diff options
| -rw-r--r-- | block/vpc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/block/vpc.c b/block/vpc.c index 574879ba7c..82911ebead 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -219,6 +219,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, uint64_t pagetable_size; int disk_type = VHD_DYNAMIC; int ret; + int64_t bs_size; bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); @@ -411,7 +412,13 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, } } - if (s->free_data_block_offset > bdrv_getlength(bs->file->bs)) { + bs_size = bdrv_getlength(bs->file->bs); + if (bs_size < 0) { + error_setg_errno(errp, -bs_size, "Unable to learn image size"); + ret = bs_size; + goto fail; + } + if (s->free_data_block_offset > bs_size) { error_setg(errp, "block-vpc: free_data_block_offset points after " "the end of file. The image has been truncated."); ret = -EINVAL; |