a subtype of ImageInfoSpecific.
This contains the compatibility level as a string and an optional
lazy_refcounts boolean (optional means mandatory for compat >= 1.1 and
not available for compat == 0.10).
Also, add qcow2_get_specific_info, which returns this information.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/qcow2.c | 28 | ||||
| -rw-r--r-- | qapi-schema.json | 16 |
2 files changed, 44 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 4a9888cc7f..e8d2735be7 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1810,6 +1810,33 @@ static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) return 0; } +static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs) +{ + BDRVQcowState *s = bs->opaque; + ImageInfoSpecific *spec_info = g_new(ImageInfoSpecific, 1); + + *spec_info = (ImageInfoSpecific){ + .kind = IMAGE_INFO_SPECIFIC_KIND_QCOW2, + { + .qcow2 = g_new(ImageInfoSpecificQCow2, 1), + }, + }; + if (s->qcow_version == 2) { + *spec_info->qcow2 = (ImageInfoSpecificQCow2){ + .compat = g_strdup("0.10"), + }; + } else if (s->qcow_version == 3) { + *spec_info->qcow2 = (ImageInfoSpecificQCow2){ + .compat = g_strdup("1.1"), + .lazy_refcounts = s->compatible_features & + QCOW2_COMPAT_LAZY_REFCOUNTS, + .has_lazy_refcounts = true, + }; + } + + return spec_info; +} + #if 0 static void dump_refcounts(BlockDriverState *bs) { @@ -2130,6 +2157,7 @@ static BlockDriver bdrv_qcow2 = { .bdrv_snapshot_list = qcow2_snapshot_list, .bdrv_snapshot_load_tmp = qcow2_snapshot_load_tmp, .bdrv_get_info = qcow2_get_info, + .bdrv_get_specific_info = qcow2_get_specific_info, .bdrv_save_vmstate = qcow2_save_vmstate, .bdrv_load_vmstate = qcow2_load_vmstate, diff --git a/qapi-schema.json b/qapi-schema.json index 246789b378..a1a81a4481 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -210,6 +210,21 @@ 'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } } ## +# @ImageInfoSpecificQCow2: +# +# @compat: compatibility level +# +# @lazy-refcounts: #optional on or off; only valid for compat >= 1.1 +# +# Since: 1.7 +## +{ 'type': 'ImageInfoSpecificQCow2', + 'data': { + 'compat': 'str', + '*lazy-refcounts': 'bool' + } } + +## # @ImageInfoSpecific: # # A discriminated record of image format specific information structures. @@ -219,6 +234,7 @@ { 'union': 'ImageInfoSpecific', 'data': { + 'qcow2': 'ImageInfoSpecificQCow2' } } ## |