this adds a check that a dynamic VHD file has not been
accidently truncated (e.g. during transfer or upload).
Signed-off-by: Peter Lieven <address@hidden>
---
block/vpc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/block/vpc.c b/block/vpc.c
index 1acc1d4..921364e 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -269,6 +269,13 @@ static int vpc_open(BlockDriverState *bs, QDict *options,
int flags,
}
}
+ if (s->free_data_block_offset > bdrv_getlength(bs->file)) {
+ ret = -EINVAL;
+ fprintf(stderr, "block-vpc: free_data_block_offset points after"
+ "the end of file. the image has been
truncated.\n");