118 lines
3.3 KiB
C
118 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/diskpc98.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 "mkimg.h"
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#include "scheme.h"
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#define PC98_BOOTCODESZ 8192
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static struct mkimg_alias pc98_aliases[] = {
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{ ALIAS_FREEBSD, ALIAS_INT2TYPE(PC98_PTYP_386BSD) },
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{ ALIAS_NONE, 0 }
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};
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static u_int
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pc98_metadata(u_int where)
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{
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u_int secs;
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secs = PC98_BOOTCODESZ / secsz;
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return ((where == SCHEME_META_IMG_START) ? secs : 0);
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}
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static void
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pc98_chs(u_short *cyl, u_char *hd, u_char *sec, uint32_t lba __unused)
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{
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*cyl = 0xffff; /* 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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pc98_write(int fd, lba_t imgsz __unused, void *bootcode)
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{
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struct part *part;
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struct pc98_partition *dpbase, *dp;
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u_char *buf;
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int error, ptyp;
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buf = malloc(PC98_BOOTCODESZ);
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if (buf == NULL)
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return (ENOMEM);
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if (bootcode != NULL) {
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memcpy(buf, bootcode, PC98_BOOTCODESZ);
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memset(buf + secsz, 0, secsz);
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} else
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memset(buf, 0, PC98_BOOTCODESZ);
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le16enc(buf + PC98_MAGICOFS, PC98_MAGIC);
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dpbase = (void *)(buf + secsz);
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STAILQ_FOREACH(part, &partlist, link) {
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dp = dpbase + part->index;
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ptyp = ALIAS_TYPE2INT(part->type);
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dp->dp_mid = ptyp;
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dp->dp_sid = ptyp >> 8;
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pc98_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect,
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part->block);
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pc98_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect,
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part->block + part->size - 1);
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if (part->label != NULL)
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memcpy(dp->dp_name, part->label, strlen(part->label));
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}
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error = mkimg_seek(fd, 0);
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if (error == 0) {
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if (write(fd, buf, PC98_BOOTCODESZ) != PC98_BOOTCODESZ)
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error = errno;
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}
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free(buf);
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return (error);
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}
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static struct mkimg_scheme pc98_scheme = {
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.name = "pc98",
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.description = "PC-9800 disk partitions",
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.aliases = pc98_aliases,
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.metadata = pc98_metadata,
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.write = pc98_write,
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.bootcode = PC98_BOOTCODESZ,
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.labellen = 16,
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.nparts = PC98_NPARTS,
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.maxsecsz = 512
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};
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SCHEME_DEFINE(pc98_scheme);
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