From owner-svn-src-head@freebsd.org Thu May 31 02:54:13 2018 Return-Path: Delivered-To: svn-src-head@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 C5F6EEFA87D; Thu, 31 May 2018 02:54:12 +0000 (UTC) (envelope-from imp@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 79DD76A5ED; Thu, 31 May 2018 02:54:12 +0000 (UTC) (envelope-from imp@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 5C5BA14368; Thu, 31 May 2018 02:54:12 +0000 (UTC) (envelope-from imp@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w4V2sCag073084; Thu, 31 May 2018 02:54:12 GMT (envelope-from imp@FreeBSD.org) Received: (from imp@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w4V2sCWW073082; Thu, 31 May 2018 02:54:12 GMT (envelope-from imp@FreeBSD.org) Message-Id: <201805310254.w4V2sCWW073082@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: imp set sender to imp@FreeBSD.org using -f From: Warner Losh Date: Thu, 31 May 2018 02:54:12 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r334412 - head/stand/userboot/userboot X-SVN-Group: head X-SVN-Commit-Author: imp X-SVN-Commit-Paths: head/stand/userboot/userboot X-SVN-Commit-Revision: 334412 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2018 02:54:13 -0000 Author: imp Date: Thu May 31 02:54:11 2018 New Revision: 334412 URL: https://svnweb.freebsd.org/changeset/base/334412 Log: Pass a struct devdesc to the format commands. Use proper type rather than doing weird type-punning that happened to work because the size was right. We copied a zfs devdesc into a disk_devdesc and then after passing through a NULL pointer reinterpreted it as a zfs_devdesc. Instead, pass the base devdesc around and 'upcase' when we know the types are right. This has the happy side effect of fixing a gcc warning about bad type punning. Differential Revision: https://reviews.freebsd.org/D15629 Modified: head/stand/userboot/userboot/devicename.c head/stand/userboot/userboot/main.c Modified: head/stand/userboot/userboot/devicename.c ============================================================================== --- head/stand/userboot/userboot/devicename.c Thu May 31 02:25:46 2018 (r334411) +++ head/stand/userboot/userboot/devicename.c Thu May 31 02:54:11 2018 (r334412) @@ -175,30 +175,30 @@ userboot_parsedev(struct disk_devdesc **dev, const cha char * userboot_fmtdev(void *vdev) { - struct disk_devdesc *dev = (struct disk_devdesc *)vdev; + struct devdesc *dev = (struct devdesc *)vdev; static char buf[128]; /* XXX device length constant? */ - switch(dev->dd.d_dev->dv_type) { + switch(dev->d_dev->dv_type) { case DEVT_NONE: strcpy(buf, "(no device)"); break; case DEVT_CD: - sprintf(buf, "%s%d:", dev->dd.d_dev->dv_name, dev->dd.d_unit); + sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit); break; case DEVT_DISK: return (disk_fmtdev(vdev)); case DEVT_NET: - sprintf(buf, "%s%d:", dev->dd.d_dev->dv_name, dev->dd.d_unit); + sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit); break; case DEVT_ZFS: #if defined(USERBOOT_ZFS_SUPPORT) return (zfs_fmtdev(vdev)); #else - sprintf(buf, "%s%d:", dev->dd.d_dev->dv_name, dev->dd.d_unit); + sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit); #endif break; } Modified: head/stand/userboot/userboot/main.c ============================================================================== --- head/stand/userboot/userboot/main.c Thu May 31 02:25:46 2018 (r334411) +++ head/stand/userboot/userboot/main.c Thu May 31 02:54:11 2018 (r334412) @@ -155,20 +155,19 @@ static void extract_currdev(void) { struct disk_devdesc dev; - - //bzero(&dev, sizeof(dev)); - + struct devdesc *dd; #if defined(USERBOOT_ZFS_SUPPORT) + struct zfs_devdesc zdev; + CTASSERT(sizeof(struct disk_devdesc) >= sizeof(struct zfs_devdesc)); if (userboot_zfs_found) { - struct zfs_devdesc zdev; /* Leave the pool/root guid's unassigned */ bzero(&zdev, sizeof(zdev)); zdev.dd.d_dev = &zfs_dev; - dev = *(struct disk_devdesc *)&zdev; - init_zfs_bootenv(zfs_fmtdev(&dev)); + init_zfs_bootenv(zfs_fmtdev(&zdev)); + dd = &zdev.dd; } else #endif @@ -185,14 +184,16 @@ extract_currdev(void) dev.d_slice = -1; dev.d_partition = -1; } + dd = &dev.dd; } else { dev.dd.d_dev = &host_dev; dev.dd.d_unit = 0; + dd = &dev.dd; } - env_setenv("currdev", EV_VOLATILE, userboot_fmtdev(&dev), + env_setenv("currdev", EV_VOLATILE, userboot_fmtdev(dd), userboot_setcurrdev, env_nounset); - env_setenv("loaddev", EV_VOLATILE, userboot_fmtdev(&dev), + env_setenv("loaddev", EV_VOLATILE, userboot_fmtdev(dd), env_noset, env_nounset); }