/* $NetBSD: zfs.c,v 1.1 2018/01/09 03:31:15 christos Exp $ */ /*- * Copyright (c) 2017 The NetBSD Foundation, Inc. * Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org> * Copyright (c) 2015 Xin LI <delphij@FreeBSD.org> * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Tomohiro Kusumi <kusumi.tomohiro@gmail.com>. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __RCSID("$NetBSD: zfs.c,v 1.1 2018/01/09 03:31:15 christos Exp $"); #include <sys/types.h> #include <cddl/osnet/sys/sys/types.h> #include <sys/time.h> #include <cddl/osnet/sys/sys/time.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <libnvpair.h> #include <sys/vdev_impl.h> #include "fstyp.h" int fstyp_zfs(FILE *fp, char *label, size_t labelsize) { vdev_label_t *vdev_label = NULL; vdev_phys_t *vdev_phys; char *zpool_name = NULL; nvlist_t *config = NULL; int err = 0; /* * Read in the first ZFS vdev label ("L0"), located at the beginning * of the vdev and extract the pool name from it. * * TODO: the checksum of label should be validated. */ vdev_label = (vdev_label_t *)read_buf(fp, 0, sizeof(*vdev_label)); if (vdev_label == NULL) return 1; vdev_phys = &(vdev_label->vl_vdev_phys); if ((nvlist_unpack(vdev_phys->vp_nvlist, sizeof(vdev_phys->vp_nvlist), &config, 0)) == 0 && (nvlist_lookup_string(config, "name", &zpool_name) == 0)) { strlcpy(label, zpool_name, labelsize); } else err = 1; nvlist_free(config); free(vdev_label); return err; } |