block: Open the underlying image file in generic code

[qemu.git] / block_int.h

diff --git a/block_int.h b/block_int.h
index d4067ff7264c0eff5fa517579d1dc9fb403d0374..a3afe638fbe2f50c0af356bdd17516e3b64b86e9 100644 (file)
--- a/block_int.h
+++ b/block_int.h
@@ -51,7 +51,8 @@ struct BlockDriver {
     int instance_size;
     int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
     int (*bdrv_probe_device)(const char *filename);
-    int (*bdrv_open)(BlockDriverState *bs, const char *filename, int flags);
+    int (*bdrv_open)(BlockDriverState *bs, int flags);
+    int (*bdrv_file_open)(BlockDriverState *bs, const char *filename, int flags);
     int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
                      uint8_t *buf, int nb_sectors);
     int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,
@@ -155,6 +156,8 @@ struct BlockDriverState {
     int media_changed;
 
     BlockDriverState *backing_hd;
+    BlockDriverState *file;
+
     /* async read/write emulation */
 
     void *sync_aiocb;