diff options
Diffstat (limited to 'usr.bin/mkimg/bsd.c')
| -rw-r--r-- | usr.bin/mkimg/bsd.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/usr.bin/mkimg/bsd.c b/usr.bin/mkimg/bsd.c new file mode 100644 index 000000000000..17933c01ac07 --- /dev/null +++ b/usr.bin/mkimg/bsd.c @@ -0,0 +1,133 @@ +/*- + * 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> +#include <sys/errno.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.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); |