From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39170) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cdKmA-0003gX-T4 for qemu-devel@nongnu.org; Mon, 13 Feb 2017 12:51:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cdKm7-0005yl-D2 for qemu-devel@nongnu.org; Mon, 13 Feb 2017 12:50:58 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42714) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cdKm7-0005yf-7L for qemu-devel@nongnu.org; Mon, 13 Feb 2017 12:50:55 -0500 From: "Dr. David Alan Gilbert (git)" Date: Mon, 13 Feb 2017 17:50:30 +0000 Message-Id: <20170213175033.7314-12-dgilbert@redhat.com> In-Reply-To: <20170213175033.7314-1-dgilbert@redhat.com> References: <20170213175033.7314-1-dgilbert@redhat.com> Subject: [Qemu-devel] [PULL 11/14] migration: Add VMSTATE_UNUSED_VARRAY_UINT32 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: quintela@redhat.com, ashijeetacharya@gmail.com, amit@kernel.org, pbutsykin@virtuozzo.com, zhang.zhanghailiang@huawei.com From: "Dr. David Alan Gilbert" VMSTATE_UNUSED_VARRAY_UINT32 is used to skip a chunk of the stream that's an n-element array; note the array size and the dynamic value read never get multiplied so there's no overflow risk. Signed-off-by: Dr. David Alan Gilbert Message-Id: <20170203160651.19917-2-dgilbert@redhat.com> Reviewed-by: Juan Quintela Signed-off-by: Dr. David Alan Gilbert --- include/migration/vmstate.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 39db47e..7339594 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -658,6 +658,17 @@ extern const VMStateInfo vmstate_info_qtailq; .flags = VMS_BUFFER, \ } +/* Discard size * field_num bytes, where field_num is a uint32 member */ +#define VMSTATE_UNUSED_VARRAY_UINT32(_state, _test, _version, _field_num, _size) {\ + .name = "unused", \ + .field_exists = (_test), \ + .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ + .version_id = (_version), \ + .size = (_size), \ + .info = &vmstate_info_unused_buffer, \ + .flags = VMS_VARRAY_UINT32 | VMS_BUFFER, \ +} + /* _field_size should be a int32_t field in the _state struct giving the * size of the bitmap _field in bits. */ -- 2.9.3