From patchwork Wed Sep 30 12:11:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 304036 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=-9.8 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 8E6A0C4727E for ; Wed, 30 Sep 2020 12:13:45 +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 E1770206B7 for ; Wed, 30 Sep 2020 12:13:44 +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="LytOGkM/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1770206B7 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]:43320 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNazP-0005xH-Qa for qemu-devel@archiver.kernel.org; Wed, 30 Sep 2020 08:13:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43212) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNaxE-0003lj-FO for qemu-devel@nongnu.org; Wed, 30 Sep 2020 08:11:28 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:36510) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kNaxC-00079d-N5 for qemu-devel@nongnu.org; Wed, 30 Sep 2020 08:11:28 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601467885; 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=f2vTvpMUs/R+7+oon1oKvJdjTeI/HB6VBRES9SzXx2Q=; b=LytOGkM/uptK/ZTQ3uHLA0iYDIIG+7DOtC1kUU6uEFM/rDTCZ9ueULFQ7qL38eX8+MsvRz j7WmjbKZ2Dzbsuqx+9p7KGJTfSy+Io+vCpr/Xclkew80m6sccLfPCSsmznB/IAn1eGSrU9 flMeOsyrb9M1H3xStQU1IEe8Cjt05Oo= 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-428-9imyaUpBNGiaOzQLglCR1w-1; Wed, 30 Sep 2020 08:11:21 -0400 X-MC-Unique: 9imyaUpBNGiaOzQLglCR1w-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E6494425D0; Wed, 30 Sep 2020 12:11:19 +0000 (UTC) Received: from blue.redhat.com (ovpn-112-208.phx2.redhat.com [10.3.112.208]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2EE3B6198B; Wed, 30 Sep 2020 12:11:17 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PATCH v2 1/5] qemu-nbd: Honor SIGINT and SIGHUP Date: Wed, 30 Sep 2020 07:11:01 -0500 Message-Id: <20200930121105.667049-2-eblake@redhat.com> In-Reply-To: <20200930121105.667049-1-eblake@redhat.com> References: <20200930121105.667049-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/30 00:31:59 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.469, 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=unavailable 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: kwolf@redhat.com, pkrempa@redhat.com, qemu-block@nongnu.org, rjones@redhat.com, vsementsov@virtuozzo.com, stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Honoring just SIGTERM on Linux is too weak; we also want to handle other common signals, and do so even on BSD. Why? Because at least 'qemu-nbd -B bitmap' needs a chance to clean up the in-use bit on bitmaps when the server is shut down via a signal. See also: http://bugzilla.redhat.com/1883608 Signed-off-by: Eric Blake Reviewed-by: Vladimir Sementsov-Ogievskiy --- qemu-nbd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/qemu-nbd.c b/qemu-nbd.c index bacb69b0898b..e7520261134f 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -581,7 +581,7 @@ int main(int argc, char **argv) const char *pid_file_name = NULL; BlockExportOptions *export_opts; -#if HAVE_NBD_DEVICE +#ifdef CONFIG_POSIX /* The client thread uses SIGTERM to interrupt the server. A signal * handler ensures that "qemu-nbd -v -c" exits with a nice status code. */ @@ -589,9 +589,9 @@ int main(int argc, char **argv) memset(&sa_sigterm, 0, sizeof(sa_sigterm)); sa_sigterm.sa_handler = termsig_handler; sigaction(SIGTERM, &sa_sigterm, NULL); -#endif /* HAVE_NBD_DEVICE */ + sigaction(SIGINT, &sa_sigterm, NULL); + sigaction(SIGHUP, &sa_sigterm, NULL); -#ifdef CONFIG_POSIX signal(SIGPIPE, SIG_IGN); #endif