From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 7CBABC35271 for ; Fri, 16 Oct 2020 10:45:53 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DAEB82084C for ; Fri, 16 Oct 2020 10:45:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DAEB82084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=dm-devel-bounces@redhat.com 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-333-a2XH0A85MwGeG1JF-YUVrg-1; Fri, 16 Oct 2020 06:45:49 -0400 X-MC-Unique: a2XH0A85MwGeG1JF-YUVrg-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 949BF101962F; Fri, 16 Oct 2020 10:45:42 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7AA6B60C11; Fri, 16 Oct 2020 10:45:42 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 4F73058137; Fri, 16 Oct 2020 10:45:42 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 09GAjMWl020813 for ; Fri, 16 Oct 2020 06:45:22 -0400 Received: by smtp.corp.redhat.com (Postfix) id 35DB62011559; Fri, 16 Oct 2020 10:45:22 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast02.extmail.prod.ext.rdu2.redhat.com [10.11.55.18]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 30E0E2011557 for ; Fri, 16 Oct 2020 10:45:22 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1680F80018D for ; Fri, 16 Oct 2020 10:45:22 +0000 (UTC) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-103-wWa5PnygMnG4Ls8_CKSVRw-1; Fri, 16 Oct 2020 06:45:17 -0400 X-MC-Unique: wWa5PnygMnG4Ls8_CKSVRw-1 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 32FD8AF57; Fri, 16 Oct 2020 10:45:15 +0000 (UTC) From: mwilck@suse.com To: Christophe Varoqui , Benjamin Marzinski Date: Fri, 16 Oct 2020 12:44:49 +0200 Message-Id: <20201016104501.8700-18-mwilck@suse.com> In-Reply-To: <20201016104501.8700-1-mwilck@suse.com> References: <20201016104501.8700-1-mwilck@suse.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 09GAjMWl020813 X-loop: dm-devel@redhat.com Cc: lixiaokeng@huawei.com, dm-devel@redhat.com, Martin Wilck Subject: [dm-devel] [PATCH v2 17/29] multipathd: add cleanup_child() exit handler X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Martin Wilck cleanup_child() calls all cleanups in the right order, in an exit handler. Reviewed-by: Benjamin Marzinski Signed-off-by: Martin Wilck --- multipathd/main.c | 47 +++++++++++++++++++++++++++-------------------- 1 file changed, 27 insertions(+), 20 deletions(-) diff --git a/multipathd/main.c b/multipathd/main.c index 45fc3f0..0578445 100644 --- a/multipathd/main.c +++ b/multipathd/main.c @@ -3023,6 +3023,27 @@ static void cleanup_rcu(int dummy __attribute__((unused)), void *arg) rcu_unregister_thread(); } +static void cleanup_child(void) +{ + cleanup_threads(); + cleanup_vecs(); + cleanup_foreign(); + cleanup_checkers(); + cleanup_prio(); + if (poll_dmevents) + cleanup_dmevent_waiter(); + + cleanup_pidfile(); + if (logsink == 1) + log_thread_stop(); + + cleanup_conf(); + +#ifdef _DEBUG_ + dbg_free_final(NULL); +#endif +} + static int sd_notify_exit(int err) { #ifdef USE_SYSTEMD @@ -3049,7 +3070,11 @@ child (__attribute__((unused)) void *param) mlockall(MCL_CURRENT | MCL_FUTURE); signal_init(); crdp = setup_rcu(); - on_exit(cleanup_rcu, crdp); + + if (on_exit(cleanup_rcu, crdp) || + atexit(cleanup_child)) { + fprintf(stderr, "failed to register cleanup handlers\n"); + } setup_thread_attr(&misc_attr, 64 * 1024, 0); setup_thread_attr(&uevent_attr, DEFAULT_UEVENT_STACKSIZE * 1024, 0); @@ -3063,8 +3088,6 @@ child (__attribute__((unused)) void *param) pid_fd = pidfile_create(DEFAULT_PIDFILE, daemon_pid); if (pid_fd < 0) { condlog(1, "failed to create pidfile"); - if (logsink == 1) - log_thread_stop(); exit(1); } @@ -3212,24 +3235,8 @@ child (__attribute__((unused)) void *param) exit_code = 0; failed: - cleanup_threads(); - cleanup_vecs(); - cleanup_foreign(); - cleanup_checkers(); - cleanup_prio(); - if (poll_dmevents) - cleanup_dmevent_waiter(); - - /* We're done here */ - cleanup_pidfile(); condlog(2, "--------shut down-------"); - - if (logsink == 1) - log_thread_stop(); - cleanup_conf(); -#ifdef _DEBUG_ - dbg_free_final(NULL); -#endif + /* All cleanup is done in the cleanup_child() exit handler */ return sd_notify_exit(exit_code); } -- 2.28.0 -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel