From 96c51eb5e46af2312b33f745ad72acb20e799aea Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Thu, 13 Jun 2013 11:21:29 +0800 Subject: [PATCH] vmdk: refuse to open higher version than supported Refuse to open higher version for safety. Although we try to be compatible with published VMDK spec, VMware has newer version from ESXi 5.1 exported OVF/OVA, which we have no knowledge what's changed in it. And it is very likely to have more new versions in the future, so it's not safe to open them blindly. Signed-off-by: Fam Zheng Signed-off-by: Stefan Hajnoczi --- block/vmdk.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/block/vmdk.c b/block/vmdk.c index 65ae011..975e1d4 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -561,6 +561,15 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, header = footer.header; } + if (le32_to_cpu(header.version) >= 3) { + char buf[64]; + snprintf(buf, sizeof(buf), "VMDK version %d", + le32_to_cpu(header.version)); + qerror_report(QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, + bs->device_name, "vmdk", buf); + return -ENOTSUP; + } + l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gte) * le64_to_cpu(header.granularity); if (l1_entry_sectors == 0) { -- 2.7.4