Commit fb8fe35f authored by Peter Lieven's avatar Peter Lieven Committed by Kevin Wolf
Browse files

block/vpc: check that the image has not been truncated 



this adds a check that a dynamic VHD file has not been
accidently truncated (e.g. during transfer or upload).

Signed-off-by: default avatarPeter Lieven <pl@kamp.de>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent fefddf95

block/vpc.c

+7 −0
Original line number Diff line number Diff line
@@ -260,6 +260,13 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, 
            }

        }



        if (s->free_data_block_offset > bdrv_getlength(bs->file)) {

            error_setg(errp, "block-vpc: free_data_block_offset points after "

                             "the end of file. The image has been truncated.");

            ret = -EINVAL;

            goto fail;

        }



        s->last_bitmap_offset = (int64_t) -1;



#ifdef CACHE