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 #include <sys/disk.h> 29 #include <sys/types.h> 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 34 #include <geom/eli/g_eli.h> 35 36 #include "fstyp.h" 37 38 int 39 fstyp_geli(FILE *fp, char *label __unused, size_t labelsize __unused) 40 { 41 int error; 42 off_t mediasize; 43 u_int sectorsize; 44 struct g_eli_metadata md; 45 u_char *buf; 46 47 error = ioctl(fileno(fp), DIOCGMEDIASIZE, &mediasize); 48 if (error != 0) 49 return (1); 50 error = ioctl(fileno(fp), DIOCGSECTORSIZE, §orsize); 51 if (error != 0) 52 return (1); 53 buf = (u_char *)read_buf(fp, mediasize - sectorsize, sectorsize); 54 if (buf == NULL) 55 goto gelierr; 56 error = eli_metadata_decode(buf, &md); 57 if (error) 58 goto gelierr; 59 60 if (strcmp(md.md_magic, G_ELI_MAGIC) == 0) { 61 free(buf); 62 return (0); 63 } 64 65 gelierr: 66 free(buf); 67 68 return (1); 69 } 70