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/disk.h> 34 #include <sys/types.h> 35 #include <stdint.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 #include <geom/eli/g_eli.h> 42 43 #include "fstyp.h" 44 45 int 46 fstyp_geli(FILE *fp, char *label __unused, size_t labelsize __unused) 47 { 48 int error; 49 off_t mediasize; 50 u_int sectorsize; 51 struct g_eli_metadata md; 52 u_char *buf; 53 54 error = ioctl(fileno(fp), DIOCGMEDIASIZE, &mediasize); 55 if (error != 0) 56 return (1); 57 error = ioctl(fileno(fp), DIOCGSECTORSIZE, §orsize); 58 if (error != 0) 59 return (1); 60 buf = (u_char *)read_buf(fp, mediasize - sectorsize, sectorsize); 61 if (buf == NULL) 62 goto gelierr; 63 error = eli_metadata_decode(buf, &md); 64 if (error) 65 goto gelierr; 66 67 if (strncmp(md.md_magic, "GEOM::ELI", 9) == 0) { 68 free(buf); 69 return (0); 70 } 71 72 gelierr: 73 free(buf); 74 75 return (1); 76 } 77