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