148     BlockDriverState **pbs, *bs;  in bdrv_new()  local
154         pbs = &bdrv_first;  in bdrv_new()
155         while (*pbs != NULL)  in bdrv_new()
156             pbs = &(*pbs)->next;  in bdrv_new()
157         *pbs = bs;  in bdrv_new()
308 int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags)  in bdrv_file_open()  argument
320     *pbs = bs;  in bdrv_file_open()
488     BlockDriverState **pbs;  in bdrv_delete()  local
490     pbs = &bdrv_first;  in bdrv_delete()
491     while (*pbs != bs && *pbs != NULL)  in bdrv_delete()
492         pbs = &(*pbs)->next;  in bdrv_delete()
493     if (*pbs == bs)  in bdrv_delete()
494         *pbs = bs->next;  in bdrv_delete()