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