From owner-svn-src-head@freebsd.org Tue Sep 3 14:06:34 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7275DDCA06; Tue, 3 Sep 2019 14:06:29 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2610:1c1:1:6074::16:84]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N7zS1FrBz4PZv; Tue, 3 Sep 2019 14:06:28 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id CBB0A1A6E5; Tue, 3 Sep 2019 14:06:08 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id B980CB86E; Mon, 8 Apr 2019 18:16:53 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 32F8685166; Mon, 8 Apr 2019 18:16:53 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 538) id 10D1AB828; Mon, 8 Apr 2019 18:16:53 +0000 (UTC) Delivered-To: src-committers@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [96.47.72.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id B2841B826 for ; Mon, 8 Apr 2019 18:16:50 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6984C85161; Mon, 8 Apr 2019 18:16:50 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 42BA927101; Mon, 8 Apr 2019 18:16:50 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x38IGoc0049302; Mon, 8 Apr 2019 18:16:50 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x38IGopn049301; Mon, 8 Apr 2019 18:16:50 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201904081816.x38IGopn049301@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346038 - head/sbin/mount X-SVN-Group: head X-SVN-Commit-Author: kib X-SVN-Commit-Paths: head/sbin/mount X-SVN-Commit-Revision: 346038 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 32F8685166 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_SHORT(-0.98)[-0.980,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:06:34 -0000 X-Original-Date: Mon, 8 Apr 2019 18:16:50 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:34 -0000 Author: kib Date: Mon Apr 8 18:16:49 2019 New Revision: 346038 URL: https://svnweb.freebsd.org/changeset/base/346038 Log: Exercise some care before sending SIGHUP to mountd. Reviewed by: antoine, emaste, oshogbo Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D19847 Modified: head/sbin/mount/mount.c Modified: head/sbin/mount/mount.c ============================================================================== --- head/sbin/mount/mount.c Mon Apr 8 18:15:10 2019 (r346037) +++ head/sbin/mount/mount.c Mon Apr 8 18:16:49 2019 (r346038) @@ -227,6 +227,7 @@ restart_mountd(void) struct pidfh *pfh; pid_t mountdpid; + mountdpid = 0; pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &mountdpid); if (pfh != NULL) { /* Mountd is not running. */ @@ -237,6 +238,16 @@ restart_mountd(void) /* Cannot open pidfile for some reason. */ return; } + + /* + * Refuse to send broadcast or group signals, this has + * happened due to the bugs in pidfile(3). + */ + if (mountdpid <= 0) { + warnx("mountd pid %d, refusing to send SIGHUP", mountdpid); + return; + } + /* We have mountd(8) PID in mountdpid varible, let's signal it. */ if (kill(mountdpid, SIGHUP) == -1) err(1, "signal mountd");