1/* $NetBSD: zfs.c,v 1.1 2018/01/09 03:31:15 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2017 The NetBSD Foundation, Inc. 5 * Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org> 6 * Copyright (c) 2015 Xin LI <delphij@FreeBSD.org> 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Tomohiro Kusumi <kusumi.tomohiro@gmail.com>. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33#include <sys/cdefs.h> 34__RCSID("$NetBSD: zfs.c,v 1.1 2018/01/09 03:31:15 christos Exp $"); 35 36#include <sys/types.h> 37#include <cddl/osnet/sys/sys/types.h> 38#include <sys/time.h> 39#include <cddl/osnet/sys/sys/time.h> 40#include <stdint.h> 41#include <stdio.h> 42#include <stdlib.h> 43#include <string.h> 44#include <unistd.h> 45 46#include <libnvpair.h> 47#include <sys/vdev_impl.h> 48 49#include "fstyp.h" 50 51int 52fstyp_zfs(FILE *fp, char *label, size_t labelsize) 53{ 54 vdev_label_t *vdev_label = NULL; 55 vdev_phys_t *vdev_phys; 56 char *zpool_name = NULL; 57 nvlist_t *config = NULL; 58 int err = 0; 59 60 /* 61 * Read in the first ZFS vdev label ("L0"), located at the beginning 62 * of the vdev and extract the pool name from it. 63 * 64 * TODO: the checksum of label should be validated. 65 */ 66 vdev_label = (vdev_label_t *)read_buf(fp, 0, sizeof(*vdev_label)); 67 if (vdev_label == NULL) 68 return 1; 69 70 vdev_phys = &(vdev_label->vl_vdev_phys); 71 72 if ((nvlist_unpack(vdev_phys->vp_nvlist, sizeof(vdev_phys->vp_nvlist), 73 &config, 0)) == 0 && 74 (nvlist_lookup_string(config, "name", &zpool_name) == 0)) { 75 strlcpy(label, zpool_name, labelsize); 76 } else 77 err = 1; 78 79 nvlist_free(config); 80 free(vdev_label); 81 82 return err; 83} 84