add support for protocol driver create_options

This patch enables protocol drivers to use their create options which
are not supported by the format.  For example, protcol drivers can use
a backing_file option with raw format.

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/block.h b/block.h
index 24efeb68b1..9034ebb924 100644
--- a/block.h
+++ b/block.h
@@ -54,6 +54,7 @@ void bdrv_info_stats(Monitor *mon, QObject **ret_data);
 
 void bdrv_init(void);
 void bdrv_init_with_whitelist(void);
+BlockDriver *bdrv_find_protocol(const char *filename);
 BlockDriver *bdrv_find_format(const char *format_name);
 BlockDriver *bdrv_find_whitelisted_format(const char *format_name);
 int bdrv_create(BlockDriver *drv, const char* filename,