From owner-svn-src-all@freebsd.org Mon Jan 7 16:16:48 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6ED0814972A0; Mon, 7 Jan 2019 16:16:48 +0000 (UTC) (envelope-from kevans@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 DE1876BC8D; Mon, 7 Jan 2019 16:16:47 +0000 (UTC) (envelope-from kevans@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 CFF361A447; Mon, 7 Jan 2019 16:16:47 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x07GGlJB008257; Mon, 7 Jan 2019 16:16:47 GMT (envelope-from kevans@FreeBSD.org) Received: (from kevans@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x07GGllJ008256; Mon, 7 Jan 2019 16:16:47 GMT (envelope-from kevans@FreeBSD.org) Message-Id: <201901071616.x07GGllJ008256@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kevans set sender to kevans@FreeBSD.org using -f From: Kyle Evans Date: Mon, 7 Jan 2019 16:16:47 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342849 - head/lib/libbe X-SVN-Group: head X-SVN-Commit-Author: kevans X-SVN-Commit-Paths: head/lib/libbe X-SVN-Commit-Revision: 342849 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: DE1876BC8D X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_SHORT(-0.96)[-0.962,0]; NEURAL_HAM_LONG(-1.00)[-0.998,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jan 2019 16:16:48 -0000 Author: kevans Date: Mon Jan 7 16:16:47 2019 New Revision: 342849 URL: https://svnweb.freebsd.org/changeset/base/342849 Log: libbe(3): Don't allow bootfs to be destroyed Previously, the following sequence of events was feasible under some circumstance: bectl create test bectl activate test # the test BE dataset gets promoted and set as bootfs bectl destroy test I was unable to reproduce the destroy succeeding, but we should be rejecting this before it even gets to libzfs because it would leave the system in an inconsistent state. Forcing the user to be explicit as to which environment should be activated instead is much better. Reported by: Graham Perrin MFC after: 3 days Modified: head/lib/libbe/be.c Modified: head/lib/libbe/be.c ============================================================================== --- head/lib/libbe/be.c Mon Jan 7 15:53:54 2019 (r342848) +++ head/lib/libbe/be.c Mon Jan 7 16:16:47 2019 (r342849) @@ -211,7 +211,8 @@ be_destroy(libbe_handle_t *lbh, const char *name, int if (!zfs_dataset_exists(lbh->lzh, path, ZFS_TYPE_FILESYSTEM)) return (set_error(lbh, BE_ERR_NOENT)); - if (strcmp(path, lbh->rootfs) == 0) + if (strcmp(path, lbh->rootfs) == 0 || + strcmp(path, lbh->bootfs) == 0) return (set_error(lbh, BE_ERR_DESTROYACT)); fs = zfs_open(lbh->lzh, p, ZFS_TYPE_FILESYSTEM);