Re: [PATCH 06/15] storage file: add qcow2 data-file path parsing from header

In qcow2 header data file is represented by incompitible feature bit and its path is saved to header extension table. Thus, we implement here the logic similar to backing file probing. Signed-off-by: Nikolai Barybin <nikolai.barybin(a)virtuozzo.com&gt; --- src/storage_file/storage_file_probe.c | 46 ++++++++++++++++++++++++--- 1 file changed, 42 insertions(+), 4 deletions(-)

+static int +qcow2GetDataFile(char **res, + virBitmap *features, + char *buf, + size_t buf_size) +{ + *res = NULL; + + if (buf_size < QCOW2v3_HDR_FEATURES_INCOMPATIBLE + 8) + return 0; + + if (features && virBitmapIsBitSet(features, VIR_STORAGE_FILE_FEATURE_DATA_FILE)) { + if (qcow2GetExtensions(buf, buf_size, NULL, res) < 0) + return 0;

+ } + + return 0; +} + + static int vmdk4GetBackingStore(char **res, int *format,