/*-
* Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/disk.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <geom/eli/g_eli.h>
#include "fstyp.h"
int
fstyp_geli(FILE *fp, char *label __unused, size_t labelsize __unused)
{
int error;
off_t mediasize;
u_int sectorsize;
struct g_eli_metadata md;
u_char *buf;
error = ioctl(fileno(fp), DIOCGMEDIASIZE, &mediasize);
if (error != 0)
return (1);
error = ioctl(fileno(fp), DIOCGSECTORSIZE, §orsize);
if (error != 0)
return (1);
buf = (u_char *)read_buf(fp, mediasize - sectorsize, sectorsize);
if (buf == NULL)
goto gelierr;
error = eli_metadata_decode(buf, &md);
if (error)
goto gelierr;
if (strcmp(md.md_magic, G_ELI_MAGIC) == 0) {
free(buf);
return (0);
}
gelierr:
free(buf);
return (1);
}
