| commit | f8413b3c23b08a547ce18609acc6fae5fd04ed5c | |
| author | Kevin Wolf <kwolf@redhat.com> | |
| Wed, 4 Dec 2013 10:06:36 +0000 (4 11:06 +0100) | ||
| committer | Stefan Hajnoczi <stefanha@redhat.com> | |
| Wed, 4 Dec 2013 10:29:37 +0000 (4 11:29 +0100) | ||
| tree | 01cb8f2707cb3fe8d626ef2550d304c074cfe73a | treesnapshot (tar.gz zip) |
| parent | 66f6b8143ba0fd873a0b4b4b3da41cf604bc5a11 | commitdiff |
qcow2: Zero-initialise first cluster for new images
Strictly speaking, this is only required for has_zero_init() == false,
but it's easy enough to just do a cluster-aligned write that is padded
with zeros after the header.
This fixes that after 'qemu-img create' header extensions are attempted
to be parsed that are really just random leftover data.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Strictly speaking, this is only required for has_zero_init() == false,
but it's easy enough to just do a cluster-aligned write that is padded
with zeros after the header.
This fixes that after 'qemu-img create' header extensions are attempted
to be parsed that are really just random leftover data.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| block/qcow2.c | diffblobblamehistory |