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