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