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
fstyp_geli(FILE * fp,char * label __unused,size_t labelsize __unused)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