1 /*- 2 * Copyright (c) 2017 The DragonFly Project 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 <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include <err.h> 34 #include <vfs/hammer2/hammer2_disk.h> 35 36 #include "fstyp.h" 37 38 static hammer2_volume_data_t* 39 __read_voldata(FILE *fp) 40 { 41 hammer2_volume_data_t *voldata; 42 43 voldata = read_buf(fp, 0, sizeof(*voldata)); 44 if (voldata == NULL) 45 err(1, "failed to read volume data"); 46 47 return (voldata); 48 } 49 50 static int 51 __test_voldata(const hammer2_volume_data_t *voldata) 52 { 53 if (voldata->magic != HAMMER2_VOLUME_ID_HBO && 54 voldata->magic != HAMMER2_VOLUME_ID_ABO) 55 return (1); 56 57 return (0); 58 } 59 60 int 61 fstyp_hammer2(FILE *fp, char *label, size_t size) 62 { 63 hammer2_volume_data_t *voldata; 64 int error = 1; 65 66 voldata = __read_voldata(fp); 67 if (__test_voldata(voldata)) 68 goto done; 69 70 // XXX -l option not supported yet 71 //strlcpy(label, "label", size); 72 73 error = 0; 74 done: 75 free(voldata); 76 return (error); 77 } 78