From patchwork Tue Dec 24 15:19:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andrew Cooper X-Patchwork-Id: 11309519 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EDE0017EE for ; Tue, 24 Dec 2019 15:20:56 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA899206D3 for ; Tue, 24 Dec 2019 15:20:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="dToNGyUU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA899206D3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1ijlyY-0000LL-SH; Tue, 24 Dec 2019 15:19:58 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1ijlyX-0000KI-5Z for xen-devel@lists.xenproject.org; Tue, 24 Dec 2019 15:19:57 +0000 X-Inumbo-ID: cee1058c-2660-11ea-b6f1-bc764e2007e4 Received: from esa6.hc3370-68.iphmx.com (unknown [216.71.155.175]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id cee1058c-2660-11ea-b6f1-bc764e2007e4; Tue, 24 Dec 2019 15:19:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1577200782; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=layIOlvyz2mflWYBoajH7snKfP2ZntD7gry0s6iWE38=; b=dToNGyUUmMRAsmThyLSYotPPA/fpKVA3AT1qBFr+jcEbvOiTpdlAdnb1 YAHC+8j2KCsErBCpWL9lgFtw8RTzczblKRl/JZ1U/cxGm8Y1YqAswpLuk flTD+FKVLhXh5At5o+/OOFmKrP2LF3xTukL8NQj3H58nJGnZvsSqg79eG 0=; Authentication-Results: esa6.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=andrew.cooper3@citrix.com; spf=Pass smtp.mailfrom=Andrew.Cooper3@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa6.hc3370-68.iphmx.com: no sender authenticity information available from domain of andrew.cooper3@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa6.hc3370-68.iphmx.com; envelope-from="Andrew.Cooper3@citrix.com"; x-sender="andrew.cooper3@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa6.hc3370-68.iphmx.com: domain of Andrew.Cooper3@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa6.hc3370-68.iphmx.com; envelope-from="Andrew.Cooper3@citrix.com"; x-sender="Andrew.Cooper3@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa6.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa6.hc3370-68.iphmx.com; envelope-from="Andrew.Cooper3@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: gVdPLoh5JAPxHWft0PE0GvK98eY8IkTvw8A4+oJ2PIDfQUdYx1NGRyq1XbaM5xoswfF0h95AE1 fdjReqh+D2lMil/HZe3eHWNRuF2LAcDD02UCnrnOYjUVse/2l1TlWusaElg8Jjm+U6KhDzY5iU zYPDxnZDr/EaOZRgfT2Cia1qooE8f5+LcZ2gH9KyhIX/4pWGapiV+s9T0VSMWOM9ZISmejrAlX a62BBMjMx3l8NBMrtDCSEeANmVTXhRiSLEv0lcxpg+GwIx+1wbNQpYK9X5N1TLcqwbN4hpDnQF MH0= X-SBRS: 2.7 X-MesageID: 10540372 X-Ironport-Server: esa6.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.69,351,1571716800"; d="scan'208";a="10540372" From: Andrew Cooper To: Xen-devel Date: Tue, 24 Dec 2019 15:19:27 +0000 Message-ID: <20191224151932.6304-8-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20191224151932.6304-1-andrew.cooper3@citrix.com> References: <20191224151932.6304-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 07/12] python/migration: Update validation logic to understand a v3 stream X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , =?utf-8?q?Marek_Marczykowski-?= =?utf-8?q?G=C3=B3recki?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Signed-off-by: Andrew Cooper --- CC: Marek Marczykowski-Górecki --- tools/python/xen/migration/libxc.py | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/tools/python/xen/migration/libxc.py b/tools/python/xen/migration/libxc.py index d0c4f3527d..5fb51b56ac 100644 --- a/tools/python/xen/migration/libxc.py +++ b/tools/python/xen/migration/libxc.py @@ -119,6 +119,7 @@ class VerifyLibxc(VerifyBase): def __init__(self, info, read): VerifyBase.__init__(self, info, read) + self.version = 0 self.squashed_pagedata_records = 0 @@ -145,9 +146,12 @@ def verify_ihdr(self): raise StreamError("Bad image id: Expected 0x%x, got 0x%x" % (IHDR_IDENT, ident)) - if version != 2: - raise StreamError("Unknown image version: Expected 2, got %d" % - (version, )) + if not (2 <= version <= 3): + raise StreamError( + "Unknown image version: Expected 2 <= ver <= 3, got %d" % + (version, )) + + self.version = version if options & IHDR_OPT_RESZ_MASK: raise StreamError("Reserved bits set in image options field: 0x%x" % @@ -164,7 +168,8 @@ def verify_ihdr(self): "Stream is not native endianess - unable to validate") endian = ["little", "big"][options & IHDR_OPT_LE] - self.info("Libxc Image Header: %s endian" % (endian, )) + self.info("Libxc Image Header: Version %d, %s endian" % + (version, endian)) def verify_dhdr(self): @@ -424,6 +429,16 @@ def verify_record_checkpoint_dirty_pfn_list(self, content): raise RecordError("Found checkpoint dirty pfn list record in stream") + def verify_record_static_data_end(self, content): + """ static data end record """ + + if len(content) != 0: + raise RecordError("End record with non-zero length") + + if self.version < 3: + raise RecordError("Static data end record found in v2 stream") + + record_verifiers = { REC_TYPE_end: VerifyLibxc.verify_record_end, @@ -465,4 +480,7 @@ def verify_record_checkpoint_dirty_pfn_list(self, content): VerifyLibxc.verify_record_checkpoint, REC_TYPE_checkpoint_dirty_pfn_list: VerifyLibxc.verify_record_checkpoint_dirty_pfn_list, + + REC_TYPE_static_data_end: + VerifyLibxc.verify_record_static_data_end, }