diff options
Diffstat (limited to 'usr.bin/mkimg/bsd.c')
| -rw-r--r-- | usr.bin/mkimg/bsd.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/usr.bin/mkimg/bsd.c b/usr.bin/mkimg/bsd.c new file mode 100644 index 0000000..7267a56 --- /dev/null +++ b/usr.bin/mkimg/bsd.c @@ -0,0 +1,130 @@ +/*- + * 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/types.h> +#include <sys/disklabel.h> +#include <sys/endian.h> +#include <sys/errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.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 u_int +bsd_metadata(u_int where) +{ + u_int secs; + + secs = BBSIZE / secsz; + return ((where == SCHEME_META_IMG_START) ? secs : 0); +} + +static int +bsd_write(int fd, lba_t imgsz, void *bootcode) +{ + u_char *buf, *p; + struct disklabel *d; + struct partition *dp; + struct part *part; + int error, n; + uint16_t checksum; + + buf = malloc(BBSIZE); + if (buf == NULL) + return (ENOMEM); + if (bootcode != NULL) { + memcpy(buf, bootcode, BBSIZE); + memset(buf + secsz, 0, secsz); + } else + memset(buf, 0, BBSIZE); + + imgsz = ncyls * nheads * nsecs; + ftruncate(fd, imgsz * secsz); + + d = (void *)(buf + secsz); + le32enc(&d->d_magic, DISKMAGIC); + 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, DISKMAGIC); + le16enc(&d->d_npartitions, (8 > nparts + 1) ? 8 : nparts + 1); + le32enc(&d->d_bbsize, BBSIZE); + + dp = &d->d_partitions[RAW_PART]; + le32enc(&dp->p_size, imgsz); + STAILQ_FOREACH(part, &partlist, link) { + n = part->index + ((part->index >= RAW_PART) ? 1 : 0); + dp = &d->d_partitions[n]; + le32enc(&dp->p_size, part->size); + le32enc(&dp->p_offset, part->block); + dp->p_fstype = ALIAS_TYPE2INT(part->type); + } + + dp = &d->d_partitions[nparts + 1]; + checksum = 0; + for (p = buf; p < (u_char *)dp; p += 2) + checksum ^= le16dec(p); + le16enc(&d->d_checksum, checksum); + + error = mkimg_seek(fd, 0); + if (error == 0) { + if (write(fd, buf, BBSIZE) != BBSIZE) + error = errno; + } + 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 = 19, + .bootcode = BBSIZE, + .maxsecsz = 512 +}; + +SCHEME_DEFINE(bsd_scheme); |
