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