1e7c9712cd
Add support for different output formats: 1. The output file that was previously written is now called the raw format. 2. Add the vmdk output format to create VMDK images. When the format is not given, the raw output format is assumed.
117 lines
3.3 KiB
C
117 lines
3.3 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/types.h>
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#include <sys/diskmbr.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.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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#ifndef DOSPTYP_FAT32
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#define DOSPTYP_FAT32 0x0b
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#endif
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static struct mkimg_alias mbr_aliases[] = {
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{ ALIAS_EBR, ALIAS_INT2TYPE(DOSPTYP_EXT) },
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{ ALIAS_FAT32, ALIAS_INT2TYPE(DOSPTYP_FAT32) },
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{ ALIAS_FREEBSD, ALIAS_INT2TYPE(DOSPTYP_386BSD) },
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{ ALIAS_NONE, 0 } /* Keep last! */
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};
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static u_int
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mbr_metadata(u_int where)
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{
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u_int secs;
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secs = (where == SCHEME_META_IMG_START) ? nsecs : 0;
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return (secs);
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}
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static void
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mbr_chs(u_char *cyl, u_char *hd, u_char *sec, uint32_t lba __unused)
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{
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*cyl = 0xff; /* XXX */
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*hd = 0xff; /* XXX */
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*sec = 0xff; /* XXX */
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}
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static int
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mbr_write(lba_t imgsz __unused, void *bootcode)
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{
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u_char *mbr;
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struct dos_partition *dpbase, *dp;
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struct part *part;
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int error;
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mbr = malloc(secsz);
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if (mbr == NULL)
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return (ENOMEM);
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if (bootcode != NULL) {
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memcpy(mbr, bootcode, DOSPARTOFF);
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memset(mbr + DOSPARTOFF, 0, secsz - DOSPARTOFF);
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} else
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memset(mbr, 0, secsz);
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le16enc(mbr + DOSMAGICOFFSET, DOSMAGIC);
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dpbase = (void *)(mbr + DOSPARTOFF);
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STAILQ_FOREACH(part, &partlist, link) {
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dp = dpbase + part->index;
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dp->dp_flag = (part->index == 0 && bootcode != NULL) ? 0x80 : 0;
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mbr_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect,
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part->block);
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dp->dp_typ = ALIAS_TYPE2INT(part->type);
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mbr_chs(&dp->dp_ecyl, &dp->dp_ehd, &dp->dp_esect,
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part->block + part->size - 1);
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le32enc(&dp->dp_start, part->block);
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le32enc(&dp->dp_size, part->size);
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}
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error = image_write(0, mbr, 1);
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free(mbr);
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return (error);
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}
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static struct mkimg_scheme mbr_scheme = {
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.name = "mbr",
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.description = "Master Boot Record",
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.aliases = mbr_aliases,
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.metadata = mbr_metadata,
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.write = mbr_write,
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.bootcode = 512,
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.nparts = NDOSPART,
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.maxsecsz = 4096
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};
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SCHEME_DEFINE(mbr_scheme);
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