From patchwork Fri Oct 2 16:27:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 303815 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FC03C4363C for ; Fri, 2 Oct 2020 16:29:31 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 0D218206FA for ; Fri, 2 Oct 2020 16:29:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="YpHEYGex" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D218206FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:57632 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kONw2-0006QK-6q for qemu-devel@archiver.kernel.org; Fri, 02 Oct 2020 12:29:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59296) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kONuf-0004iZ-5L for qemu-devel@nongnu.org; Fri, 02 Oct 2020 12:28:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:47510) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kONud-0003DK-8k for qemu-devel@nongnu.org; Fri, 02 Oct 2020 12:28:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601656082; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PBACXbY/WtiD05g1DeetiCFCzUtxr/QumKKdfU/gvjM=; b=YpHEYGexOCF0LcfqfRrThWiaUbxG3ITGok9k2goEGI5fWlEqx0+/N/NyhuC+AMhSPwpFPW Z7I6unV8HSSFCTacMmyhblz63rM7r8w0J1tXaL8zqLj+GEFN3Qk6YfVGH4qScugbdQtVn9 Yo9nNOfw9C9DBCy/BBswTkOzgw1/rSo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-64-p1VDq1DeMwyqfAEXKaGgsQ-1; Fri, 02 Oct 2020 12:28:00 -0400 X-MC-Unique: p1VDq1DeMwyqfAEXKaGgsQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BC5441074648; Fri, 2 Oct 2020 16:27:59 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.36.110.2]) by smtp.corp.redhat.com (Postfix) with ESMTP id 87AA21002C03; Fri, 2 Oct 2020 16:27:56 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v5 02/10] migration: stop returning errno from load_snapshot() Date: Fri, 2 Oct 2020 17:27:39 +0100 Message-Id: <20201002162747.3123597-3-berrange@redhat.com> In-Reply-To: <20201002162747.3123597-1-berrange@redhat.com> References: <20201002162747.3123597-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/01 23:37:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Krempa , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Denis V. Lunev" , qemu-block@nongnu.org, Juan Quintela , Markus Armbruster , Max Reitz , Pavel Dovgalyuk , Paolo Bonzini , John Snow , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" None of the callers care about the errno value since there is a full Error object populated. This gives consistency with save_snapshot() which already just returns -1. Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Daniel P. Berrangé --- migration/savevm.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/migration/savevm.c b/migration/savevm.c index 0e39df59e5..3d77277f0b 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2871,20 +2871,20 @@ int load_snapshot(const char *name, Error **errp) if (!replay_can_snapshot()) { error_setg(errp, "Record/replay does not allow loading snapshot " "right now. Try once more later."); - return -EINVAL; + return -1; } if (!bdrv_all_can_snapshot(errp)) { - return -ENOTSUP; + return -1; } ret = bdrv_all_find_snapshot(name, errp); if (ret < 0) { - return ret; + return -1; } bs_vm_state = bdrv_all_find_vmstate_bs(errp); if (!bs_vm_state) { - return -ENOTSUP; + return -1; } aio_context = bdrv_get_aio_context(bs_vm_state); @@ -2893,11 +2893,11 @@ int load_snapshot(const char *name, Error **errp) ret = bdrv_snapshot_find(bs_vm_state, &sn, name); aio_context_release(aio_context); if (ret < 0) { - return ret; + return -1; } else if (sn.vm_state_size == 0) { error_setg(errp, "This is a disk-only snapshot. Revert to it " " offline using qemu-img"); - return -EINVAL; + return -1; } /* Flush all IO requests so they don't interfere with the new state. */ @@ -2912,7 +2912,6 @@ int load_snapshot(const char *name, Error **errp) f = qemu_fopen_bdrv(bs_vm_state, 0); if (!f) { error_setg(errp, "Could not open VM state file"); - ret = -EINVAL; goto err_drain; } @@ -2928,14 +2927,14 @@ int load_snapshot(const char *name, Error **errp) if (ret < 0) { error_setg(errp, "Error %d while loading VM state", ret); - return ret; + return -1; } return 0; err_drain: bdrv_drain_all_end(); - return ret; + return -1; } void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)