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114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*-
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* Copyright (c) 2014 Juniper Networks, Inc.
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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 AUTHOR 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 AUTHOR 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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__FBSDID("$FreeBSD$");
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#include <sys/errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <vtoc.h>
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#include "endian.h"
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#include "image.h"
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#include "mkimg.h"
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#include "scheme.h"
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static struct mkimg_alias vtoc8_aliases[] = {
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{ ALIAS_FREEBSD_NANDFS, ALIAS_INT2TYPE(VTOC_TAG_FREEBSD_NANDFS) },
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{ ALIAS_FREEBSD_SWAP, ALIAS_INT2TYPE(VTOC_TAG_FREEBSD_SWAP) },
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{ ALIAS_FREEBSD_UFS, ALIAS_INT2TYPE(VTOC_TAG_FREEBSD_UFS) },
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{ ALIAS_FREEBSD_VINUM, ALIAS_INT2TYPE(VTOC_TAG_FREEBSD_VINUM) },
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{ ALIAS_FREEBSD_ZFS, ALIAS_INT2TYPE(VTOC_TAG_FREEBSD_NANDFS) },
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{ ALIAS_NONE, 0 }
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};
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static lba_t
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vtoc8_metadata(u_int where, lba_t blk)
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{
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blk += (where == SCHEME_META_IMG_START) ? 1 : 0;
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return (round_cylinder(blk));
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}
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static int
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vtoc8_write(lba_t imgsz, void *bootcode __unused)
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{
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struct vtoc8 vtoc8;
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struct part *part;
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u_char *p;
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int error, n;
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uint16_t ofs, sum;
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imgsz = (lba_t)ncyls * nheads * nsecs;
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memset(&vtoc8, 0, sizeof(vtoc8));
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sprintf(vtoc8.ascii, "FreeBSD%lldM",
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(long long)(imgsz * secsz / 1048576));
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be32enc(&vtoc8.version, VTOC_VERSION);
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be16enc(&vtoc8.nparts, VTOC8_NPARTS);
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be32enc(&vtoc8.sanity, VTOC_SANITY);
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be16enc(&vtoc8.rpm, 3600);
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be16enc(&vtoc8.physcyls, ncyls);
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be16enc(&vtoc8.ncyls, ncyls);
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be16enc(&vtoc8.altcyls, 0);
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be16enc(&vtoc8.nheads, nheads);
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be16enc(&vtoc8.nsecs, nsecs);
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be16enc(&vtoc8.magic, VTOC_MAGIC);
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be32enc(&vtoc8.map[VTOC_RAW_PART].nblks, imgsz);
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TAILQ_FOREACH(part, &partlist, link) {
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n = part->index + ((part->index >= VTOC_RAW_PART) ? 1 : 0);
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be16enc(&vtoc8.part[n].tag, ALIAS_TYPE2INT(part->type));
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be32enc(&vtoc8.map[n].cyl, part->block / (nsecs * nheads));
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be32enc(&vtoc8.map[n].nblks, part->size);
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}
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/* Calculate checksum. */
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sum = 0;
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p = (void *)&vtoc8;
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for (ofs = 0; ofs < sizeof(vtoc8) - 2; ofs += 2)
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sum ^= be16dec(p + ofs);
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be16enc(&vtoc8.cksum, sum);
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error = image_write(0, &vtoc8, 1);
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return (error);
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}
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static struct mkimg_scheme vtoc8_scheme = {
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.name = "vtoc8",
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.description = "SMI VTOC8 disk labels",
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.aliases = vtoc8_aliases,
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.metadata = vtoc8_metadata,
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.write = vtoc8_write,
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.nparts = VTOC8_NPARTS - 1,
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.maxsecsz = 512
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};
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SCHEME_DEFINE(vtoc8_scheme);
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