freebsd-dev/usr.bin/mkimg/bsd.c
Marcel Moolenaar 4299711473 o Provide a private definition for UUIDs (mkimg_uuid_t) because
UUIDs are not portable.
 o  Move mkimg_uuid() to a new file and merge both gpt_uuid_enc()
    and vhd_uuid_enc() into a single mkimg_uuid_enc() that lives
    in the same file.
 o  Move the OS-specific implementation of generating a UUID to
    osdep_uuidgen() and provide the implementations for FreeBSD,
    macOS and Linux.
 o  Expect the partitioning scheme headers to be found by having
    a search to the directory in which the headers live. This
    avoids conflicts on non-FreeBSD machines.
2016-10-18 01:55:07 +00:00

137 lines
4.0 KiB
C

/*-
* Copyright (c) 2014 Juniper Networks, Inc.
* 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 AUTHOR 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 AUTHOR 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/errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <bsd.h>
#include "endian.h"
#include "image.h"
#include "mkimg.h"
#include "scheme.h"
static struct mkimg_alias bsd_aliases[] = {
{ ALIAS_FREEBSD_NANDFS, ALIAS_INT2TYPE(FS_NANDFS) },
{ ALIAS_FREEBSD_SWAP, ALIAS_INT2TYPE(FS_SWAP) },
{ ALIAS_FREEBSD_UFS, ALIAS_INT2TYPE(FS_BSDFFS) },
{ ALIAS_FREEBSD_VINUM, ALIAS_INT2TYPE(FS_VINUM) },
{ ALIAS_FREEBSD_ZFS, ALIAS_INT2TYPE(FS_ZFS) },
{ ALIAS_NONE, 0 }
};
static lba_t
bsd_metadata(u_int where, lba_t blk)
{
if (where == SCHEME_META_IMG_START)
blk += BSD_BOOTBLOCK_SIZE / secsz;
else if (where == SCHEME_META_IMG_END)
blk = round_cylinder(blk);
else
blk = round_block(blk);
return (blk);
}
static int
bsd_write(lba_t imgsz, void *bootcode)
{
u_char *buf, *p;
struct disklabel *d;
struct partition *dp;
struct part *part;
int bsdparts, error, n;
uint16_t checksum;
buf = malloc(BSD_BOOTBLOCK_SIZE);
if (buf == NULL)
return (ENOMEM);
if (bootcode != NULL) {
memcpy(buf, bootcode, BSD_BOOTBLOCK_SIZE);
memset(buf + secsz, 0, sizeof(struct disklabel));
} else
memset(buf, 0, BSD_BOOTBLOCK_SIZE);
bsdparts = nparts + 1; /* Account for c partition */
if (bsdparts < BSD_NPARTS_MIN)
bsdparts = BSD_NPARTS_MIN;
d = (void *)(buf + secsz);
le32enc(&d->d_magic, BSD_MAGIC);
le32enc(&d->d_secsize, secsz);
le32enc(&d->d_nsectors, nsecs);
le32enc(&d->d_ntracks, nheads);
le32enc(&d->d_ncylinders, ncyls);
le32enc(&d->d_secpercyl, nsecs * nheads);
le32enc(&d->d_secperunit, imgsz);
le16enc(&d->d_rpm, 3600);
le32enc(&d->d_magic2, BSD_MAGIC);
le16enc(&d->d_npartitions, bsdparts);
le32enc(&d->d_bbsize, BSD_BOOTBLOCK_SIZE);
dp = &d->d_partitions[BSD_PART_RAW];
le32enc(&dp->p_size, imgsz);
TAILQ_FOREACH(part, &partlist, link) {
n = part->index + ((part->index >= BSD_PART_RAW) ? 1 : 0);
dp = &d->d_partitions[n];
le32enc(&dp->p_size, part->size);
le32enc(&dp->p_offset, part->block);
le32enc(&dp->p_fsize, 0);
dp->p_fstype = ALIAS_TYPE2INT(part->type);
dp->p_frag = 0;
le16enc(&dp->p_cpg, 0);
}
dp = &d->d_partitions[bsdparts];
checksum = 0;
for (p = (void *)d; p < (u_char *)dp; p += 2)
checksum ^= le16dec(p);
le16enc(&d->d_checksum, checksum);
error = image_write(0, buf, BSD_BOOTBLOCK_SIZE / secsz);
free(buf);
return (error);
}
static struct mkimg_scheme bsd_scheme = {
.name = "bsd",
.description = "BSD disk label",
.aliases = bsd_aliases,
.metadata = bsd_metadata,
.write = bsd_write,
.nparts = BSD_NPARTS_MAX - 1,
.bootcode = BSD_BOOTBLOCK_SIZE,
.maxsecsz = 512
};
SCHEME_DEFINE(bsd_scheme);